Buildana builds custom homes across 28+ Sydney LGAs — from Western Sydney growth corridors through to the Inner West, Eastern Suburbs, Lower and Upper North Shore, and the Northern Beaches. We don't do off-the-shelf project home plans dressed up as 'custom'. Every brief starts with a feasibility check on your actual block — soil class, slope, easements, overlays, neighbouring shadow lines — before any concept design. That keeps the design realistic against what council will actually approve and what the build can actually cost. The result: fewer variations, fewer surprises, and a fixed-scope contract that holds together from CC through to handover.
Scope-wise, a Buildana custom home covers everything from the initial site analysis and design brief through to DA or CDC lodgement, structural and hydraulic engineering, BASIX, all trades, internal finishes, landscaping interface and final occupation certificate. We work in single and double storey, splits, raked-ceiling open plans, courtyard layouts, and acreage builds in suburbs like Horsley Park or Cecil Park. We don't push a fixed range of facades — your home is drawn for your block from the ground up.
Thinking about your block?
Free 30-minute feasibility call — we'll tell you if the numbers stack before you spend a dollar on plans.
Every job starts with site investigation, geotech, contour survey and council overlay check. The number you sign on day one is the number we hold to. No 'PC sums to be confirmed' games.
In-house design + build
Architects, drafters, estimators and project managers under one roof. Design decisions are tested against constructability and cost in the same week, not bounced between three external consultants over three months.
Fixed-price contracts, itemised inclusions
Inclusions are listed, not described as 'allowances'. Tile, tap, cabinetry, joinery hardware, flooring and electrical points are all specified before contract — that's how variations stay near zero.
Council-fluent across 28+ LGAs
Buildana has lodged applications across every metropolitan Sydney council — from Fairfield and Liverpool in the south-west to Mosman and Woollahra on the harbour, Ku-ring-gai and Hornsby on the Upper North Shore, and Northern Beaches up to Palm Beach. We know each council's DCP quirks, processing timelines, and the pre-DA conversations worth having.
How the process runs
Realistic timeline for a Buildana custom home: 2–3 weeks feasibility and concept, 4–6 weeks design development and documentation, 8–14 weeks DA assessment (or 10–15 business days CDC where eligible), 1–2 weeks Construction Certificate, then 8–12 months on the ground depending on size and complexity. Single-storey 200m² builds at the lower end; double-storey 350m²+ on tighter sites at the higher end. Through construction you get a single project manager as your point of contact, fortnightly site meetings, weekly written progress updates, and a Buildertrend-tracked variation log so nothing slips off the radar.
Custom Home Builder — scope at a glance
Typical build cost (Western Sydney 2026)
$3,200 – $4,500 / m²
Typical gross size
180m² – 420m²
Contract type
HIA fixed-price design & construct
Approval pathways
CDC (15 days) or DA (40–90 days)
Design to handover
12 – 20 months
Council coverage
Bayside, Blacktown, Burwood, Camden, Campbelltown, Canada Bay, Cumberland, Fairfield, Georges River, Hornsby, Hunters Hill, Inner West, Ku-ring-gai, Lane Cove, Liverpool, Mosman, North Sydney, Northern Beaches, Parramatta, Penrith, Randwick, Ryde, Strathfield, Sutherland Shire, The Hills, Waverley, Willoughby, Woollahra
Warranty
6-year statutory + 2-year defects liability
Insurance
HBCF, public liability, contract works
The detail
What actually shapes the build — and the cost
The differences between a clean fixed-price build and a job that drifts come down to documentation, sequencing and the specifics below. Read through — these are the conversations we have with every client at contract.
01
Designed for your block — not pulled off a catalogue
Project home builders start with a plan and try to make your block fit it.
That's where most cost blowouts come from — the slab is wrong for the soil, the orientation fights the sun, setbacks force a redesign after DA. We go the other way. The first engagement is a site visit, a contour survey, and a geotech bore log. Only once we understand the block do we draw the house. Slope, drainage, solar aspect, neighbour shadow lines, street character, tree preservation orders — all of that sits inside the concept before you ever see a facade render. The practical result is an envelope that fits cleanly inside council's LEP, an engineered slab that isn't overspecced, and a design the planner can actually sign off without exception conditions. That's the difference between a true custom home and a project home with a custom price tag.
02
Fixed-price contracts with genuinely itemised inclusions
The fastest way to lose control of a custom home is to sign a contract full of "provisional sums" and "allowances".
We don't work that way. Tap ware is specified by brand and model. Tiles are locked to size, finish and supplier. Cabinetry hardware has a part number. Electrical points are shown, counted and priced. Joinery schedules carry dimensions, materials, hinge type and soft-close specification. When you sign a Buildana contract you're signing off a scope document roughly three times the size of a typical HIA fixed-price, because that's what removes the contract variation cycle that eats 8–15% of most Sydney builds. The upside flows both ways — we know our margin is protected, and you know the final number before the first tradie arrives.
03
Council-fluent across 28+ Sydney LGAs
Every council runs its own DCP, its own assessment culture, its own informal rules about what gets approved and what gets stuck.
Fairfield is tighter on FSR than most people expect; Liverpool is becoming stricter on stormwater on-site detention; Cumberland has aggressive tree preservation overlays; Canterbury-Bankstown is methodical but slow; Blacktown pushes hard on BASIX and thermal performance; Ku-ring-gai and Mosman stack heritage and tree consents on every job; Northern Beaches stacks bushfire and coastal hazard overlays. We've lodged across every metropolitan Sydney council and we pre-read every block against the council it sits in before design locks. If there's a known trap — a flood planning area, an acid sulfate soil overlay, a heritage conservation area, a riparian setback — it's on the drawing before the first concept goes to you. That's how we hit 90%+ first-time approval rates on DAs.
04
Site supervision — the thing most builders quietly cut
During construction, the single biggest determinant of quality is how often a qualified supervisor actually walks the site.
On a Buildana custom home you get a dedicated project manager assigned at contract signing — not shared across twelve jobs. They're on site a minimum of three times a week through structural stages, plus for every trade handover. That's how you catch framing out of square before the roof goes on, or a plumber rough-in that clashes with the cabinetry layout before tile goes down. Fortnightly site meetings on-site with you if you want them, weekly written progress reports with photos regardless. Every visit logged in Buildertrend so there's a dated, photographic record of every stage for the life of the warranty.
Custom Home Builder across the LGAs we work in
Local controls, soil class, heritage and coastal overlays change the build conversation by suburb. Tap into the LGA you're building in for service-specific pricing, council pathway, and the full suburb list.
The Hills Shire — Annangrove, Baulkham Hills, Beaumont Hills, Bella Vista, Box Hill, Castle Hill, Cattai, Cherrybrook, Dural, Galston, Glenhaven, Glenorie, Kellyville, Kellyville Ridge, Kenthurst, Maraylya, Middle Dural, Nelson, North Kellyville, North Rocks, Norwest, Rouse Hill, Sackville North, South Maroota, The Ponds, West Pennant Hills, Winston Hills and rural Wisemans Ferry. North-west Sydney LGA spanning suburban-core Hills district and semi-rural acreage corridor. Soil profile splits between Wianamatta Shale (suburban core: Baulkham Hills, Castle Hill, Kellyville, Winston Hills, North Rocks) and Hawkesbury Sandstone (rural acreage: Annangrove, Kenthurst, Maraylya, Middle Dural, Glenorie, South Maroota, Cattai) — sandstone rock excavation $30K–$90K on acreage builds. Bushfire-prone is LGA-defining: BAL-29 to BAL-FZ engineering on most rural acreage lots requiring RFS Bushfire Protection Assessment, sprinklered eaves, non-combustible cladding, Asset Protection Zone 10–40m+ siting. Sydney Metro Northwest stations at Bella Vista, Norwest, Kellyville, Rouse Hill drive R3/R4 station-precinct redevelopment yielding apartment-only outcomes around the Norwest Business Park precinct. North-West Growth Centre (Box Hill, North Kellyville, Kellyville Ridge, The Ponds) is master-planned new-release on 300–650m² lots with contemporary brick stock. Hills LEP 2019 sets 700m² duplex minimum on R2; R5 Large Lot Residential and RU2 Rural restrict subdivision and dual occupancy on acreage. AWTS on-site sewer mandatory on RU2 acreage. Cattai/Cattai Creek riparian setbacks 20–60m on Cattai, Maraylya, parts of Annangrove. Tree preservation strict in established estates (Castle Hill, West Pennant Hills, Glenhaven, Cherrybrook). Realistic premium custom $3,000–$4,800/m² suburban-core; $4,200–$6,500/m² premium pocket (Bella Vista/Castle Hill/West Pennant Hills/Glenhaven); $5,500–$8,500/m² acreage with bushfire engineering. Pre-construction 4–7 months suburban; 6–10 months acreage with RFS BPA.
Before Buildana, I spent years in site supervision on both project-home and bespoke residential builds across Western Sydney. What I saw over and over was the same pattern: clients pushed into contracts they didn't understand, variations stacking up, timelines quietly slipping. Buildana exists to run the other direction — site-first design, documentation-heavy contracts, a single point of accountability from first phone call through to 6-year warranty period. If you're talking to builders and something doesn't feel right, bring the quote to us and I'll walk through it line by line. That's a free conversation, not a sales call.
— Oliver Alameri, licensed builder and director, Buildana. See author bio.
Suburbs we build in
Buildana works across 29 Sydney LGAs and 456+ suburbs. Pick a region to expand the list and see local feasibility notes, council process, soil class, and indicative cost ranges relevant to your block.
What's the price difference between a project home and a true custom build?
A genuine custom home in Western Sydney usually runs $3,200–$4,500 per m² depending on finishes, structure, and site complexity. Off-the-shelf project homes can advertise from $1,800/m² but those numbers exclude site costs, upgrades, and the inclusions most owners actually want. By the time a project home is finished to comparable spec, the gap is often 10–20%, not the 50% the brochure suggested.
Do I need a separate architect, or does Buildana do the design?
Buildana handles the full design and build under one contract. You can bring an external architect's drawings if you have them — we'll work with that — but most clients prefer the single-point accountability and faster decisions of in-house design. Our team is registered with the Building Designers Association and has lodged hundreds of designs across Sydney councils.
Can you build on a sloping or difficult site?
Yes. Sloping sites, narrow lots, irregular boundaries, easements through the build envelope and high-bushfire-risk land are all routine. We commission a contour survey and geotech early so the structural strategy — split level, suspended slab, piered footings — is locked in before you sign anything.
How do you handle changes mid-build?
Variations get priced and signed off in writing before any work starts on them. Owners get a running total via the project portal so the impact on contract sum and timeline is visible the moment a change is requested. No mystery invoices at PC stage.
What's included in your fixed price?
Everything in the documented scope — site preparation, all structural and finishes trades, joinery, electrical, plumbing, tiling, flooring, paint, landscaping interface, statutory inspections, certifier fees and Home Building Compensation Fund cover. Excluded items (typically Council headworks, S7.11 contributions, NBN connection if not already on site) are listed line by line in the contract, not buried in notes.
Ready to talk through your block?
Free, no-obligation feasibility — fixed-scope quote within 7 days.
Buildana works across all 28 Sydney metropolitan LGAs. Pick the council area your block sits in for a deep-dive on local soil, heritage controls, DCP rules, and realistic cost ranges.
