Licensed Custom Home Builder Seven Hills — Design & Construct
NSW licensed builder (Oliver Alameri) delivering fixed-price custom homes across Seven Hills 2147. Engineered slab for Class H soil, BASIX 2025, 6-year structural warranty.
HIA Member
MBA NSW0476 300 300Quick Answer
A custom home in Seven Hills costs $450,000–$1,200,000+ depending on size and specification. Single storey from $450K, double storey from $650K. Buildana manages design, Blacktown City Council approvals and fixed-price construction.
Custom Home Builder in Seven Hills
A custom home in Seven Hills is a family knockdown-and-build with a duplex option, on a generous block near two motorways. This family-friendly Blacktown suburb runs 1960s to 1980s housing on 550 to 700m2 R2 lots, and at a $900K to $1.15M median a designed replacement is a strong family play, while a well-sized lot may carry a duplex. The station and the M2 and M7 interchange keep it well connected.
This is Class H reactive clay, so footings are engineered to suit the ground off geotech and the slab is detailed for the movement, which matters more here than on shale suburbs. The generous blocks open single or double-storey family designs with a real backyard, and where a lot clears the 600m2 dual-occupancy minimum a duplex is worth checking. Where older homes carry fibro a licensed asbestos strip-out comes first.
What I would check first on your Seven Hills block: the Class H reactive-clay footing design, whether a duplex beats a single home, and any asbestos in older stock. Those set the direction.
We build these fixed-price, licence HBL 487805C. Send me the block and I will tell you the best use of it.
Buildana's design-and-construct service covers everything — from initial design brief and land assessment through to council approval and fixed-price construction. One builder, one contract, one point of contact.
Read our Complete Custom Home Guide or explore custom home builds across Sydney.
- Custom homes in Seven Hills from $450K
- Designed for your 550–700m² block
- Blacktown City Council DA and CDC approvals managed
- Seven Hills zoned R2 Low Density
- Single and double storey designs
- Class H soil — engineered slab included
- 6-year structural warranty
- Free consultation — near Seven Hills station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Generous blocks, well connected
This family-friendly Blacktown suburb runs 1960s to 1980s housing on 550 to 700m2 R2 lots near the M2 and M7.
At a $900K to $1.15M median a designed replacement is a strong family play, with a duplex worth checking on the larger lots.
Engineered for Class H clay
This is Class H reactive clay, so footings are engineered off geotech and the slab detailed for the movement.
Where a lot clears the 600m2 dual-occupancy minimum a duplex is worth checking, and older fibro gets a licensed asbestos strip-out first.
Custom home builder in Seven Hills — key facts
- Suburb
- Seven Hills, NSW 2147
- Council / LGA
- Blacktown City Council (Blacktown City)
- Primary zoning
- R2 Low Density
- Typical lot size
- 550–700m²
- Soil class
- Class H
- Median house price
- $900K–$1.15M
- Home era
- 1960s–1980s
- Typical price range
- $450,000 – $1,200,000+
- Typical timeline
- 12–20 months design to handover
- Approval pathway
- CDC fast-track (15 business days) or DA (40–90 days)
Real Project
Custom Two-Storey Home — Seven Hills
300sqm 4-bed two-storey on a 720sqm Seven Hills block. Blacktown Council CDC — 11 business days. Standard R2 setbacks, 0.5 FSR, no DCP complications on this lot. Class M soil.
Completed in 27 weeks. Fixed-price $790,000.
Want a real number for YOUR block — not a generic estimate?
Free site assessment, fixed-price contract, line-itemised quote within 48 hours. No high-pressure sales — just a real builder talking real numbers.
How It Works
From First Call to Final Key
We start at the kerb. Before a single sketch, we stand on your Seven Hills block and work out what the land wants — sun path, slope, views, neighbours, the R2 Low Density envelope we've got to design inside. That walk determines almost every decision that follows.
⏱Design happens in layers. First the plan — where the kitchen is, how the bedrooms stack, what the morning routine looks like. Then the envelope — roof pitch, eave depth, window sizes matched to the Seven Hills climate. Then the finishes. Nothing gets drawn without a reason you can point to.
⏱Documentation is the unglamorous part, but it's where most projects go wrong. Engineering for Class H soil, BASIX 2025, Blacktown City Council drawings, hydraulics, stormwater. We stage it so the certifier approves the first time — not the fourth.
⏱Then we build. Programme in hand, trades booked, material orders placed weeks before they're needed so nothing waits on delivery. Weekly update, monthly milestone walk, defects fixed as we go rather than collected at the end.
⏱Quality Promise
Every Buildana custom home in Seven Hills is designed for your block and built under a fixed-price contract — no surprises, no hidden extras.
Cost Guide
| Item | Estimated Range |
|---|---|
| Standard inclusions package | $420,000 – $650,000 |
| Upgraded inclusions (stone, engineered timber, 2.7m ceilings) | $650,000 – $880,000 |
| Premium finishes (natural stone, bespoke joinery, hydronic heating) | $880,000 – $1,210,000 |
| Luxury bespoke (architect finishes, pool, smart home) | $1,210,000+ |
| BASIX and NCC 2025 compliance | Included |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
Our Team
Oliver Alameri
Founder / Director / Builder · MPropDev · PhD Student
Ahmad Alameri
Accounts Manager
Claire Wendell
Project Manager
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Still got questions? Talk to Oliver directly.
30-min free call — bring your block, your brief, your budget. We'll map out feasibility, timeline, and realistic cost. No sales pitch.
Frequently Asked Questions
Buildana built our granny flat in just 12 weeks. Fast approvals, great communication, and a beautiful final product. Highly recommend.
Fatima Al-Rashid
Liverpool, NSW
We Build Across Sydney
Headquartered in Western Sydney's Fairfield. Active across all 28 metropolitan Sydney LGAs — from Penrith to the Eastern Suburbs, the Hills to the Sutherland Shire.
Last updated: 1 July 2025
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Other Buildana services in Seven Hills
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Seven Hills 2147. Blacktown City Council regulations and local controls are covered on each page.