Gordon Home Extension Builder — Live In, Build On
Buildana extends homes across Gordon 2072 while you stay in place. 1920s–1960s (heavy heritage stock)-era structure, Ku-ring-gai Council rules, weatherproofing during build — all managed locally from Fairfield.
HIA Member
MBA NSW0476 300 300Quick Answer
A home extension in Gordon costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, Ku-ring-gai Council approvals, and construction under one fixed-price contract.
Second-Storey & Rear Additions in Gordon
A home extension in Gordon is heritage work with the luxury of space. The homes are 1920s to 1960s on 800 to 1,400m² estate blocks, and that much land changes the whole conversation — the conserved frontage stays exactly as the street knows it, and the wing goes in behind with the kind of room only Ku-ring-gai blocks give you.
The order of work matters here. I check the heritage position before a line is drawn, because getting that wrong at the design stage costs months. Pre-war fabric carries lead paint as well as asbestos, both handled as licensed processes, and the finished wing is built to the standard a $2.8M-plus street quietly demands.
At that median, extending beats the punishing cost of upsizing inside the same school catchments — the blocks already hold the room, so it is a question of building well rather than buying bigger.
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 Gordon — 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 Gordon from $150K
- Ku-ring-gai Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- Class M soil — structural engineering included
- 1920s–1960s (heavy heritage stock)-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Gordon station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Behind the heritage, room to be generous
Gordon's 800 to 1,400m² blocks give a wing room few suburbs can match — generous living, extra bedrooms and a real garden connection built behind the conserved frontage, invisible from the heritage street.
At this median the finish is not negotiable, so the wing is built to the standard the market expects.
Heritage and fabric handled first
The heritage position is settled before design, so the approval path is clear before you spend on drawings.
On this pre-war stock the lead paint sits with the asbestos, both removed under licence and costed into the estate-grade job from day one.
Home extension builder in Gordon — key facts
- Suburb
- Gordon, NSW 2072
- Council / LGA
- Ku-ring-gai Council (Ku-ring-gai)
- Primary zoning
- R2 Low Density
- Typical lot size
- 800–1,400m²
- Soil class
- Class M
- Median house price
- $2.8M–$4.2M
- Home era
- 1920s–1960s
- 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 (1920s–1960s (heavy heritage stock) Gordon home) | $170,000 – $360,000 |
| Kitchen/living open-out to backyard | $190,000 – $450,000 |
| Second storey for teenagers/office | $360,000 – $700,000 |
| Extension + bathroom (growing family) | $260,000 – $510,000 |
| Full rear + roof tie-in (entertainer's zone) | $450,000 – $770,000 |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
How It Works
From First Call to Final Key
On-site assessment of your 1920s–1960s (heavy heritage stock)-era home in Gordon. We check structural condition, block dimensions (800–1,400m²), setback availability, and Ku-ring-gai 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 Ku-ring-gai 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 Gordon 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
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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 — Gordon
Free design consultation for Gordon 2072. We'll assess your home, design the extension, and provide a fixed-price quote.
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Other Buildana services in Gordon
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Gordon 2072. Ku-ring-gai Council regulations and local controls are covered on each page.