SECOND STOREY ADDITIONS – HAWKESBURY, NEPEAN, LOWER BLUE MOUNTAINS & HILLS DISTRICT
MORE SPACE WITHOUT GIVING UP THE HOME OR YARD YOU LOVE.
For families across the Hawkesbury, Hills district, and lower Blue Mountains who’ve outgrown the floor plan but aren’t ready to uproot everything. Going up is often the smartest way to get the space you need — without losing what you’ve already invested in.
IS A SECOND STOREY ADDITION WORTH IT?
THE SPACE YOU NEED - WITHOUT HAVING TO MOVE.
A second storey addition gives you the extra bedrooms, the bathroom, the living area — without reducing your outdoor space or starting a new life somewhere else. For families who love where they live but have simply run out of room, it’s often the most practical and financially sound decision available.
Done properly, a second storey doesn’t feel like an addition — it feels like the house was always meant to be that way. The key is in the planning and the structural integration, which is where experience matters most.
We build second storey additions across the Hawkesbury — including areas like Hobartville and Richmond where the renovation and addition market is strong — as well as the Hills district, Penrith, and the lower Blue Mountains.
IS A SECOND STOREY ADDITION RIGHT FOR YOU?
A SECOND STOREY ADDITION MIGHT BE RIGHT FOR YOUR HOME IF ANY OF THESE SOUND FAMILIAR.
YOU'VE OUTGROWN THE HOUSE BUT YOU LOVE WHERE YOU LIVE
The street is right, the school is right, the community is right — you just need more rooms. Going up lets you stay without compromising on space.
YOU WANT THE EXTRA SPACE WITHOUT LOSING THE BACKYARD
Ground floor extensions eat into your outdoor area. A second storey keeps your yard intact — which matters especially on Hawkesbury and Hills blocks where the outdoor space is part of the appeal.
YOUR FAMILY IS GROWING AND THE CURRENT LAYOUT ISN'T WORKING
More bedrooms, a second bathroom, a dedicated study or retreat — the space your family needs now and in the years ahead, built properly into the existing structure.
YOU WANT IT TO LOOK AND FEEL LIKE IT WAS ALWAYS THERE
A well-planned second storey should be seamless — not an obvious addition. That comes down to the structural work, the roofline, and the detailing, all of which we take seriously.
HOW WE WORK
A PROCESS THAT PROTECTS YOU FROM DAY ONE.
Most builders offer a free quote and work out the detail later – that’s where the variations and budget blowouts come from. Our pre-construction process is designed differently. We do the proper planning work upfront so that the number you agree to is one you can actually count on.
PRE-CONSTRUCTION
Structural assessment, design brief, and budget qualification. We make sure the addition is feasible, affordable, and designed to integrate properly before you commit.
DESIGN & DOCUMENTATION
Full design, structural engineering, and detailed documentation completed before construction begins. Selections are always pre-chosen to avoid unnecessary budget creep.
BUILD & HANDOVER
Our team manages the structural work, trades, and finish — making sure the addition integrates with the existing house and the final result feels intentional throughout your new home.
Why do we charge for pre-construction? Second storey additions are structurally complex. The planning work upfront protects you from discovering structural issues or budget gaps mid-build — when fixing them costs far more.
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 BUILD
SECOND STOREY ADDITIONS ACROSS THE HAWKESBURY AND SURROUNDS.
We build second storey additions across the Hawkesbury — including Hobartville, Windsor, Richmond, and surrounds — as well as the Hills district (Castle Hill, Dural), Penrith, and the lower Blue Mountains including Glenbrook, Springwood, and Blaxland. Hobartville and the broader Richmond area in particular are strong markets for second storey additions and renovations given the local price points and block sizes.
GET IN TOUCH
READY TO TALK ABOUT ADDING A SECOND STOREY?
The first conversation is free and there’s no obligation. Tell us about your home, your family, and what you need more of — and we’ll give you an honest picture of what’s involved and what it’ll take.
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.
RENOVATIONS & EXTENSIONS
For homeowners in the Hills, Hawkesbury, and surrounds who love where they live but know the house needs more – more space, better flow and rooms that actually work for the life they’re living now.
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.