Home Extension Builder Belfield — Approved in 60 Days
Belfield 2191 extensions with tight approval timelines. CDC where eligible (~15 days), DA via Strathfield Council in 40–60 days. Construction 12–24 weeks depending on scope.
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MBA NSW0476 300 300Quick Answer
A home extension in Belfield costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, Strathfield Council approvals, and construction under one fixed-price contract.
Home Extension Builder in Belfield
A home extension in Belfield grows the established family home — Federation and inter-war stock on generous blocks at the district's more accessible entry, where the wing shifts liveability meaningfully.
The pre-war fabric gets licensed handling, the junctions are engineered, and the quiet residential streets stay themselves.
At the $1.8M to $2.6M median, the wing beats the friction of upsizing in the Inner West.
We build these fixed-price, licence HBL 487805C. Ask us to measure what your block can hold.
Buildana manages the complete home extension process in Belfield — from design consultation and structural engineering through to DA or CDC approval, and fixed-price construction to handover. Extend your home without the stress.
Read our Home Extension Cost Guide 2026 or explore extension approval pathways in NSW.
- Home extensions in Belfield from $150K
- Strathfield Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M — structural engineering included
- 1900s–1940s Federation mansion/Californian Bungalow heritage + inter-war Tudor + 2010s+ R3/R4 redevelopment around Strathfield/Homebush stations-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Strathfield (2 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Accessible entry, real room
Belfield's more accessible entry makes the wing genuinely additive — second living, bedrooms, an opened kitchen — on blocks with the depth to hold them.
The quiet residential streets reward staying and building.
Era and ground handled
Lead paint joins asbestos on the pre-war fabric, and the junctions are engineered where new meets old.
Both are in the quote up front.
Home extension builder in Belfield — key facts
- Suburb
- Belfield, NSW 2191
- Council / LGA
- Strathfield Council (Strathfield Council)
- Primary zoning
- R2 Low Density
- Typical lot size
- 550–1,000m² (premium Federation/inter-war heritage estate predominant); 250–500m² (Homebush/Homebush West/Strathfield South tighter terraces)
- Soil class
- M
- Median house price
- $3.0M–$5.5M heritage estate; $2.4M–$3.5M Homebush/Strathfield South; $1.8M–$2.6M Belfield
- Home era
- 1900s–1940s Federation mansion/Californian Bungalow heritage + inter-war Tudor + 2010s+ R3/R4 redevelopment around Strathfield/Homebush stations
- Typical price range
- $150,000 – $600,000+
- Typical timeline
- 6–12 months design to handover
- Approval pathway
- CDC for most rear extensions, DA for second-storey
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.
Cost Guide
| Item | Estimated Range |
|---|---|
| Adding a master suite (1900s–1940s Federation mansion/Californian Bungalow heritage + inter-war Tudor + 2010s+ R3/R4 redevelopment around Strathfield/Homebush stations Belfield home) | $130,000 – $280,000 |
| Kitchen/living open-out to backyard | $150,000 – $350,000 |
| Second storey for teenagers/office | $280,000 – $550,000 |
| Extension + bathroom (growing family) | $200,000 – $400,000 |
| Full rear + roof tie-in (entertainer's zone) | $350,000 – $600,000 |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
How It Works
From First Call to Final Key
Extension feasibility comes down to two things: what the existing structure can carry, and what Strathfield Council will let you build. We assess both at the consultation — no point designing for a second storey if the slab can't take the load.
⏱Extension designed to integrate with your existing Belfield home — matching roof lines, materials, and flow between old and new sections. Floor plans, elevations, and 3D renders.
⏱All approval documentation prepared: structural drawings, BASIX, shadow analysis, stormwater, and statement of environmental effects (if DA). Lodged and managed through to Construction Certificate.
⏱Extension construction takes 3–6 months on average. Footings excavated and poured to match existing depth on Class M soil, frame stand, roof tie-in (most weather-critical phase), lock-up, then internal fit-out at the same standard as the existing house.
⏱Defect-free inspection, OC issued, 6-year warranty on all new work. Junction between old and new sections waterproofed and warranted.
⏱Our Team
Oliver Alameri
Founder / Director / Builder · MPropDev · PhD Student
Ahmad Alameri
Accounts Manager
Claire Wendell
Project Manager
Estimate Your Build Cost
Use our free calculator to get an instant cost estimate for your project
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 April 2026
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Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Belfield 2191. Strathfield Council regulations and local controls are covered on each page.