Home Extension Builder Chifley — From $150K Fixed Price
Fixed-price home extensions in Chifley 2036. Rear extension $150K–$300K, second storey $300K–$500K. Randwick City Council approvals managed. Free site consult.
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A home extension in Chifley costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, Randwick City Council approvals, and construction under one fixed-price contract.
Extending Homes in Chifley
A home extension in Chifley is the value play of the eastern suburbs. This quiet inland pocket of the Randwick LGA runs post-war fibro and brick on 500 to 700m² blocks, and at a $1.8M to $2.8M median it is an affordable entry to a part of Sydney where a well-extended house holds its value strongly. The block depth here leaves genuine room for a rear addition.
The construction is honest and manageable. Post-war framing suits ground-floor additions and resists second storeys without steel, so out is the standard call, and the older fibro gets an asbestos screen and licensed removal before anything bolts on. Sandstone soil means we test the dig before pricing groundwork. Malabar and Little Bay are minutes away.
What I would check first on your Chifley house: the asbestos in older fibro, the sandstone under a dig, and the rear yard depth. Those set the safe, priced scope.
We build these fixed-price, licence HBL 487805C. Ask us for a quote built on your actual ground.
Buildana manages the complete home extension process in Chifley — 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 Chifley from $150K
- Randwick City Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M — structural engineering included
- 1950s–1970s-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Light Rail Kingsford (3 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Value in the east
This quiet inland pocket of the Randwick LGA runs post-war fibro and brick on 500 to 700m² blocks, and at a $1.8M to $2.8M median it is an affordable entry to a part of Sydney where a well-extended house holds value strongly.
The block depth leaves genuine room for a rear addition, so most owners are better off building than leaving.
Honest, manageable construction
The post-war framing favours ground-floor additions and fights a second storey without steel, so out is the standard call, and the older fibro gets an asbestos screen and licensed removal before anything bolts on.
Sandstone in the ground means we test the dig before pricing groundwork. Malabar and Little Bay sit just minutes away.
Home extension builder in Chifley — key facts
- Suburb
- Chifley, NSW 2036
- Council / LGA
- Randwick City Council (Randwick)
- Primary zoning
- R2 Low
- Typical lot size
- 500–700m²
- Soil class
- M
- Median house price
- $1.8M–$2.8M
- Home era
- 1950s–1970s
- 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 |
|---|---|
| Small rear extension (up to 30m²) | $86,000 – $170,000 |
| Medium rear/side extension (30–60m²) | $170,000 – $300,000 |
| Large ground-floor extension (60–100m²) | $300,000 – $480,000 |
| Second-storey addition (60–120m²) | $270,000 – $520,000 |
| Wrap-around (ground + 1st floor) | $480,000+ |
| Structural engineering & tie-in | Included |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
How It Works
From First Call to Final Key
Everything that has to be right before we touch the ground. Walk through your Chifley home with our designer and structural engineer. We measure, photograph, and check the bones — footings, frame condition, roof structure. The cost estimate that follows is grounded in what we found, not a generic per-m² number. Our designer works with your existing home's layout — connecting new living areas to existing rooms, matching materials and roof pitch, and maximising natural light. You approve floor plans and 3D renders before we proceed.
⏱The Chifley construction phase. Fixed price, programmed, supervised. Most rear extensions in Chifley qualify for CDC — cleaner, faster, no neighbour notification. Second-storey additions typically need DA through Randwick City Council because of overshadowing and privacy assessments. We choose based on your design, not on what's easier to lodge. Extension built from new footings to completion — connecting structurally to your existing home. Class M soil design managed. Temporary weatherproofing maintains liveability where possible.
⏱The job isn't done when the site's clean; it's done when you have keys, certificates and warranties. Walk through the completed extension, confirm finishes, collect your OC. Six-year structural warranty covers all new work including the junction with your existing home. Maintenance guide provided.
⏱Our Team
Oliver Alameri
Founder / Director / Builder · MPropDev · PhD Student
Ahmad Alameri
Accounts Manager
Claire Wendell
Project Manager
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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
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Liverpool, NSW
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Last updated: 1 April 2026
Chifley Extension — Free Consultation
Free design consultation for Chifley 2036. We'll assess your home, design the extension, and provide a fixed-price quote.
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Other Buildana services in Chifley
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Chifley 2036. Randwick City Council regulations and local controls are covered on each page.