Home Extensions Sunshine Coast
Add the space your family needs without leaving the street you chose, with an extension builder who handles the structure and the approvals.
How we approach an extension
Extending usually beats moving. You stay in the street you chose, and the money goes into the part of the house you actually use. What you need is a builder who can join new work to old without it looking like an afterthought.
Tom Robilliard manages every project with regular site meetings and clear progress updates. At handover, you’ll receive a detailed walkthrough and a customised home manual, followed by 12 months of maintenance support to ensure everything performs as it should. You get Tom as your direct contact, regular site meetings, monthly progress reports and 24/7 Wunderbuild access to photos, costs and selections.
Anyone can add a room. The work that separates a good extension from an obvious one is where it meets the existing house. Roof lines. Floor levels. Ceiling heights. Whether the new windows read as part of the same building. We plan those details with your designer before construction rather than resolving them on site with the frame already up.
Extensions also carry more engineering and more council involvement than most owners expect. A second storey means the existing footings and frame need assessing. Coastal sites bring wind loading. Setbacks, height limits and overlays shape what you are allowed to build at all. We bring engineers and your design team in early so the plans you commit to are plans that can be approved and built.
Before you sign, you get concept plans and a cost estimate, then finalised plans, a detailed quote and a construction schedule with milestones. We will be honest about approval timeframes rather than quoting the version everyone hopes for.
The whole job, from feasibility through to handover.
- Feasibility and existing structure assessment
- Engineering coordination for structural work
- Council approvals and certification managed
- Concept plans and an early cost estimate
- Detailed quote with a construction schedule
- Founder led site management throughout
About T Casa
T Casa Projects extends, renovates and builds homes across Noosa and the surrounding Sunshine Coast. Founder Tom Robilliard has 16 years in construction and has lived in the Noosa area for more than 20 years.
He runs every project personally rather than handing it to a supervisor. We work from Noosa Heads through Sunshine Beach, Marcus Beach, Peregian Beach, Coolum Beach, Marcoola, Eumundi, Cooroy, Pomona and Doonan.
Master Builders Association member.
QBCC licence 15455661. ABN 71 675 028 181.
How an extension runs
A short conversation about your home, the space you need and where you are up to.
We meet on site, assess the existing structure and discuss what is possible, then sign a preliminary agreement.
Concepts are developed with engineering input, and you receive a cost estimate.
Plans are finalised, approvals lodged, and you receive an itemised quote with a construction schedule.
The Master Builders contract and fee schedule are signed.
Works are staged around you where possible, with regular site meetings and progress reports through to final walkthrough.
Halse Lodge
What to Expect
Three objections that stop people enquiring, named plainly, with how we handle each one.
1. Living on site while we build
Most clients stay in the home for at least part of an extension. We stage the works, keep the site secure and clean at the end of each day, and tell you at the site meeting which weeks will be disruptive so you can plan around them.
2. Council approval holding up the job
Approvals are the least predictable part of an extension, and timeframes quoted early are often optimistic. We tell you what is realistic for your council and your site, lodge early, and keep the design and pre-construction work moving while the application sits.
3. New work that does not match the existing house
Roof lines, floor levels, ceiling heights and window proportions decide whether an extension looks original or added on. We resolve those details with your designer before the frame goes up, and our carpenters build the junctions where the two meet.
FAQs
It depends on the condition of the existing home and how much you want to keep. Extending usually costs less than a full rebuild and keeps you in the same location. We will give you a considered view at the site meeting.
An engineer assesses the existing footings and frame early in the process. We arrange that during pre-construction so you know what is possible before committing to a design.
Cost is driven by the size of the addition, the structural work needed below it and the finish level. You receive a cost estimate at concept stage and a detailed quote before contract, with a construction schedule alongside it.
It varies by council and site, and it is the least predictable part of the project. We will tell you what is realistic rather than the best case.
Yes, and it is often the better approach. One contract avoids paying twice for site setup, scaffolding and trades.
Service areas
Noosa Heads, Sunshine Beach, Marcus Beach, Peregian Beach, Coolum Beach, Marcoola, Eumundi, Cooroy, Pomona, Doonan.
Related Services
Home Renovations, Custom Home Builds
Let’s talk about your extension
Tell us about your home and the space you need, and we will walk you through what is involved on your site.