Home Extension Lilyfield — Design, Approval, Structural, Build
Full-service extensions in Lilyfield 2040: structural survey of existing 1880s–1920s home, design, Inner West Council approval, engineering, weatherproofed construction, matched finish to original dwelling.
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MBA NSW0476 300 300Quick Answer
A home extension in Lilyfield costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, Inner West Council approvals, and construction under one fixed-price contract.
Second-Storey & Rear Additions in Lilyfield
A home extension in Lilyfield sits nicely between two things people want: the village and the water. The 1880s to 1920s cottages on 150 to 400m² blocks are within reach of the light rail one way and the Iron Cove foreshore the other, so the addition works backwards with craft and, where the block allows, opens the living toward the green.
On the conservation streets the frontage is kept, the party walls on the attached cottages are assessed before anything ties in, and the oldest fabric gets licensed lead and asbestos handling. Light drawn deep into the narrow floorplate is where these homes gain the most.
At a $2.0M to $3.5M median, an addition beats trading out of the light-rail orbit — you keep the walk to the bay and the tram, and finally make the cottage live.
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 Lilyfield — 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 Lilyfield from $150K
- Inner West Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M — structural engineering included
- 1880s–1920s-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Light Rail Lilyfield (in suburb) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Between the village and the bay
Lilyfield's cottages extend backwards with craft — living opened toward the courtyard and the Iron Cove green, light drawn deep into the narrow floorplates, frontages conserved on the heritage streets.
The light rail keeps the lifestyle effortless through the build.
Fabric and walls handled
Party walls are assessed before any structural move on the attached cottages.
Lead and asbestos are handled under licence, with the cost in the fixed price from the outset.
Home extension builder in Lilyfield — key facts
- Suburb
- Lilyfield, NSW 2040
- Council / LGA
- Inner West Council (Inner West)
- Primary zoning
- R1/R2 General/Low
- Typical lot size
- 150–400m²
- Soil class
- M
- Median house price
- $2.0M–$3.5M
- Home era
- 1880s–1920s
- 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) | $103,000 – $230,000 |
| Moderate extension (multiple openings, roof extended) | $230,000 – $440,000 |
| Complex extension (structural steel portals, re-roofing) | $440,000 – $690,000 |
| Second-storey tie-in (existing house re-engineered) | $400,000 – $750,000 |
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. Lilyfield homes from the 1880s–1920s 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
Lilyfield Extension — Free Consultation
Free design consultation for Lilyfield 2040. We'll assess your home, design the extension, and provide a fixed-price quote.
Start Your ProjectMore in Lilyfield
Other Buildana services in Lilyfield
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Lilyfield 2040. Inner West Council regulations and local controls are covered on each page.