A granny flat is a self-contained, secondary dwelling on a property with a main house, including facilities like a bedroom, kitchen, bathroom, and laundry

Building a granny flat offers a wide range of benefits that make it an increasingly popular option for Sydney & NSW homeowners looking to maximise the value and functionality of their property.

Granny flats are smaller and more compact than traditional homes, meaning they can be designed for efficient living and built in a fraction of the time—often without the lengthy delays or costs associated with full-scale residential construction. Because they’re built on a pre-existing block of land, you’re not starting from scratch or purchasing new land, which significantly reduces your investment outlay.

From an investment standpoint, granny flats are a smart choice. They can provide a secondary income stream if rented out, increase your property’s resale value, or serve as comfortable accommodation for family members—whether that’s elderly parents, adult children, or visiting guests.

And because they’re located on your existing property, you retain close proximity and greater control if used as a rental. Granny flats are also incredibly versatile. Whether you’re converting unused backyard space into a functional living area, creating a home office or studio, or looking for long-term multigenerational living options, granny flats offer flexibility without compromising on comfort or quality.

In short, a granny flat is a cost-effective, low-maintenance, and high-return addition to your property that suits a variety of lifestyle and investment goals.

What are the site requirements in Sydney for a granny flat? In Sydney, granny flats can often be approved without a full Development Application (DA) if your property meets certain criteria under the NSW State Environmental Planning Policy (SEPP), now known as the Housing SEPP.

Here are the key requirements:

✅ Minimum Lot Size: 450m² total land size

✅ Zoning: R1, R2, R3, R4, RU5 or SP1

✅ Existing Dwelling: A primary home must already exist or be built alongside

✅ Maximum Size: 60m² of internal floor space

✅ Setbacks: 3m from rear boundary, 0.9m from sides (may vary by council)

✅ Street Frontage: Minimum 12m or suitable access

✅ Open Space: Sufficient private outdoor area for both dwellings

✅ Parking: Not mandatory, but preferred in some areas

But don’t worry—we handle this for you. Our team conducts a free initial site assessment to check all requirements and ensure your property is eligible before anything moves forward. We take the guesswork out and guide you through every step.

Once approvals are complete and construction begins, the build typically takes just 12 weeks.

We know how important timelines are—so we back it with our Timeline Guarantee:

✅ If we don’t finish your granny flat on time, we’ll give you $3,000 cashback.

This guarantee gives you peace of mind that your project will stay on track and your new space will be ready as promised.

No stress—we handle the entire approval process for you.

We work with our own private certifiers to streamline approvals and avoid lengthy council delays, so you don’t have to lift a finger. From compliance checks to final sign-off, we take care of it all.

Yes—every build is backed by a 7-year builder’s warranty for your complete peace of mind. We stand by the quality of our workmanship and materials, ensuring your granny flat is built to last.

We combine over 50 years of Tier 1 construction experience, a proven design-to-build process, and a strong track record of on-time, on-budget delivery. Every project includes:

✅ A full in-house team covering design, approvals, and construction

✅ A timeline guarantee with $3,000 cashback if we run late

✅ A 7-year builder’s warranty

✅ Transparent, fixed-price contracts—no hidden fees

With over $88 million in completed building projects, we’ve earned the trust of homeowners across Sydney looking for quality, efficiency, and peace of mind.