Stanmore Home Extension Builder — Live In, Build On
Buildana extends homes across Stanmore 2048 while you stay in place. 1880s–1920s-era structure, Inner West Council rules, weatherproofing during build — all managed locally from Fairfield.
HIA Member
MBA NSW0476 300 300Quick Answer
A home extension in Stanmore costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, Inner West Council approvals, and construction under one fixed-price contract.
Extending Homes in Stanmore
A home extension in Stanmore is restoration-suburb work. It is one of the inner west's great enclaves of intact Victorian terraces — 1880s to 1920s stock on 150 to 400m² blocks under conservation areas covering most streets — and the people here tend to be restorers, so the addition is built backwards with craft to match the standard they hold the front of the house to.
Party walls set the method, the Victorian fabric gets licensed lead and asbestos handling, and the old footings are checked where the new work ties in. A rear rework opened to the courtyard, sometimes with an attic level in the roof form, is the natural move.
At a $1.9M to $3.0M median, an addition beats trading out of a village-scale pocket this quietly premium — the station and the calm are the draw, and building keeps both.
We build these fixed-price, licence HBL 487805C. Get our extension scope, with the sequencing planned, before you commit.
Buildana manages the complete home extension process in Stanmore — 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 Stanmore from $150K
- Inner West Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M — structural engineering included
- 1880s–1920s-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Stanmore (T2, in suburb) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
The restoration suburb grows
Stanmore's terraces extend backwards with craft — kitchen-living opened up, attic levels inside the roof form — with the quiet restoration premium rewarding work done exactly.
The station and village scale hold every metre you add.
Victorian fabric handled
Lead and asbestos come out under licence, and party walls are assessed before any structural move.
The old footings are checked where the addition ties in, and the lot is costed up front.
Home extension builder in Stanmore — key facts
- Suburb
- Stanmore, NSW 2048
- Council / LGA
- Inner West Council (Inner West)
- Primary zoning
- R1/R2 General/Low
- Typical lot size
- 150–400m²
- Soil class
- M
- Median house price
- $1.9M–$3.0M
- Home era
- 1880s–1920s
- 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.
How It Works
From First Call to Final Key
Free consultation at your Stanmore home. We inspect the existing structure, check Inner West Council's controls, measure available space, and discuss what you need.
⏱Two design moves are usually on the table: match the existing house so the extension reads as original, or contrast with it so the new section is clearly modern. Both work — choice is aesthetic, and we'll show 3D renders of both before you commit.
⏱CDC (10–15 business days) or DA through Inner West Council depending on scope. Structural engineering, BASIX, and all documentation prepared and lodged.
⏱Construction phase connects new to existing — footings, frame, roof tie-in, waterproofing at junction, internal fit-out and external finish. Staged works minimise disruption to your daily routine in Stanmore.
⏱Final inspection focuses on the integration: paint blend, flooring transitions, ceiling height, junction waterproofing, sound transmission. The extension shouldn't feel bolted on — it should feel like the house was always meant to be this size.
⏱Quality Promise
We extend Stanmore homes with a structural engineer on every job. Second storey, rear addition, multi-room — engineered and priced upfront.
Cost Guide
| Item | Estimated Range |
|---|---|
| Adding a master suite (1880s–1920s Stanmore home) | $140,000 – $300,000 |
| Kitchen/living open-out to backyard | $160,000 – $380,000 |
| Second storey for teenagers/office | $300,000 – $590,000 |
| Extension + bathroom (growing family) | $220,000 – $430,000 |
| Full rear + roof tie-in (entertainer's zone) | $380,000 – $650,000 |
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
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
Extend, Don't Move — Stanmore
Free design consultation for Stanmore 2048. We'll assess your home, design the extension, and provide a fixed-price quote.
Start Your ProjectMore in Stanmore
Other Buildana services in Stanmore
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Stanmore 2048. Inner West Council regulations and local controls are covered on each page.