Home Builders Across The Hills
Second-storey additions, extensions and new homes for Castle Hill, Kellyville, Baulkham Hills and Cherrybrook families who’ve outgrown their block.
Free, no-obligation · same-day response · licensed & insured
The Hills build
A 1990s or 2000s house on a larger block is the build Panadium sees most often across the Hills District, under The Hills Shire and western Hornsby councils, where a family has run out of room and doesn’t want to leave the street, the school run or the block they chose. Panadium has been building homes and renovations since 1996, run by licensed builder Alex Panah from a studio in Pyrmont, and has seen this exact house shape often enough to know its options cold. For a family in that position there are three honest paths — a second-storey addition, a rear extension, or a secondary dwelling at the back — and the real fear isn’t the design, it’s living through a bare-roof build, which is why one Panadium team stays on your job, one trade at a time, start to finish.
Why Panadium
We assess your block honestly against council controls, then design a second-storey addition or a rear extension that matches your existing home design. Either path adds real bedrooms and living space without changing your address.
We sequence the trades and weatherproof as we go, so your family can stay in the house while the roof comes off and goes back on. One project manager keeps the site tidy and the program on track.
Design, council approval and construction stay under Panadium’s own NSW builder’s licence for the whole home build. One fixed-price contract covers every trade, from first sketch to handover.
Recent work, Cherrybrook
Cherrybrook is the clearest proof of what a Hills second-storey build looks like: a single-storey home on a standard block taken up to two full storeys without the family moving off site, on exactly the same footprint before and after.
Before After Where we build
What families say
Real, named reviews from Google — the only testimonials we publish, because a homeowner considering a second storey deserves more than a marketing quote.
“Great builder, very organised and transparent. No stress throughout the project.”
NSW Licensed Builder · HBCF Cover · icare · Tender-Prequalified · Master Builders · HIA Member · $20M Public Liability
Continue exploring
Second-storey additions are our lead service for the Hills, and a fixed-price quote covers whichever path — up, out or a new build — suits your block.
Before you call
Yes — Panadium builds throughout the Hills, from Castle Hill through West Pennant Hills, Cherrybrook, Rouse Hill, Bella Vista, Glenhaven and Dural, as well as our regular Sydney working area beyond the Hills Shire.
It depends on your block and the council’s height and setback controls — we assess both a second-storey addition and a rear extension honestly, then give you one fixed price for whichever option wins, so you’re not paying to compare quotes.
Yes, for most jobs. Your family stays in part of the house while the rest of the site is sealed off and the build is staged trade by trade, so there’s no single day the roof is fully off with nowhere to live.
There’s no honest single figure — too many site factors move it, from access and slope to how much of the existing house is kept. Every Hills quote is a fixed-price quote before any work starts, never a starting-from estimate.
Free fixed-price quote
Send a few details and a Panadium project manager will call you today — a free feasibility check on your block and a fixed-price quote for your second storey, extension or new build.
Prefer to talk it through? (02) 9433 1212