- 2/22 Hudson Avenue, Castle Hill, NSW 2154
- View Open Homes
For over 25 years, Inhouse Granny Flats has been Sydney’s top-rated choice for building quality granny flats that homeowners and investors can rely on.
Plan Your Grannyflat with us
With over 25 years in the industry, we bring proven craftsmanship and reliability to every granny flat project.
From council approvals to landscaping, we manage the entire process so you can enjoy a seamless, stress-free build.
Choose from fully customised layouts and high-quality inclusions designed to suit your style, needs, and budget.
We will contact you with a Free online site inspection.
For more than 25 years, we’ve been delivering granny flats that add long-term value to Sydney properties. As licensed NSW builders and proud HIA members, we follow industry best practices to ensure your build is delivered to the highest standard.
Our reputation is backed by 5-Star Google Reviews from homeowners and investors who value our reliable process, quality workmanship, and clear communication. From council approvals and site inspections to construction and landscaping, we handle everything so you can enjoy a stress-free experience.
For more than 25 years, we’ve been delivering granny flats that add long-term value to Sydney properties. As licensed NSW builders and proud HIA members, we follow industry best practices to ensure your build is delivered to the highest standard.
Our reputation is backed by 5-Star Google Reviews from homeowners and investors who value our reliable process, quality workmanship, and clear communication. From council approvals and site inspections to construction and landscaping, we handle everything so you can enjoy a stress-free experience.
We make it easy to choose the right granny flat for your property. From compact studios to spacious two-bedroom designs, our packages come with clear floor plans, inclusions, and transparent pricing.
Our free ROI calculator shows you exactly what your property could generate – including projected rental income, payback period, and long-term growth. It’s fast, accurate, and designed to help you make confident decisions.
We believe building a granny flat should be simple, transparent, and stress-free. That’s why we’ve created a proven four-step process.
We’ll assess your block anywhere in Sydney and discuss your goals.
Our team prepares your plans and manages all council approvals.
You choose your finishes while we deliver on time and to budget.
Move in, rent out, or hand to a property manager – your granny flat is ready.
With more than 25 years in Sydney’s building industry, Inhouse Granny Flats helps property investors unlock new income streams with high-return, council-approved granny flats – starting from just $140K.
Our fully licensed team, HIA membership, and 5-star client feedback give investors the confidence to build smart – achieving up to 10%+ rental yields and long-term property growth without the stress.
Customer Testimonials
From compact studios to larger family-ready flats, our completed projects can be found all over Sydney. Each one showcases the attention to detail, workmanship, and reliability that we’re known for.
Want to see the quality first-hand? We welcome you to our Sydney showroom or weekly open homes.
Ever wondered why a granny flat in sydney would be a great option?
Our industry insights give away Free Value to anyone considering a granny flat.
