Top 30 Granny Flat Builders in Sydney (2023)

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A granny flat is an additional living space in your backyard that can help you with childcare or eldercare. 

If you live in Sydney, and are looking for a company to build your new granny flat, we've done the research for you and have compiled a list of some of Sydney's top granny flat builders with their contact details.

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    Ultimate List Of Granny Flat Builders In Sydney

    Absolute Granny Flats Sydney

    absolute granny flats

    1300 580 176

    Absolute Granny Flats is a family business that has been constructing Granny Flats, Homes and Cabins for over 40 years. They are a dedicated team of professional granny flat builders with all the expertise of a giant corporation packaged into a local and friendly team. They have over 40 years of valuable and practical experience and they are constantly learning how to be better. They specialise and operate in all areas of Sydney

    At Absolute Granny Flats, they specialise in the design and construction of affordable, modern and versatile granny flats Sydney wide. Their team are dedicated to providing just that; a superior range of modern granny flats.

    Whether it be one, two or three bedrooms, there is a flat to suit anybody and any situation. At Absolute Granny Flats, they are established in Sydney, New South Wales who are committed to providing comprehensive and integrated granny flat construction.


    Their goal is never to just build a building, but we strive to achieve the best result in all areas of the customer journey from the initial enquiry to the completion of the granny flat and beyond! Another they are set apart from the crowd is their fixed-price contract quote combined without extensive inclusions for no extra cost.

    With great pride taken in every build, Absolute Granny Flats will ensure each and every client receives the build of their dreams. Looking at building an affordable granny flat, a sleepout cabin or your first home? Or, do you need to find the perfect accommodation cabin for your guests? Look no further! Based in Sydney, they are your trusted partner in installing and delivering that valuable extra space for your property anywhere in New South Wales.

    Granny Flat Builders Sydney

    granny flat builders sydney

    1300 830 152

    We have over 30 years of construction experience, and our company contributes to the sustainability of affordable housing in New South Wales by producing high-quality Sydney granny flats. We have assembled a team that is implicitly trustworthy and consistently exceeds expectations in terms of building quality. We specialize in "making it simple for you...."

    5 Star Granny Flats 

    5 star granny flats

    1300 843 945

    Our skilled team is committed to transforming each client's needs into a uniquely tailored solution, providing a seamless service, and producing outstanding results.

    Our skilled team is committed to transforming each client's needs into a uniquely tailored solution, providing a seamless service, and producing outstanding results. Furthermore, we strive to complete each client's project on time and within budget while adhering to the highest level of safety and quality standards.

    Granny Flat Solutions Sydney

    granny flat solutions

    1300 259 645

    We only hire experienced and talented people who share our core values of honesty, transparency, integrity, accountability, and quality, which have helped grow our (once small) family business into one of Sydney's largest Granny Flat builders. Our experience and long-term commitment to the industry give our customers the assurance that they are dealing with a company that designs and constructs nothing less than high-quality, award-winning Granny Flats that will last a lifetime.

    Granny Flat Builders FAQs

    The cost of building a granny flat varies — it depends on the quality of the build you are gunning for, as well as the purpose of the flat. Constructing a granny flat could take as little as $20,000 to as much as $200,000.

    In choosing how to set up your granny flat, there are several options you can consider. There are prefabricated and modular homes that can be installed in your backyard, but you can also build a granny flat from scratch.

    When it comes to financing the construction of your granny flat, you also have a range of choices. You can either use the equity you built in your home or apply for another loan. However, it would help if you were prepared to have your home revalued.

    You can also ask your lender if they offer loans specifically catered to the construction of granny flats. Another alternative is to refinance your existing home loan with a new credit provider.

    Like any investment property, granny flat costs depend on your needs and what you want to build. However, many experts agree granny flats prices are, on average, around $100,000 for a one-bedder.

    Here are a few reasons why granny flats are a popular option for investors:

    The rental income could provide cash flow. Many people rent granny flats, from students and young singles looking for affordable housing to retirees wanting to downsize.

    Building a granny flat is usually cheaper than buying a standalone investment property. It's also unlikely to interrupt your everyday routine, like home extensions and renovations.

    Adding a granny flat to your house could increase your resale value. In addition, it gives the new owner the option to earn rental income and the benefit of an extra bedroom.

    How is a granny flat investment taxed?

    Like any other investment property, tax is payable on the rental income you earn from your granny flat. The Capital Gains Tax liability also applies. On the flip side, granny flat tax exemptions might be available.

    If you're wondering, can you negatively gear a granny flat? Unfortunately, the answer could be yes! If the cost of your granny flat is more than your income, you could claim the loan interest and ongoing expenses (like maintenance and insurance) as tax deductions. But if your granny flat is positively geared (as in, the rental income is more than your expenses), you can only claim the ongoing costs. You might also be able to claim value depreciation, but always remember to seek professional advice.


    The conversion of part of a dwelling to form a granny flat or separate unit is not an exempt development. Planning permission is required. Most local authorities require that the granny flat reverts to use solely by the family if the granny flat use is no longer necessary, meaning that it could not be rented to the public.

    The rent-a-room scheme allowed by Revenue permits the use of part of a dwelling as a self-contained unit. To achieve planning permission for a self-contained unit, which is not classed as a granny flat, the development needs to meet strict planning requirements regarding private amenity space, parking, and separate connection to services and the like do not apply to granny flats.

    When building a granny flat, your budget and local regulations will determine what is allowed. So, what is the minimum size a granny flat can be?

    Depending on your local Council, the regulations on how big your granny flat can be changed. Generally speaking, the minimum size you can build a granny flat is 40 square metres. The maximum size you can create a granny flat ranges anywhere from 50 to 100 square metres.

    A granny flat is a compact living solution built on your property or investment property. It can be completely separate, attached to the main house, a garage conversion or a part of your home converted to a granny flat. Here are some of the best and most common reasons people choose to build a granny flat:    

    Keep your family close.

    A Granny Flat can provide additional accommodation for extended family, teenagers or elderly parents. With the demand for accommodation options for the elderly at an all-time high, let the experts guide you through the process of creating the ideal home for your loved one. Our flexible designs will allow you to keep your family close and empower them to maintain their independence.   

    Dazzle your guests

    Struggling to find space in your home for your extended family and friends when they come to stay? Let us help you create a dream experience for your guests in your new granny flat.

    Custom-made for creativity

    Your new granny flat is the perfect spot to get your creative juices flowing with your very own artist's space or music studio.

    Work from home

    Sick of the daily commute? Why not save travel time and money with a Home Office in your backyard.  

    Earn rental income

    Always loved your home and location? Let others love it too! Supplement your income through renting out your granny flat to tenants, or rent out your main house by moving into your granny flat. 

    Maximise your earning potential

    Maximise your earning potential on your investment property by adding a dwelling to your investment property. Two rents can turn your negatively geared property into a cash flow, positively geared investment. 

    Increase the Value of your Property

    By adding a second house to your property, you can increase the value of your property by 20-25%. 

    Design your dream

    With our Granny flat sizes ranging from 35m2-60m2, we give you the flexibility you need to design your dream studio or small house with 1, 2 or even three bedrooms. 


    Granny Flat Approvals Sydneygranny flat approvals

    1300 205 045

    We can even construct homes larger than 60 square meters. We can add Patios, Verandas, or Awnings to your new granny flat while still meeting the 10-day approval legislation if you need more space. We make every effort to provide a healthy and desirable family environment, as well as a desirable tenancy for our investors.

    We will handle your approval, design, and construction if you require a builder. In addition, we encourage our customers to get quotes and compare prices. Remember, we're here to save you time and money. For more information, visit our new Instant Granny Flat Build Page.

    Granny Flats Australia Sydney

    granny flats australia

    (02) 9899 9154

    We take education, legislation, and compliance seriously and work hard to stay current on new information and changes by collaborating with Councils, Private Certifiers, and Engineers. This allows us to provide accurate information, assessments, and pricing up front.

    Granny Flat Sydney By Blue Gumblue gum

    1300 06 06 45

    We take education, legislation, and compliance very seriously and work hard to stay up to date on new information and changes through collaboration with Councils, Private Certifiers, and Engineers. This allows us to provide accurate information, assessments, and pricing up front.

    We work with you to create the ideal granny flat for your specific requirements; our open approach is intended to help you make more informed decisions. Because only high-quality materials and artistry were used, you can be confident that your new granny flat is of the highest quality.

    Master Granny Flats

    master granny flats (mgf)

    1300 643 545

    'The best investment you can make for your home.' We work hard to ensure that your Master Granny Flat is built to a high standard, that it meets your vision, and that it complies with all regulations. Master Granny Flats is an established Australian company. The company was founded and is led by Robert Daoud, who has over ten years of experience in the construction industry.

    We are a leading granny flat builder in Australia. Our projects are all completed to a high standard. 10+ years of experience and a genuine desire to please customers Above all, we value our client relationships.

    Inhouse Granny Flats

    inhouse granny flat

    9659 9045

    We understand that each competitor is unique in their own way at Inhouse Granny Flats. Our company is built on trust, and as we like to say, "we're not just better, we're different."

    The ability to communicate directly with a granny flat builder from the time you request the initial site inspection until the final handover is one of the many advantages of working with us. Along the way, our expert builder will be available to answer your questions and provide professional advice.

    Rescon Granny Flats

    rescon builders

    1300 110 054

    RESCON Builders is a well-known Australian company that designs, constructs, and reinvents granny flats in New South Wales. Since our inception in 2011, we've inspired thousands of Australian families to live a new way of life by transforming the concept of small-scale granny flats into a full-home living experience.

    Smart Choice Granny Flats

    smart choice granny flats


    Excellent Option Granny Flats is dedicated to providing the best value for money on a high-quality product to our customers. You are in good hands with 35 years of building experience, a specialisation in Granny Flats since 2012, and over 400 Granny Flats built to date.

    We take a no-nonsense approach to construction and provide a Fixed Price Turnkey Quotations Guarantee with no hidden fees. Clever move Granny flats rely heavily on trust and openness. In our opinion, trust is essential.

    Db Homes Granny Flatsdb homes granny flats

    1300 050 645

    We are a dedicated team of professionals with all of the expertise of a large corporation packaged into a small and welcoming team. We have over 35 years of valuable and practical experience and are always looking for ways to improve. We specialize and operate throughout Sydney, Wollongong, the Central Coast, and Newcastle.

    Granny Flat Builders

    granny flat builders

    0423 407 278

    In Sydney and the Central Coast, granny flat builders are experts in granny flat designs, approvals, and quality construction. We offer 100% fixed turnkey prices and Sydney's most affordable granny flats, and we won't be outbid on either price or quality. Custom-designed granny flats and kit homes have been produced by granny flat builders at affordable prices.

    Backyard Grannys Sydney

    backyard grannys

    (02) 4075 7289

    Backyard Grannys was founded by the well-known, reputable building company Nulex Construction, a Newcastle-based builder with a solid track record of providing our clients with excellence, quality, and dependable service every time. Following numerous enquiries for granny flats and extensive market research, we identified a gap in the market that allowed us to draw on our existing knowledge and passion for building to establish Backyard Grannys to service this market.

    Bungalow Homes

    bungalow homes

    02 9984 8954

    Our family-run, award-winning company, Bungalow Homes, is committed to constructing granny flats in Sydney's Northern Beaches and Metro areas that are both high quality and reasonably priced. You can be confident that your building experience will be wonderful because we genuinely care about our clients' happiness and peace of mind.

    Aarons Outdoor Sydney

    aarons outdoor

    I started constructing dog kennels in my parent's carport 25 years ago, which was the beginning of my Aarons Outdoor Living dream. This gave me the opportunity to pursue my passion for remodeling backyards.

    I'm pleased. Aarons is Australia's leading manufacturer and supplier of backyard products. We provide excellent products and services at a reasonable price. That is my pledge. I am confident that you will enjoy your "Aarons Outdoor Living" experience.

    Ark Granny Flats N.S.W.

    ark builders

    0449 637 362

    ARK Granny Flats can provide you with extra space in your existing home without the need to purchase a new one.

    This space can be used by your children, elderly parents, or even as a secondary source of income. We have a variety of established and affordable plans from which to choose. If you require a one-of-a-kind design, we can connect you with designers, drafters, and architects as needed for your project.

    Granny Flats For Less (GFFL)

    granny flats for less

    (02) 8605 8445

    Granny Flats For Less (GFFL) evolved from Elegant Homes N.S.W., a sister company primarily focused on primary residential buildings.

    We saw a growing demand for granny flats and made the wise decision to separate services from our primary residential building. Since then, GFFL has built a reputation by focusing on four fundamental principles: quality, design, simplicity, and family. We have long-standing relationships with our building regulators, suppliers, and contractors because we keep up with the latest building methods and technologies.

    Half Priced Granny Flats

    half priced granny flats

    (02) 9822 9989

    When it comes to choosing a granny flat builder, Half Priced Granny Flats provides by far the best value.

    We employ skilled, licensed tradespeople to construct our granny flats on-site over a concrete slab. At Half Priced Granny Flats, we have a sizable staff and a well-oiled system. To ensure that our customers only pay for what is necessary, we have improved our process.

    A1 Granny Flatsa1 granny flats

    1300 941 045

    Every project we work on at A1 Granny Flats is something we are proud of because it is what we are passionate about. So, unlike most builders, we can provide you with a clear, step-by-step process that has been refined over more than 30 years of experience.

    Amescorp - Granny Flat Builders Sydney


    (02) 8798 9845

    We guarantee that the highest quality manufacturing standards are met without breaking the bank. When it comes to granny flats of any kind, you can always rely on our experienced and efficient granny flat builders. Do you have any thoughts? We can provide customized solutions to fit your budget.

    Butres Group - Granny Flat Builders Sydney

    butres group

    0404 987 045

    We are a group of enthusiastic and engaged professionals who deliver first-rate results on every project. First and foremost, we strive to exceed your expectations of what is possible and provide an exceptional result for your renovation; after all, it is likely to be one of your largest investments. Second, best is not an option for us; we build and create from the bottom of our hearts; each building has its own energy that continues to reflect both its creators and owners.

    Croydon Constructions

    croydon constructions

    0414 716 345

    Croydon Constructions - Quality Builder In Sydney's Western Suburbs Croydon Constructions is a strong company that is expanding. We built our company on these values, and it has worked well for our customers.

    Do you want some advice? We provide free consultations to discuss your ideas and get the project started. Furthermore, we can provide estimated costs for various options and assist you in getting it approved.

    We build Australia

    we build australia

    1300 000 145

    We are a dedicated group of licensed builders, architects, certifiers, and designers who have built and renovated thousands of homes throughout Sydney. Our company's mission is to produce high-quality artwork on time and on budget for all of our projects. We are very proud of our finished projects, which are among the best new homes, granny flats, duplexes, and townhouses Sydney has seen.

    I-build Building Solutions

    i build

    1800 679 245

    We are a 100% Australian-owned company that won the 2016 Monash Business Awards - Innovation and was a finalist in the 2017 Telstra Business Awards. Kit homes, granny flats, modular buildings, containers, and steel structures are among our offerings.

    We are a Victoria Government and United Nations Approved Tender Supplier of prefabricated buildings. We have a worldwide reputation for innovation. Our innovative InstantSlide, ButterFly, and Transpack buildings garner international media attention, creating an international sensation.

    Doumit Homes


    02 8812 3045

    We have a very friendly and extremely talented skilled team that can build your custom-designed dream home, duplex, or granny flat while assisting you in hand-picking all of the finishes.



    08 7111 1355

    We at Modular WA are sincere. Although our name is new, the team behind it is rife with expertise. We have brought back a team that has worked on some of Western Australia's most avant-garde modular projects, led by Wayne McGrath and supported by the financial might of the Wylie Group.

    Tekton Building Group


    0422 605 345

    Starting out as a small home builder, Tekton Building Group has quickly expanded into a medium-sized home builder with a significant market impact. With more than ten years of experience working in the construction industry, creating family homes, and realizing dreams.

    As a result, we saw a need to expand our footprint at Tekton Building Group. The name Tekton is derived from an ancient Greek word that means "Master Craftsman." We take pride in the entire building process, not just the construction.

    Bellcast Granny Flats

    bellcast granny flats

    1300 661 345

    Bellcast Construction Group takes pride in its more than 15 years of experience in residential granny flat design and construction in Sydney. As a result, you can relax knowing that you are dealing with a reputable company. Our work speaks for itself, and we make certain that all of our construction projects completely satisfy our customers.

    Aussie Granny Flats Sydney

    aussie granny flats

    0418 338 593

    We provide an exciting opportunity to create a home that reflects your unique needs and way of life as custom builders and designers. Since our designers and builders collaborate, you can expect a quicker delivery and less stress as your custom granny flat is constructed on time and within your set budget.

    Once we and you have agreed on the design strategy, we can move quickly to get your project approved by all building authorities, start construction, and deliver the finished product on schedule.

    Inspire Concrete Sydney

    inspire concrete


    We specialize in all aspects of concrete construction, from design and planning to concrete construction and installation to repair and maintenance. Our firm provides a wide range of concrete solutions for both residential and commercial properties.

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