RENOVATIONS & EXTENSION BUILDER – HAWKESBURY, NEPEAN, LOWER BLUE MOUNTAINS & HILLS DISTRICT
THE HOME YOU LOVE, TRANSFORMED INTO THE ONE YOU'VE ALWAYS WANTED.
You don’t have to move to get more. For homeowners across the Hawkesbury and surrounds who love where they live but know the house needs more — more space, better flow, rooms that actually work for the life they’re living now.
WHAT WE DO
REFRESH, EXTEND & TRANSFORM.
A major renovation or extension isn’t just a cosmetic update — it’s a chance to rethink how your home works entirely. Open up the ground floor. Add on at the rear. Reconfigure the layout so it flows the way you want it to. Add the space your family actually needs without the upheaval of moving.
We work with homeowners who are ready to stop making do — ones who have outgrown their current layout and keep putting off the renovation because they want it done properly. With a renovation or extension, you’ll end up with a home that feels brand new without starting from scratch.
We take on significant renovations and extensions across the Hawkesbury, Hills district, Penrith, and the lower Blue Mountains.
IS A RENOVATION OR EXTENSION RIGHT FOR YOU?
YOU MIGHT BE READY FOR A MAJOR RENOVATION IF ANY OF THESE SOUND FAMILIAR.
THE LAYOUT WORKED ONCE BUT IT DOESN'T ANYMORE.
Your family has changed and the house hasn’t kept up. Walls in the wrong place, rooms too small, flow that makes no sense. A renovation fixes this properly rather than working around it.
YOU HAVE PUT IT OFF BECAUSE YOU WANT IT DONE RIGHT.
A renovation at this scale is a real investment. You want a team with the experience to plan it properly, manage it thoroughly, and deliver something that lasts.
YOU LOVE THE HOUSE BUT YOU NEED MORE.
Good bones, right location, great potential. Sometimes a renovation is about realising what was already there – better light, better flow, better use of every square metre.
YOU WANT TO ADD USABLE SPACE WITHOUT LOSING THE YARD.
Rear extensions, ground floor reconfigurations, new living areas that connect properly to the outside – renovations can add usable space without the build footprint taking over your block.
HOW WE WORK
PLANNED PROPERLY, NO SURPRISES.
Major renovations go wrong when the planning isn’t done properly upfront. Our pre-construction process exists to make sure you know exactly what you’re getting — the scope, the budget, and the timeline — before a single wall comes down.
PRE-CONSTRUCTION
We walk through your home, understand your brief, and align on budget. Preliminary drawings, design direction, and a clear scope before anything is committed.
DESIGN & DOCUMENTATION
Full design, structural planning, and detailed documentation completed before construction begins. Selections pre-chosen to avoid unnecessary budget creep.
BUILD & HANDOVER
Our team manages every trade, every stage, and every detail. You’ll have a clear point of contact throughout — no surprises, no chasing.
Why do we charge for pre-construction? Because renovation budgets blow out when the scoping isn’t done properly. We front-load that work so the number you agree to is the number you can count on.
If this sounds like the kind of build process you’re after, we would love to hear from you.
SEE OUR WORK
BUILT ABOVE MINIMUM STANDARD. EVERY TIME.
We build above the minimum standard – not just to meet a 7-year warranty period, but to create homes that stand strong for the next 50 years. By going beyond the building code and holding ourselves to a higher standard, we deliver better outcomes for our clients.
WHERE WE WORK
RENOVATION & EXTENSION BUILDERS ACROSS THE HAWKESBURY AND SURROUNDS.
We carry out major renovations and extensions across the Hawkesbury — including Windsor, Richmond, and Kurrajong — as well as the Hills district, Penrith, and the lower Blue Mountains including Glenbrook, Springwood, and Blaxland. We understand the planning requirements, the block types, and the character of homes across all of these areas.
GET IN TOUCH
LET'S TALK ABOUT YOUR CUSTOM DREAM BUILD
The first conversation is free and there’s no obligation. Tell us about your block, your ideas and what you’re hoping to build and we’ll give you an honest picture of what’s possible.
0414 199 754 | info@jmarbuilding.com.au | Hawkesbury, NSW
OTHER SERVICES
CUSTOM BUILT HOMES
Designed around your block, your family, and the life you want to live in it. Whether it’s acreage in the Hawkesbury, a hillside in the lower Blue Mountains, or a lot in the Hills – your home starts with your brief, not our catalogue.
KNOCKDOWN REBUILD
You don’t have to leave the street you love to get the home you want. At JMAR Building Co, we manage the entire process from demolition right through to handover. You can start completely fresh without leaving the place you call home.
SECOND STOREY ADDITIONS
More space, without the upheaval of moving, this is perfect for families who love where they live and want to grow into it. A second storey addition gives you the extra space, built properly into the existing structure so the whole house feels like it was always meant to be that way.