Home Extension Woollahra — Design, Approval, Structural, Build
Full-service extensions in Woollahra 2025: structural survey of existing 1840s–1920s heritage terraces home, design, Woollahra Municipal Council approval, engineering, weatherproofed construction, matched finish to original dwelling.
HIA Member
MBA NSW0476 300 300Woollahra Home Extensions & Additions
A home extension in Woollahra is terrace craft, and the craft is mostly logistics. The Victorian and Federation stock on 200 to 500m² blocks sits under conservation areas that cover almost every street, so the addition works backwards — the frontage never changes, and the rear is reworked into open living designed to the centimetre.
What makes it hard is the access, not the design. Party walls on both sides, no side lane, and materials that come through the front of the house or over the roof by crane — so the whole build is sequenced on paper before anyone lifts a tool. The 1840s to 1920s fabric gets licensed lead and asbestos handling.
At a $3.5M to $8.0M median, an exact rear build is what the Queen Street village standard pays for — there is no margin for a job that looks improvised.
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 Woollahra — 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 Woollahra from $150K
- Woollahra Municipal Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M — structural engineering included
- 1840s–1920s heritage terraces-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Edgecliff (1.5 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Backwards, exactly
Woollahra's terraces and semis extend backwards — kitchen-living opened to the courtyard, occasionally an attic level worked within the roof form — designed to the centimetre under the village conservation areas.
The Queen Street standard rewards the work done exactly and notices when it is not.
Terrace logistics, planned
Party walls both sides, no side access, materials craned in — the whole sequence is planned before anyone lifts a tool.
The 1840s to 1920s fabric is handled by licensed process, and all of it is priced into the job from the outset.
Home extension builder in Woollahra — key facts
- Suburb
- Woollahra, NSW 2025
- Council / LGA
- Woollahra Municipal Council (Woollahra)
- Primary zoning
- R2 Low
- Typical lot size
- 200–500m²
- Soil class
- M
- Median house price
- $3.5M–$8.0M
- Home era
- 1840s–1920s heritage terraces
- 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.
Quality Promise
Woollahra home extension specialists: we work on your home while you live in it, weatherproof the site nightly, finish clean.
How It Works
From First Call to Final Key
On-site assessment of your 1840s–1920s heritage terraces-era home in Woollahra. We check structural condition, block dimensions (200–500m²), setback availability, and Woollahra Municipal Council's DCP requirements.
⏱Designing an extension is half about the new space and half about how it joins the old one. Doorway position, ceiling height transition, floor level matching, light wells — the junction makes or breaks how the finished home feels.
⏱We lodge your extension approval — CDC for eligible designs or DA through Woollahra Municipal Council. Full documentation including structural engineering for Class M soil, BASIX, and shadow diagrams.
⏱For ground-floor rear extensions you usually stay in the house during the build, with temporary weatherproofing at the junction wall until the new section is locked up. Second-storey additions need a 4–8 week relocation during the roof-off and frame-up phase.
⏱Final inspection, Occupation Certificate, 6-year structural warranty. Your Woollahra home now has the space your family needs.
⏱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
Explore Related Topics
Woollahra Extension — Free Consultation
Free design consultation for Woollahra 2025. We'll assess your home, design the extension, and provide a fixed-price quote.
Start Your ProjectMore in Woollahra
Other Buildana services in Woollahra
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Woollahra 2025. Woollahra Municipal Council regulations and local controls are covered on each page.