Sydney's Custom Home Design
& Construction Specialists
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About us
Designing & Building Custom Home Additions and Extensions for over 60 Years
Whether you’re renovating a Federation home, creating an open-plan family living space, designing a multi-generational home, rebuilding on your existing block or unlocking the development potential of your property, our experienced designers and builders will create a solution tailored to your family’s lifestyle and your budget.
We proudly design and build throughout Sydney, from the Northern Beaches and North Shore to the Eastern Suburbs and Greater Western Sydney, delivering homes that combine timeless design with exceptional quality.
Having successfully completed more than 8,000 home additions across Sydney, we’ve built a reputation for thoughtful design, exceptional workmanship and an outstanding client experience. Today, that same expertise extends beyond first floor additions to include custom home extensions, knock down rebuilds and dual occupancy developments.
8000+
Sydney Home Additions
60+
Years
$0
Cost of consultation
10 Yrs
Structural Warranty
What We Do
First Floor / Second Storey Additions
Our core specialty. Rather than moving house, add a whole new level to your existing home — extra bedrooms, a second bathroom, a parents' retreat or a dedicated study — without sacrificing your backyard or your postcode. With over 8,000 second storey additions completed across Sydney, we know how to design upward extensions that feel like they were always part of the original home, not an afterthought bolted on top.
Custom Home Extensions
Open up your ground floor to the way your family actually lives — a bigger kitchen, an open-plan living and dining space, or a seamless indoor-outdoor connection to the backyard. Every extension is custom designed around your existing home's style, whether it's a Federation cottage, a Californian bungalow or a contemporary build, so the new space blends in rather than standing out.
Knock Down Rebuilds & Dual Occupancy
Sometimes the smartest move isn't extending — it's starting fresh. If your existing structure can't support the addition you want, or your block has development potential, we'll design and build a brand new home from the ground up, or explore a dual occupancy solution to unlock your property's full potential. Same team, same one-stop-shop process, from concept to keys.
Why Choose Us
From Phone Call to Housewarming.
Step 1 — Free Consultation
An informal, obligation-free chat where we listen to your needs and give clear guidance on what's achievable and the likely cost.
Step 2 — Concept & Design
We prepare a detailed proposal with sketch plans, discussing any fees upfront and only proceeding once you give approval.
Step 3 — Plans & Approvals
We finalise detailed plans, arrange engineering certification, and handle all council submissions, approvals and inspections.
Step 4 — Building Contract
A standard HIA NSW contract with a fully itemised specification—everything spelt out clearly, with no hidden costs or surprises.
Step 5 — Construction
Your dedicated supervisor keeps the build on track, backed by a 24/7 hotline for any emergencies throughout.
Step 6 — Handover
We walk you through your finished spaces, and your Cape Cod 10-year structural warranty begins.
Our Project Galleries
Our project galleries feature 2nd storey extensions and renovations in all house styles and price categories.
450k
Smart, well-designed additions that make the most of a smaller budget without cutting corners on quality.
450k-650k
Our most popular range — a full second storey addition or family-sized extension, done properly.
650k-850k
More space and premium finishes, with room for a larger footprint and extra design flexibility.
850k+
Fully custom builds and knock down rebuilds, tailored entirely around how your family wants to live.
People Say The Nicest Things
We’ve had the pleasure of working with many incredible clients over the years, and their kind words mean everything to us. The testimonials below are just a small glimpse into the most recent experiences and the lasting relationships we have created on every project over our many years in the industry.
Kelly and Kim
We are absolutely thrilled with the finished result and love our new home.
From the initial design stage through to construction and handover, the team was professional, organised and responsive. Communication was clear throughout the project, and any questions or concerns we had were addressed promptly.
Adriaan (Neighbor)
We are the residents next door to where you have recently completed renovations. I just want to thank you for your kind letter and subscription gift.
The renovations next door were really very little trouble to us at all. Please thank your team for being considerate during construction. I really appreciate your letter. It represents an unusual degree of consideration and care.
Alicia & Julian
Having Cape Cod manage the design, approvals and construction made the whole process incredibly smooth. Our Design Consultant, Charles created designs that were practical, economical and aligned with our style, while our Construction Supervisor, Aaron kept everything running efficiently on site. We’re thrilled with the result. We have more space, more light and a seamless blend of old and new.
Get A Solutions For All Home-Extension Services
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Cape Cod Australia Pty Ltd
ABN 54 000 605 407
Builders Lic. No 5519