Licensed Home Extension Builder Georges Heights
NSW licensed extension specialist. Georges Heights 2088 extensions on 1900s–1950s + restored military buildings-era homes require structural sign-off, Class M footings, and matched connection — we engineer and document properly.
HIA Member
MBA NSW0476 300 300Quick Answer
A home extension in Georges Heights costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, Mosman Council approvals, and construction under one fixed-price contract.
Georges Heights Home Extensions — Fixed Price
A home extension in Georges Heights depends heavily on what you own, because the ridge carries three quite different kinds of building. Heritage cottages and military-era structures extend conservation-first, keeping the protected fabric; the contemporary homes take freer, more generous wings. So the first job is reading the property, not the postcode.
Either way the ground is the same story: sandstone ridge, read by geotech wherever the structure changes. The older fabric gets licensed lead and asbestos handling, and on the military-precinct streets the heritage position is checked before anything is drawn.
At a $4.5M to $8.5M median, with the elevation and the national-park boundary carrying the standing, a wing done to the ridge's standard is the natural play.
We build these fixed-price, licence HBL 487805C. Get our extension scope, with the heritage position checked, before you commit.
Buildana manages the complete home extension process in Georges Heights — 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 Georges Heights from $150K
- Mosman Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M — structural engineering included
- 1900s–1950s + restored military buildings-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near North Sydney (5 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Read per property
Georges Heights mixes heritage cottages, military-era buildings and contemporary homes, so the wing is designed to each — conservation-first behind the protected fabric, or freely on the modern stock.
The ridge elevation and the park boundary carry the standing whichever type you own.
Ground and fabric handled
The sandstone ridge is read by geotech wherever the structure changes.
Lead paint joins asbestos in the licensed processes on the older fabric, and all of it is priced into the job from the outset.
Home extension builder in Georges Heights — key facts
- Suburb
- Georges Heights, NSW 2088
- Council / LGA
- Mosman Council (Mosman)
- Primary zoning
- R2 Low Density
- Typical lot size
- 500–1,000m²
- Soil class
- M
- Median house price
- $4.5M–$8.5M
- Home era
- 1900s–1950s + restored military buildings
- 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
We assess your Georges Heights home — existing structure, block size (500–1,000m²), R2 Low Density zoning, setbacks, FSR, and your space requirements. You'll know what's achievable before spending on detailed design.
⏱Design phase covers the extension layout, junction with existing structure, window and door placement, and external finish to match your Georges Heights home's streetscape. Multiple design options presented.
⏱Documentation pack covers structural engineering for the new footings sized to match existing depths on Class M soil, BASIX 2025 compliance, shadow diagrams to neighbours' POS, hydraulic, and detailed sections through the wall-tie junction. Approval-grade, not concept-grade.
⏱Fixed-price construction of your extension. New footings engineered for Class M soil, structural connection to existing home, frame, fit-out, and finishes.
⏱Handover documentation covers the new work specifically — OC for the extension, structural certs, BASIX certificate updates, and warranty for the new section plus the junction detailing. Existing house remains under whatever warranty position applied before.
⏱Quality Promise
Buildana's Georges Heights home extension process: assess the existing structure, design the addition, approve, build. Fixed price throughout.
Cost Guide
| Item | Estimated Range |
|---|---|
| Adding a master suite (1900s–1950s + restored military buildings Georges Heights home) | $180,000 – $380,000 |
| Kitchen/living open-out to backyard | $200,000 – $470,000 |
| Second storey for teenagers/office | $380,000 – $740,000 |
| Extension + bathroom (growing family) | $270,000 – $540,000 |
| Full rear + roof tie-in (entertainer's zone) | $470,000 – $810,000 |
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 April 2026
Extend, Don't Move — Georges Heights
Free design consultation for Georges Heights 2088. We'll assess your home, design the extension, and provide a fixed-price quote.
Start Your ProjectMore in Georges Heights
Other Buildana services in Georges Heights
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Georges Heights 2088. Mosman Council regulations and local controls are covered on each page.