design & build guide.

Build with clarity, confidence, and a plan that actually works.

learn how to plan your dream home.

Starting a home journey can feel overwhelming with too many decisions,too many unknowns, and too many ways to get it wrong.

The INTERLOCK. 8 Step Design & Guide distils the entire process into a clear,structured pathway so you know exactly what to expect, when to act, and how to avoid costly mistakes.

Build with clarity, confidence, and a plan that actually works.

Download Guide below

book your Design & build consultation.

If you prefer to talk to INTERLOCK. about your property or to understand more about the the importance of our integrated 8 step Design & Build process, please contact us. We will work with you to understand your vision, your budget, explain your approval pathway and show you exactly where risks lie and how to avoid them.

testimonials.

Ruadhan King

Randwick

“We had a terrific experience with Interlock - they were professional and transparent in everything they did and provided some great suggestions on ways to improve the build. Highly recommended.”

Natalie Barr

Northern Beaches

“We loved our builder. They handled everything from design, council approval, to the build. Their architect listened to what we wanted and gave us realistic options. The building team was polite, friendly, and patient. They made the whole process easy, and we'd definitely recommend them. Troy, Nathan, and Nick were fantastic!”

Natalie Barr

Northern Beaches

Greg & Claudia Mckeon

Putney

“We were exceptionally happy with the services we received from Interlock on our family home in Putney, NSW. Nick and his team did a great job in providing a very high quality affordable renovation on our house”

Theo Damianakis

Warren View Hotel

"Nick was subcontracted to site manage the renovation of our pub the Warren View Hotel and did an excellent job in delivering the project on time and with the desired quality outcomes."

Row of attached residential houses with verandas, ornate iron railings, and steps leading up to the front doors under a tree with visible shadows on the sidewalk.

Austin Drareg

ANNANDALE

“Interlock delivered a seamless, high-quality renovation in Annandale, expertly managing design, approvals, and construction. Troy and Nathan ensured smooth execution, with outstanding craftsmanship from the team. Their professionalism and commitment made the process stress-free and enjoyable. Highly recommended.”

Chloe & Jess

MARRICKVILLE

“Interlock just completed the interior design and renovation plans for our house in Marrickville. Angie and Troy were wonderful to work with — very collaborative and great communicators. We really appreciated getting the design done with interlock. As expert builders they were able to advise on the practicality and cost of different ideas. Would absolutely work with them again.”

Bright modern kitchen with white cabinetry, large island with pendant lights, wooden floor, and a large window showing green trees outside.

Gabrielle A

GORDON

“The Interlock team were flexible with scope, design and timing. The team always offered helpful advice and kept us informed about all aspects of the project, including issues that had the potential to affect the budget or schedule. Our project was completed on time (a day early!) and on budget, with a high-quality finish that has genuinely transformed our home. The Interlock team were a pleasure to work with, they managed the project seamlessly and I highly recommend working with them."

Calvin L

SYDNEY

“It’s been a pleasure working with Nathan, Gerry, Will, Dom, and the entire Interlock team. They are highly professional and genuinely committed to completing building projects to the highest possible standard. I highly recommend them to anyone looking to build their dream home!"

design & build with us.

INTERLOCK. is a Sydney based company specialising in Design & Build. Our Design services include Concept Design, Planning, Architectural Documentation, Approvals, Interior Design, and more. Our Build Services include ECI consulting, Estimating, Project Management, Alterations & Additions, New Builds. We are also registered under the DBPA for both Design and Build services for Class 2 construction.

We acknowledge the Traditional Custodians of the lands on which we work.
We honour their elders, past, present, and emerging.
We recognise that their lands were never ceded, and their enduring connection to the land, water and culture.

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