Home Extension Builder Longueville — Approved in 60 Days
Longueville 2066 extensions with tight approval timelines. CDC where eligible (~15 days), DA via Lane Cove Council in 40–60 days. Construction 12–24 weeks depending on scope.
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A home extension in Longueville costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, Lane Cove Council approvals, and construction under one fixed-price contract.
Home Extension Builder in Longueville
A home extension in Longueville is heritage work above the water. The 1880s to 1940s homes on blocks up to 1,400m² sit on a tightly-held peninsula between Tambourine and Woodford Bays, so the wing is built to open the living toward the water while the conserved Victorian and Federation frontage stays exactly as the street knows it.
Homes this old carry a full checklist, and I run all of it up front rather than discovering it later — lead paint and asbestos handled as licensed processes, and the original footings assessed wherever the new wing ties into the old structure. Where the blocks drop toward the bays, the fall is engineered early.
At a $3.5M to $7.5M median, a wing done exactly is simply the peninsula's natural evolution — you keep the address and the water and build the house up to both.
We build these fixed-price, licence HBL 487805C. Get our extension scope, with heritage and fall resolved, before you commit.
Buildana manages the complete home extension process in Longueville — 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 Longueville from $150K
- Lane Cove Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M — structural engineering included
- 1880s–1940s heritage-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Wollstonecraft (4 km, ferry) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
The bays set the design
Longueville's premium is the water, and the wing earns it — conserved Victorian and Federation fabric, generous living opened toward Tambourine and Woodford Bays, on blocks up to 1,400m².
The tightly-held peninsula rewards the work done exactly.
Age demands the full checks
On 1880s to 1940s homes, lead and asbestos are licensed processes and the original footings are assessed where the wing ties in.
The fall is engineered where the blocks drop, and all of it is priced into the job from the outset.
Home extension builder in Longueville — key facts
- Suburb
- Longueville, NSW 2066
- Council / LGA
- Lane Cove Council (Lane Cove)
- Primary zoning
- R2 Low Density
- Typical lot size
- 600–1,400m²
- Soil class
- M
- Median house price
- $3.5M–$7.5M
- Home era
- 1880s–1940s heritage
- 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 |
|---|---|
| Simple rear extension (single wall removal, no roof change) | $115,000 – $260,000 |
| Moderate extension (multiple openings, roof extended) | $260,000 – $490,000 |
| Complex extension (structural steel portals, re-roofing) | $490,000 – $770,000 |
| Second-storey tie-in (existing house re-engineered) | $450,000 – $830,000 |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
How It Works
From First Call to Final Key
The first job on an extension is finding out what you're extending onto. Longueville homes from the 1880s–1940s heritage were built to different standards — we open walls, check footings, verify load paths. The existing house has to carry the new work.
⏱Design follows the existing roof. A bad extension looks like a bolt-on; a good one reads as original. Matched brickwork or contrasting render (whichever the architecture calls for), tied-in roofline, continuous flooring where it should be continuous.
⏱Construction happens while you live in the house. That means weatherproofing every night, staging the works so kitchens and bathrooms don't disappear on the same week, and keeping the site clean of debris that doesn't belong in a family home.
⏱Finish is seamless. Paint match, floor match, roofline match, brick match where possible. The only way to tell the extension is new is the date on the plans.
⏱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
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