Home Extension Builder Camden — From $150K Fixed Price
Fixed-price home extensions in Camden 2570. Rear extension $150K–$300K, second storey $300K–$500K. Camden Council approvals managed. Free site consult.
HIA Member
MBA NSW0476 300 300Quick Answer
A home extension in Camden costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, Camden Council approvals, and construction under one fixed-price contract.
Second-Storey & Rear Additions in Camden
A home extension in Camden reads the era first — heritage CBD homes extended behind conserved frontages, the older 1900s-1970s stock grown on the value read, and the master-planned estates given the honest not-yet.
The heritage controls are checked on the historic streets, the older fabric gets licensed handling, and the clay junctions are engineered.
At the master-planned $1.0M to $1.4M and the older $1.2M to $1.8M, the right wing beats the friction of upsizing in the Macarthur growth belt.
We build these fixed-price, licence HBL 487805C. Get our extension scope, with era and heritage read, before you commit.
Buildana manages the complete home extension process in Camden — 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 Camden from $150K
- Camden Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M — structural engineering included
- Predominantly 2010s+ master-planned (Oran Park/Spring Farm/Gledswood Hills); 1980s–2000s (Mount Annan/Currans Hill/Harrington Park); 1900s–1970s heritage Camden CBD-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Macarthur (10 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Three Camdens, three answers
Camden splits into the heritage CBD, the older established stock and the new master-planned estates — and the extension logic differs across all three.
The historic town character is checked before design money moves on the older streets.
Heritage and era handled
The CBD's controls are checked street by street, and the older fabric gets licensed handling where disturbed.
Both are costed into the scope up front, street-specific not generic.
Home extension builder in Camden — key facts
- Suburb
- Camden, NSW 2570
- Council / LGA
- Camden Council (Camden Council)
- Primary zoning
- R2 Low Density predominant
- Typical lot size
- 300–500m² master-planned (Oran Park/Spring Farm/Gledswood Hills/Harrington Park/Mount Annan); 600–900m² older Camden/Narellan; 1ha+ acreage (Cobbitty/Bickley Vale/Brownlow Hill/Werombi)
- Soil class
- M
- Median house price
- $1.0M–$1.4M master-planned; $1.2M–$1.8M Harrington Park/Mount Annan/Cobbitty premium; $2.0M–$5.0M+ Cobbitty/Bickley Vale/Brownlow Hill acreage
- Home era
- Predominantly 2010s+ master-planned
- 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) | $90,000 – $200,000 |
| Moderate extension (multiple openings, roof extended) | $200,000 – $380,000 |
| Complex extension (structural steel portals, re-roofing) | $380,000 – $600,000 |
| Second-storey tie-in (existing house re-engineered) | $350,000 – $650,000 |
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. Camden homes from the Predominantly 2010s+ master-planned (Oran Park/Spring Farm/Gledswood Hills); 1980s–2000s (Mount Annan/Currans Hill/Harrington Park); 1900s–1970s heritage Camden CBD 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
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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.
Extend Your Home in Camden
Free design consultation for Camden 2570. We'll assess your home, design the extension, and provide a fixed-price quote.
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Other Buildana services in Camden
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Camden 2570. Camden Council regulations and local controls are covered on each page.