Home Extension Builder Lane Cove — Approved in 60 Days
Lane Cove 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.
HIA Member
MBA NSW0476 300 300Second-Storey & Rear Additions in Lane Cove
A home extension in Lane Cove holds a detached house in a village the apartment market keeps densifying. R3 medium-density runs through the village and B4 lines the high street, so the Federation cottages and inter-war homes on the 400 to 700m² R2 side streets are increasingly the scarce stock. At a $2.4M to $4M median, extending the house you own beats trading into a unit.
Method follows the era and the street. Early double brick carries a first-floor addition, post-war stock extends better at ground level, and Heritage Conservation Areas over several side streets mean those frontages get examined while rear work generally passes. The sandstone ridge means rock can turn up in the dig, so we test before pricing. The Plaza and Longueville Road keep the village genuinely liveable.
What I would check first on your Lane Cove house: the era of the walls, any heritage pocket, and the sandstone under a dig. Those decide the direction and budget.
We build these fixed-price, licence HBL 487805C. Get us to read your block and its zoning first.
Buildana manages the complete home extension process in Lane Cove — 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 Lane Cove from $150K
- Lane Cove Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M — structural engineering included
- 1900s–1960s + apartments-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near St Leonards (2.5 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Scarce detached stock
R3 medium-density threads through the village and B4 lines the high street, leaving the Federation cottages and inter-war homes on the 400 to 700m² R2 side streets as the scarce stock.
At a $2.4M to $4M median, extending the house you already own beats trading into a unit.
Era, heritage and rock
Early double brick carries a first-floor addition, post-war stock extends better at ground level, and heritage areas over several side streets mean those frontages get examined while rear work generally passes.
The sandstone ridge means rock can surface in the dig, so we test before pricing.
Home extension builder in Lane Cove — key facts
- Suburb
- Lane Cove, NSW 2066
- Council / LGA
- Lane Cove Council (Lane Cove)
- Primary zoning
- R3
- Typical lot size
- 400–700m²
- Soil class
- M
- Median house price
- $2.4M–$4.0M
- Home era
- 1900s–1960s + apartments
- 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
We extend Lane Cove homes with a structural engineer on every job. Second storey, rear addition, multi-room — engineered and priced upfront.
How It Works
From First Call to Final Key
Everything that has to be right before we touch the ground. On-site assessment of your 1900s–1960s + apartments-era home in Lane Cove. We check structural condition, block dimensions (400–700m²), setback availability, and Lane Cove Council's DCP requirements. Written feasibility and cost estimate provided. 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.
⏱The Lane Cove construction phase. Fixed price, programmed, supervised. We lodge your extension approval — CDC for eligible designs or DA through Lane Cove Council. Full documentation including structural engineering for Class M soil, BASIX, and shadow diagrams. CC issued before works start. 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.
⏱The job isn't done when the site's clean; it's done when you have keys, certificates and warranties. Final inspection, Occupation Certificate, 6-year structural warranty. Your Lane Cove 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
Lane Cove Extension — Free Consultation
Free design consultation for Lane Cove 2066. We'll assess your home, design the extension, and provide a fixed-price quote.
Start Your ProjectMore in Lane Cove
Other Buildana services in Lane Cove
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Lane Cove 2066. Lane Cove Council regulations and local controls are covered on each page.