Home Extension Russell Lea — Design, Approval, Structural, Build
Full-service extensions in Russell Lea 2046: structural survey of existing 1900s–1940s home, design, City of Canada Bay Council approval, engineering, weatherproofed construction, matched finish to original dwelling.
HIA Member
MBA NSW0476 300 300Quick Answer
A home extension in Russell Lea costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, City of Canada Bay Council approvals, and construction under one fixed-price contract.
Home Extension Builder in Russell Lea
A home extension in Russell Lea suits a tightly held character pocket people rarely leave. This inland suburb between Five Dock and Drummoyne runs Federation cottages, inter-war homes and post-war stock on 450 to 800m² blocks, and at a $2.2M to $4M median the depth of the blocks gives most owners a genuine choice between building out and building up.
Method follows the era. Early double brick carries a first-floor addition on its walls, while post-war stock is better grown at ground level. Heritage Conservation Areas cover several streets, so those frontages get examined while rear work generally passes, and the Wianamatta Shale soil behaves so footings stay routine. It is a quiet, family-held pocket where extending to stay is the norm.
What I would check first on your Russell Lea house: the era of the walls, any heritage pocket, and the rear yard depth. Those settle the direction.
We build these fixed-price, licence HBL 487805C. Bring us your address and we will map the options.
Buildana manages the complete home extension process in Russell Lea — 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 Russell Lea from $150K
- City of Canada Bay Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M–H — structural engineering included
- 1900s–1940s-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Drummoyne ferry (1.5 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
A pocket people keep
This inland suburb between Five Dock and Drummoyne runs Federation cottages, inter-war homes and post-war stock on 450 to 800m² blocks.
At a $2.2M to $4M median, the depth of the blocks gives most owners a genuine choice between building out and building up.
Era and heritage
Early double brick carries a first-floor addition on its walls, while post-war stock does better with a ground-level addition.
Heritage Conservation Areas cover several streets, so those frontages get examined while rear work generally passes, and the Wianamatta Shale soil keeps footings routine.
Home extension builder in Russell Lea — key facts
- Suburb
- Russell Lea, NSW 2046
- Council / LGA
- City of Canada Bay Council (City of Canada Bay)
- Primary zoning
- R2 Low
- Typical lot size
- 450–800m²
- Soil class
- M–H
- Median house price
- $2.2M–$4M
- Home era
- 1900s–1940s
- 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
Extension feasibility comes down to two things: what the existing structure can carry, and what City of Canada Bay Council will let you build. We assess both at the consultation — no point designing for a second storey if the slab can't take the load.
⏱Extension designed to integrate with your existing Russell Lea home — matching roof lines, materials, and flow between old and new sections. Floor plans, elevations, and 3D renders.
⏱All approval documentation prepared: structural drawings, BASIX, shadow analysis, stormwater, and statement of environmental effects (if DA). Lodged and managed through to Construction Certificate.
⏱Extension construction takes 3–6 months on average. Footings excavated and poured to match existing depth on Class M–H soil, frame stand, roof tie-in (most weather-critical phase), lock-up, then internal fit-out at the same standard as the existing house.
⏱Defect-free inspection, OC issued, 6-year warranty on all new work. Junction between old and new sections waterproofed and warranted. Maintenance guide covers care of new and existing areas.
⏱Quality Promise
Buildana's Russell Lea home extension process: assess the existing structure, design the addition, approve, build. Fixed price throughout.
Cost Guide
| Item | Estimated Range |
|---|---|
| Single-room addition (bedroom/study) | $59,000 – $140,000 |
| Kitchen/living extension | $150,000 – $340,000 |
| Master suite + ensuite addition | $130,000 – $270,000 |
| Second storey (full or partial) | $270,000 – $540,000 |
| Multi-room ground floor wrap | $340,000 – $590,000 |
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
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
Extend, Don't Move — Russell Lea
Free design consultation for Russell Lea 2046. We'll assess your home, design the extension, and provide a fixed-price quote.
Start Your ProjectMore in Russell Lea
Other Buildana services in Russell Lea
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Russell Lea 2046. City of Canada Bay Council regulations and local controls are covered on each page.