Top 20 Granny Flat Builders In Sydney, New South Wales 2026

Sydney homeowners can choose from granny flat builders that offer custom designs, fixed plans, approval support and full construction services. Builders such as ARK Granny Flats, Granny Flat Solutions, 5 Star Granny Flats, Master Granny Flats and Granny Flats Australia provide options for family accommodation, accessible living and rental use. Homeowners should compare builder experience, inclusions, warranties, approval support, construction time and total project costs before choosing a provider.

Written by: Granny flat Team

A professionally planned granny flat can give Sydney homeowners more options for using their property. Granny Flat provides building solutions for people looking for granny flat builders in New South Wales, with designs suited to a variety of family and lifestyle needs.

Creating the right secondary living space involves balancing privacy, functionality and available room. By planning around the existing property and intended occupants, homeowners can develop a granny flat that provides comfortable accommodation without feeling disconnected from the main home.

ARK Granny Flats 

ARK Granny Flats specialises in providing extra living space on established properties in New South Wales without purchasing a new home. Their granny flats offer a versatile solution for additional living space, which can accommodate children and elderly parents or even serve as a secondary income source. The company provides an array of affordable and established granny flat plans, with options for custom designs through consultations with designers, draftsmen, and architects. Their focus is on delivering high-quality construction and finishes in a cost-effective and hassle-free manner, ensuring client needs are met at each stage of the development process.

ARK Granny Flats’ services extend beyond the construction of granny flats. They also provide services for new home builds, duplex builds, renovations and additions, subdivisions, drafting and design services, and concrete and formwork. Additionally, they offer guidance on various home improvement ideas, including bathroom, bedroom, and kitchen ideas and product recommendations. The company caters to all areas of Sydney and most regions across New South Wales.

Services Offered:

  • Granny Flats Construction
  • New Homes Builds
  • Duplex Builds
  • Renovations & Additions
  • Subdivisions
  • Drafting & Design Services
  • Concrete & Formwork
  • Bathroom, Bedroom & Kitchen Ideas

Phone: 0449 637 343
Website: https://grannyflatbuilder.sydney/ 

RB Sydney Builders

RB Sydney Builders is one of Australia’s oldest and most reputable construction companies. It specialises in a wide range of residential building services, focusing on renovations, granny flats, new homes, and extensions. 

The company is known for delivering high-quality projects with exceptional customer satisfaction. They pride themselves on offering a personalised approach, from competitive quoting to project completion, and ensure that all tradespeople involved are skilled, punctual, and respectful of your property.

Services Offered:

  • Residential Renovations: Enhance the look and functionality of your home with professional renovations.
  • Home Extensions: Expand your living space through thoughtfully crafted home extensions.
  • Luxury Homes: Build your dream home with RB Sydney Builders, known for high-end custom designs.
  • Granny Flats: Add versatile living spaces with expertly built granny flats for extra accommodation or rental income.

The company values transparency and communication, focusing on keeping customers informed every step of the way. Client reviews reflect its commitment to quality, timeliness, and professionalism.

Phone: 0413128470
Email: rb_sydneybuilders@hotmail.com
Website: https://www.rbsb.com.au/ 

Acrow Granny Flats

Acrow Granny Flats is a leading builder of granny flats, home extensions, and small homes servicing the Central Coast, Newcastle, Hunter Valley, and Canberra regions. With over 20 years of experience, Acrow offers comprehensive services for homeowners looking to build a granny flat or home extension. They provide free consultations, site inspections, and custom design options, ensuring that each project is tailored to the individual needs of the client. 

Acrow’s process includes consultation, approvals, construction, and long-term relationship management to make the experience as stress-free and enjoyable as possible. They are known for their high-quality craftsmanship and on-time delivery, even during supply chain disruptions and economic challenges.

Services Offered:

  • Granny flats (1 and 2-bedroom units)
  • Home extensions
  • Small homes and duplexes
  • Customisable granny flat designs
  • Free consultation and site inspection
  • Full approval handling and council liaison
  • Construction of high-quality, affordable granny flats
  • Virtual tours and display home visits
  • Professional after-build support

Phone: (02) 4308 7854
Email: info@acrowgrannyflats.com.au
Website: https://acrowgrannyflats.com.au/ 

Granny Flat Solutions

Granny Flat Solutions is a highly renowned and award-winning company specialising in designing and constructing granny flats in Greater Sydney, Newcastle, and the Illawarra regions. With over 40 years of experience in the industry, they offer a wide range of granny flats, including custom designs, eco-friendly options, and accessible homes for those with special needs. They focus on high-quality craftsmanship and provide solutions that cater to different living needs, such as multi-generational families, disability, and elderly care. Granny Flat Solutions has won numerous awards for design and construction excellence, with a strong emphasis on customer satisfaction.

The company offers a comprehensive process from site checks and design to approvals and construction. It also provides various display homes and open house events, allowing potential customers to see its work firsthand. In addition to its standard offerings, Granny Flat Solutions offers financial benefits such as increased property value and passive income. The team at Granny Flat Solutions is known for its attention to detail, professionalism, and commitment to exceeding customer expectations.

Services Offered:

  • Custom granny flat designs
  • 1, 2, 3, and 4-bedroom granny flats
  • Eco-friendly and smart home options
  • Accessible designs for elderly and disabled living
  • Fast construction turnarounds (26 weeks)
  • Site inspections and free quotes
  • In-house project management and customer support

Phone: 1300 160 320
Email: info@grannyflatsolutions.com.au
Website: https://grannyflatsolutions.com.au/ 

5 Star Granny Flats

5 Star Granny Flats is Sydney’s leading granny flat builder and designer. The company offers specialised services, such as building custom-designed granny flats that suit various customer needs. With a team of experienced professionals, they ensure high-quality, affordable solutions for all their clients. 

The company promises seamless service and excellent results. It also has a quick turnaround time, often completing builds within four months. Their offerings cater to different budgets, featuring designs such as one-bedroom, two-bedroom, three-bedroom, and studio granny flats. The team also advises on design, budget, materials, and final construction.

Services Offered:

  • Custom-built 1-bedroom, 2-bedroom, 3-bedroom granny flats, and studio designs
  • Full project management from council approvals to final inspections
  • Transparent pricing and budget advice
  • 6-year structural warranty for all builds
  • Floor-to-ceiling tiled bathrooms, soft-closing cabinets, and energy-efficient designs
  • Separate electricity meters and water sub-metering
  • Free site visits and design consultations
  • Services across Sydney, Central Coast, and Lake Macquarie

Phone: 1300 843 921
Email: info@5stargrannyflats.com.au
Website: https://5stargrannyflats.com.au/ 

Master Granny Flats

Master Granny Flats specialises in custom-designed granny flats across Sydney and the Wollongong regions. Their offerings include a full-service process from design and approval to construction, catering to all your needs with professional service and top-quality craftsmanship. 

They also provide free, no-obligation on-site inspections and quotes, with options for virtual tours. Customers can book showroom visits or request the company’s master guide for more details. The company has multiple locations in New South Wales and is renowned for its excellent customer service and attention to detail, ensuring smooth project completion.

Services Offered:

  • Custom Granny Flat Design: Tailored designs to suit various property types.
  • Approval and Permitting: Assistance with navigating local building codes and regulations.
  • Construction Services: We provide full construction services for granny flats from start to finish.
  • Free On-Site Inspections and Quotes: No-obligation site assessments for accurate pricing and planning.
  • Virtual Tours and Showrooms: Online and in-person tours will showcase completed granny flats.
  • Floor Plans and 3D Walkthroughs: Visualising plans and designs for better decision-making.
  • Completed Projects: Showcasing previously completed granny flats to give potential clients a clear understanding of the final product.

Phone: 1300 643 528
Email: Enquiries@mastergrannyflats.com.au
Website: https://www.mastergrannyflats.com.au/ 

Granny Flats Sydney

Granny Flat Sydney is a reputable and professional builder of high-quality granny flats in Sydney. It offers both pre-designed and custom floor plans tailored to clients’ needs. With over 100 designs available, including one-, two-, and three-bedroom options, the company ensures a wide range of choices to match any lifestyle, budget, and block size. 

They use quality materials and craftsmanship, ensuring each granny flat is built to the highest standards. Their services include design selection, in-house customisation, and expert guidance through every stage of construction. Granny Flat Sydney also offers free on-site assessments and consultations with a transparent and customer-focused approach.

Services Offered:

  • Granny Flats Construction: Customised designs and construction.
  • Design Options: Over 100 floor plans are available or custom-made to suit your needs.
  • Free Quote and Introductory Call: Quick response and free assessment.
  • In-House Design Team: Professional designs tailored to your specifications.
  • Compliance and Approvals: Assistance with the approval and building appraisal process.
  • Investment Opportunities: Profitable granny flat investment options.
  • Quality Construction: Use of high-quality materials and craftsmanship.

Phone: 1300 06 06 51
Email: info@grannyflatsydney.com.au
Website: https://www.grannyflatsydney.com.au/ 

Granny Flat Approvals

Granny Flats Sydney offers a comprehensive service for designing, approving, and constructing granny flats throughout Sydney and rural NSW. They specialise in providing transparent and affordable turn-key building packages, ensuring customers receive a clear breakdown of costs, including site costs. Their services cater to various needs, including a backyard cabin, garage conversion, or custom granny flat design. The company guarantees fast approvals with their 100% money-back guarantee on NSW State SEPP Approvals. Their team has over 15 years of experience building high-quality granny flats and offers personalised services for each project, from design to completion.

Their services include flexible design options that fit perfectly into any backyard, comprehensive project management, and advice on property suitability for granny flats. Granny Flats Sydney uses a straightforward approach, bypassing middlemen to directly provide design, approval, and construction services, helping clients save money. Their website also features a range of free guides, news on legislation and design principles, and an online approval guide for those interested in the process. Customers can take advantage of the company’s expertise by using their online calculators for pricing and exploring available granny flat designs.

Services Offered:

  • Design Services: Customisable granny flat plans tailored to fit your backyard.
  • Turn-Key Building Packages: These transparent, fixed-price building packages include all costs (site, construction, and more).
  • Fast Approvals: Guaranteed approvals with a 100% money-back guarantee on NSW State SEPP approvals.
  • Site Appraisals: Comprehensive site surveys to assess the feasibility of a granny flat build.
  • Consultations: Expert advice on design, approvals, and maximising space in your backyard.
  • Online Pricing Calculators: Tools for estimating build and approval costs.
  • Granny Flat News & Guides: Free resources for navigating approval legislation and construction tips.

Phone: 1300 205 007
Email: sales@grannyflatapprovals.com.au
Website: https://www.grannyflatapprovals.com.au/ 

Granny Flats Australia

Granny Flats Australia is an established leader in granny flat construction, and it has been operating since 2009. The company is dedicated to providing quality, customised granny flat solutions, handling all aspects of the building process from design to construction and council approvals. Their services include various designs and floor plans, which can be customised based on client preferences. 

Granny Flats Australia prides itself on delivering luxury inclusions, quality construction, and a seamless building experience. It also offers virtual tours of its display homes and a free quote and site plan for potential clients.

Services Offered:

  • Custom design and construction of granny flats
  • Over 50 floor plan options, including 1, 2, and 3-bedroom designs
  • Luxury inclusions and customisable floor plans
  • Virtual tours and display homes
  • Free quotes and site plans
  • Full project management, including council approvals
  • Hassle-free construction and timely delivery

Phone: (02) 9899 9146
Email: inspections@grannyflatsaustralia.com.au
Website: https://grannyflatsaustralia.com.au/ 

Granny Flats X

Granny Flats X is a Sydney-based builder offering high-quality, affordable granny flat solutions. With over 38 years of industry experience, the company prides itself on delivering exceptional designs and building services for granny flats. They focus on providing custom-built granny flats that cater to clients’ needs while maintaining competitive pricing. 

The company offers a range of design options, including studio, one-bedroom, two-bedroom, and three-bedroom layouts. It ensures that each project is completed quickly and efficiently, with an average construction time of 16 weeks.

Services Offered:

  • Custom Granny Flat Designs: Options for studio, 1-bedroom, 2-bedroom, and 3-bedroom layouts, including the ability to fully personalise floor plans.
  • Price Beat Guarantee: Granny Flats X promises to beat any competitor’s price for your dream granny flat.
  • Fast Construction: Completion in as little as 16 weeks.
  • Industry Best Inclusions: High-quality materials and standards are included at competitive prices.
  • Certified and Experienced Builders: 38 years of experience in building granny flats.
  • Flexible Service: Family-owned business focused on customer satisfaction with a 100% money-back guarantee.
  • Showroom: Customers can go to their Luddenham location in person.

Phone: 1300 950 764
Email: info@grannyflatsx.com.au
Website: https://grannyflatsx.com.au/ 

Granny Flat Experts

The Granny Flat Experts specialise in designing, building, and constructing granny flats throughout Sydney. Focusing on maximising property value and providing housing solutions for families, they offer a comprehensive service from design to completion. 

Whether you’re looking to accommodate aging relatives or adult children or generate rental income, their team ensures the process is straightforward and professionally handled. They provide custom designs that suit various property types, guiding clients through approval processes and construction while maintaining high-quality standards.

Services Offered:

  • Custom Design: Tailored granny flat designs to suit various property types.
  • Construction & Building: Full-service construction for standalone, semi-detached, duplex, or townhouse granny flats.
  • Approval Assistance: Guidance on obtaining the necessary approvals and permits.
  • Planning & Consultation: Expert advice on site conditions, planning requirements, and financing options.
  • Completed Projects: Showcase of past successful projects for inspiration.
  • Granny Flat Consultation: Personalised consultations and quotes.
  • Open Homes: Opportunities to visit completed granny flats for a first-hand look at the design and functionality.

Phone: 02 9863 2854
Email: info@thegrannyflatexperts.com.au
Website: https://www.thegrannyflatexperts.com.au/ 

Granny Flats Design

Granny Flats Design is a leading construction company specialising in the design and building of granny flats in Sydney, NSW. With over 20 years of industry experience, they offer standard and custom-built granny flats tailored to clients’ needs. 

The company emphasises quality, affordability, and versatility in its designs, which range from 1- to 4-bedroom layouts, including studio designs and pool houses. Its services cover everything from the initial concept and design phase to obtaining council approvals and final construction.

Services Offered:

  • Custom-designed granny flats tailored to specific needs
  • 1, 2, 3, and 4-bedroom granny flats
  • Studio design granny flats
  • Poolhouse granny flats
  • Detached new home and granny flat designs
  • Narrow block granny flat designs
  • Renovations, extensions, and alterations
  • Free quotes and site plans
  • Luxury inclusions with high-quality construction
  • Award-winning, designer granny flat range

They also highlight their seamless process from design to completion, ensuring customer satisfaction. Paramount Planning and Construction helps clients navigate council approvals and supports the construction journey. With a commitment to excellence and customer feedback, they have built a reputation as a trusted granny flat builder in Sydney.

Phone: 02 9395 8805
Email: info@grannyflatsdesign.com.au
Website: https://grannyflatsdesign.com.au/ 

Granny Flats

Granny Flats Sydney specialises in building high-quality, affordable, and efficient granny flats across Sydney. They offer many designs tailored for families and investors, including one—, two-, and three-bedroom units. 

The company focuses on delivering intelligent designs, exceptional finishes, and speedy approval processes. They ensure their granny flats are durable, reliable, and energy-efficient, providing great value for money.

Services Offered:

  • Granny Flat Designs: One–, two–, and three-bedroom granny flats with custom floor plans available.
  • Fast Approvals: Expert assistance in securing approvals for granny flats in Sydney.
  • Efficient Building: Streamlined building processes for investors and families.
  • Transparent and Reliable Service: Offering consistent quality and dependable service throughout the building process.
  • Custom Quotes: Personalised quotes to match specific project requirements.

Phone: 1300 205 007
Email: sales@grannyflat.com.au
Website: https://www.grannyflat.com.au/ 

Granny Flat Builders Sydney

Granny Flat Builders Sydney specialises in constructing high-quality granny flats with fast approval times and an easy, stress-free process. The company has over 30 years of experience in the building industry and uses in-house architects and certifiers to handle everything from initial design to approvals and construction. 

Premium materials, luxury finishes, and expert craftsmanship mark their service. They offer various design options and guarantee high-quality builds with a fast turnaround time, often delivering projects in 8 to 10 weeks.

Services Offered:

  • Granny Flat Design & Construction: Custom designs tailored to your property.
  • Fast Approval Process: Get approvals within 2 weeks.
  • In-House Architects & Certifiers: Full design and certification support.
  • Luxury Inclusions: Free upgrades are available in kitchens and bathrooms.
  • Interest-Free Payment Plans: Affordable payment options.
  • Quick Build Time: Project completion within 8-10 weeks.
  • Premium Quality Materials: Using high-grade materials for durability and aesthetic appeal.
  • Expert Team: Licensed tradesmen with over 30 years of experience.
  • Increased Property Value: Adds substantial value to your property with a high return on investment.

Phone: 1300 830 176
Email: info@grannyflatbuilders-sydney.com.au
Website: https://www.grannyflatbuilders-sydney.com.au/ 

All Custom Granny Flats

All Custom Granny Flats is a trusted builder based in Sydney specialising in custom-built granny flats. With over 30 years of experience and licensing since 1987, they offer a wide range of services from design to construction, ensuring a seamless and hassle-free process. 

Their expert team tailors designs to suit each client’s unique space and requirements. They are committed to delivering high-quality, long-lasting granny flats that add value and space to properties.

Services Offered:

  • Custom Design and Consultation: Tailored design solutions to suit individual needs, with options for selecting from pre-designed plans or creating a custom design.
  • Approvals and Certification: Assistance in securing the necessary approvals and collaborating with accredited certifiers to streamline the process.
  • Construction to Completion: Comprehensive construction services with minimal disruption, ensuring high-quality build and finishing.
  • Site Assessment: Offering specialised solutions for challenging sites, maximising the potential of your space.
  • Quality Guarantee: Built to last with standard inclusions and proven maintenance-free longevity.

Phone: 1300 669 707
Email: info@allcustomgrannyflats.com.au
Website: https://allcustomgrannyflats.com.au/ 

Half Priced Granny Flats

Half Priced Granny Flats specialises in providing affordable granny flat construction services across New South Wales, particularly in Sydney, Campbelltown, Liverpool, and Fairfield. They offer a range of design options for one-bedroom, two-bedroom, and three-bedroom granny flats. As a leading provider, they focus on delivering quality builds at the most competitive prices in the market, ensuring a quick and seamless construction process with a focus on customer satisfaction.

The website also includes a gallery showcasing various granny flat designs, customer testimonials, and various resources for potential clients, such as guides on approvals, returns on investment, and tips for building granny flats. Visitors are encouraged to explore the showroom at Wetherill Park or request a free consultation to discuss their needs.

Services Offered:

  • Granny Flat Designs:
    • One Bedroom Granny Flats
    • Two Bedroom Granny Flats
    • Three Bedroom Granny Flats
  • Additional Resources:
    • Return on Investment Calculator
    • Granny Flat Approvals Guide
    • Granny Flats News
    • Video Tips
  • Free Consultation: Available upon request for those seeking advice on design and construction.
  • Showroom Visit: A full-size display suite at Wetherill Park for clients to explore design options.

Phone: 02 9822 9989
Email: info@halfpricedgrannyflats.com.au
Website: https://halfpricedgrannyflats.com.au/ 

Brickwood Homes

Brickwood Homes is a trusted home builder serving Sydney and NSW. The company specialises in custom home construction, granny flats, duplexes, and renovation projects. With over 20 years of experience, it emphasises quality, attention to detail, and client satisfaction. 

They work closely with clients from the initial consultation to the final build, ensuring every project is completed to the highest standard. Brickwood Homes aims to make the home-building process as stress-free and enjoyable as possible, focusing on meeting budget and timeline expectations without compromising quality.

Services Offered:

  • Custom Homes: Tailored designs and builds for unique living spaces.
  • Granny Flats: High-quality, efficient designs for secondary dwellings.
  • Duplexes: Expert construction for investment properties and multi-family homes.
  • Renovations and Extensions: Transforming existing spaces with innovative designs.
  • Project Management: Professional supervision to ensure projects run smoothly.
  • Design Consultation: Assistance in choosing the best home layout and finishes.

Phone: 1300 111 202
Email: info@brickwoodhomes.com.au
Website: https://brickwoodhomes.com.au/ 

Backyard Grannys

Backyard Grannys is a leading builder of granny flats, specialising in custom, high-quality designs for clients in Newcastle, Sydney, Central Coast, and surrounding areas. With over 10 years of experience and over 1,000 successful projects, they are renowned for their exceptional service and craftsmanship. Their services are tailored to meet various needs, such as investment properties, elderly family accommodation, home offices, etc. 

The company offers diverse granny flat designs, including studio, one-bedroom, two-bedroom, three-bedroom, and two-storey options. They ensure a seamless building process by providing comprehensive services from design and approval to construction and project management.

Services Offered:

  • Custom granny flat designs (1-bedroom, 2-bedroom, 3-bedroom, studio, and 2-storey)
  • High-quality construction and timely project completion
  • Turnkey pricing for all services (design, approval, construction, and project management)
  • Expert advice on granny flat design and construction
  • Assistance with council approvals and permits
  • Investment property solutions
  • Elderly family accommodation and home offices
  • Comprehensive design and floor plan options
  • Consultation on cost and budget planning

Phone: (02) 4947 2800
Email: sales@backyardgrannys.com.au
Website: https://www.backyardgrannys.com.au/ 

Greenwood Homes

Greenwood Homes provides high-quality, custom-designed homes, granny flats, and other building services for the Central Coast, Lake Macquarie, Newcastle, and Hunter regions. With over 20 years of combined experience, they specialise in creating homes tailored to the client’s needs, offering fully customised designs and build plans. They focus on using 100% treated pine timber, and every aspect of the home can be customised, from layout to fittings. They provide a complete building package from design to completion, ensuring the process is straightforward and stress-free for clients.

Greenwood Homes also caters to those needing additional space, offering solutions such as granny flats, pool cabanas, hobby rooms, and home offices. They work with clients to ensure that even limited spaces are utilised effectively. Their services include new homes, renovations, and bespoke outdoor buildings. They offer guidance throughout the building process and are strongly committed to customer satisfaction, delivering projects that align with the budget and vision. The company is also a member of the Housing Industry Association (HIA) and a certified GreenSmart Builder, ensuring they adhere to industry standards and prioritise sustainability.

Services Offered:

  • New Homes: Custom-designed homes with flexible floor plans.
  • Granny Flats: Fully customisable granny flats tailored to client needs.
  • Renovations: Transforming existing spaces to meet updated requirements.
  • Outdoor Buildings: Pool cabanas, hobby rooms, and home offices.
  • Complete Design and Build Package: Includes design, site inspection, certification, and approvals.
  • Sustainable Building: Expertise in building energy-efficient homes focusing on environmental sustainability.

Phone: 1300 622 989
Email: sales@greenwoodhomes.com.au
Website: https://greenwoodhomes.com.au/ 

Smart Choice Granny Flats

Smart Choice Granny Flats specialises in the design, construction, and installation of high-quality granny flats in Sydney. They offer tailored solutions for various needs and provide a range of designs, including single-storey, double-storey, and garage conversions. 

With a focus on affordability, intelligent design, and superior finishes, Smart Choice promises to deliver customised granny flats that meet individual preferences. The company has over 35 years of combined experience in the building industry and guarantees exceptional quality, transparency in pricing, and timely delivery.

Services Offered:

  • Free site inspections and quotes
  • Custom designs tailored to client requirements
  • A wide selection of pre-designed granny flats
  • Transparent pricing with no hidden costs
  • Fast design and approval process (as little as 3 weeks)
  • Guaranteed build time of 16 weeks
  • Fixed price guarantee
  • Money-back guarantee if building approval isn’t obtained
  • A range of display homes and showroom options for customer visits
  • Premium construction with quality materials

Phone: +61 1300 176 278
Email: info@smartchoicegrannyflats.com.au
Website: https://smartchoicegrannyflats.com.au/

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    That’s why we are the only multi-award winning Granny Flat company for excellence in design and construction. We thrive from a challenge, from multi generation living to investments, we can cater to your needs. Our experienced team can guide you through every step of the process from concept to construction. With over 1500 customers in Melbourne and the Victoria region, you’ll see why we’re the leaders in our field.

    Call: (123) 456 7890
    Email: lorem [@] com.au

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