Clareville Duplex Builder — Western Sydney Dual Occupancy
Buildana is a local Northern Beaches duplex builder. We know which Clareville streets support Torrens title subdivision, which suit strata, and what Northern Beaches Council will approve. Free site feasibility.
HIA Member
MBA NSW0476 300 300Quick Answer
A duplex in Clareville costs $750,000–$1,500,000+ for dual occupancy construction. Attached duplex from $750K, detached from $1M. Buildana manages feasibility, Northern Beaches Council approvals, construction and subdivision under one fixed-price contract.
Duplex Builder in Clareville
A duplex in Clareville is rarely the play, because this premium calm-water Pittwater suburb favours a single home despite the large blocks. The Federation, mid-century and contemporary stock sits on 600 to 1,500m2 blocks with substantial sandstone fall to Clareville Beach, and although the land clears the Northern Beaches minimum, BAL-19 to Flame Zone on bushland-fringe lots and deep rock excavation mean a duplex doubles the site cost. At a $3.5M to $10M-plus waterfront market a single residence usually returns more.
The sandstone fall means deep rock, direct waterfront carries a Foreshore Building Line, and both dwellings would carry the bushfire spec where a BAL applies. I would rather give you the honest read than push the wrong product. Where the existing home carries fibro a licensed asbestos strip-out comes first.
What I would check first on your Clareville block: the deep rock and sandstone fall, the BAL rating, and whether a single premium home is the clear best use. That decides the direction.
We build these fixed-price, licence HBL 487805C. Send me the address and I will tell you honestly what the block suits.
Buildana manages the full duplex development process in Clareville — from feasibility assessment and architectural design through to DA or CDC approval, and fixed-price construction to dual handover. One builder, one contract, two homes.
Read our Complete Duplex Building Guide or explore duplex developments across Sydney.
- Dual occupancy in Clareville from $750K
- Northern Beaches Council DA and CDC approvals managed
- R2 and R3 zones — established dual occ. provisions
- Minimum lot size 600m² (Manly/Pittwater legacy R2) / 700m² (Warringah legacy R2) / varies by precinct under Northern Beaches LEP in Clareville
- Hawkesbury Sandstone — engineered dual-slab design included
- Strata or Torrens title subdivision available
- 6-year structural warranty per dwelling
- Free feasibility check — near B-Line bus to CBD (Avalon interchange) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Premium Pittwater, single-home
The stock sits on 600 to 1,500m2 blocks with substantial sandstone fall to Clareville Beach, so the land clears the Northern Beaches minimum.
BAL ratings on bushland-fringe lots and deep rock mean a duplex doubles the site cost, at a $3.5M to $10M-plus waterfront market.
Rock, BAL and foreshore
The sandstone fall means deep rock excavation, and direct waterfront carries a Foreshore Building Line.
Both dwellings would carry the bushfire spec where a BAL applies, with older fibro stripped under licence first.
Duplex builder in Clareville — key facts
- Suburb
- Clareville, NSW 2107
- Council / LGA
- Northern Beaches Council (Northern Beaches)
- Primary zoning
- R2 Low
- Typical lot size
- 600–1,500m²
- Soil class
- Hawkesbury Sandstone
- Median house price
- $3.5M–$10M+ (waterfront)
- Home era
- 1920s–1970s + premium contemporary
- Typical price range
- $750,000 – $1,500,000+
- Typical timeline
- 14–22 months design to handover
- Approval pathway
- CDC for compliant dual-occupancy, else DA
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
A duplex is really a feasibility problem wearing a construction outfit. Before anything else, we verify your Clareville block against Northern Beaches Council's LEP — lot size, frontage, FSR, landscape area. If it doesn't stack up, you find out in a week, not after 3 months of design.
⏱Design runs dual from day one. Two dwellings, one coherent streetscape, party-wall acoustics and fire rating built into the structure rather than bolted on. The plan accommodates R2 Low zoning without looking like two mismatched houses sharing a fence.
⏱Approval and construction get sequenced together. Slab pours are choreographed so the trades show up once, frame up both sides, and keep rolling. Two separate meters, two separate services, but one crew, one programme.
⏱Handover is dual. Both dwellings walked at the same time, both OCs in the same issue, both titles subdivided before settlement. You leave the final inspection with the option to live in one and rent the other, or to sell both.
⏱Quality Promise
Clareville dual occupancy construction: feasibility assessment first, then fixed-price build to dual handover. No surprises.
Cost Guide
| Item | Estimated Range |
|---|---|
| Standard attached duplex — base spec | $920,000 – $1,160,000 |
| Upgraded finishes (stone, ducted A/C, upgraded kitchens) | $1,160,000 – $1,460,000 |
| Premium duplex (architect design, hydronic, landscape package) | $1,460,000 – $1,890,000 |
| Luxury detached dual occupancy | $1,890,000+ |
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
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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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Clareville Dual Occupancy — Free Feasibility
Free duplex feasibility assessment for Clareville 2107. We'll check your block, estimate yield, and provide a fixed-price budget.
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Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Clareville 2107. Northern Beaches Council regulations and local controls are covered on each page.