Home Extension Builder Cranebrook — Approved in 60 Days
Cranebrook 2749 extensions with tight approval timelines. CDC where eligible (~15 days), DA via Penrith City Council in 40–60 days. Construction 12–24 weeks depending on scope.
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MBA NSW0476 300 300Quick Answer
A home extension in Cranebrook costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, Penrith City Council approvals, and construction under one fixed-price contract.
Home Extension Builder in Cranebrook
A home extension in Cranebrook puts moving money into rooms — 1960s-1980s fibro and brick veneer on 450 to 750m² blocks at a $850K to $1.3M entry, where the wing shifts liveability meaningfully.
The fibro gets the licensed strip-out first, the older framing gets checked before it borders new structure, and the junctions are engineered.
The stamp duty and agent fees of upsizing locally would fund a serious part of the addition.
We build these fixed-price, licence HBL 487805C. Let us walk the property before you ring an agent.
Buildana manages the complete home extension process in Cranebrook — 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 Cranebrook from $150K
- Penrith City Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M — structural engineering included
- 1960s–1980s fibro/brick veneer (Cranebrook/Werrington/Cambridge Park/Kingswood/St Marys) + 1990s–2010s brick (Glenmore Park/Cambridge Gardens) + 2010s+ master-planned (Jordan Springs/Caddens/Claremont Meadows)-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Penrith (4 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Moving money into rooms
At Cranebrook's entry, the friction of upsizing funds most of a decent rear addition — so the wing keeps the money in the building rather than the agent's pocket.
The generous blocks leave real room to add across the back.
Older stock read honestly
The 1960s-1980s framing varies under the cladding, so we open up and check before quoting structure, and fibro gets the licensed strip-out first.
Both the structural check and the strip-out are in the fixed price up front.
Home extension builder in Cranebrook — key facts
- Suburb
- Cranebrook, NSW 2749
- Council / LGA
- Penrith City Council (City of Penrith)
- Primary zoning
- R2 Low Density predominant
- Typical lot size
- 450–750m² typical (Cranebrook/Werrington/Cambridge Park/Kingswood/St Marys); 250–450m² master-planned (Jordan Springs/Caddens/Glenmore Park new release)
- Soil class
- M
- Median house price
- $850K–$1.3M typical; $1.0M–$1.6M Glenmore Park/Jordan Springs premium master-planned; $1.6M–$3.0M+ Mulgoa/Wallacia/Castlereagh acreage
- Home era
- 1960s–1980s fibro/brick veneer
- 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) | $90,000 – $180,000 |
| Medium rear/side extension (30–60m²) | $180,000 – $320,000 |
| Large ground-floor extension (60–100m²) | $320,000 – $500,000 |
| Second-storey addition (60–120m²) | $280,000 – $550,000 |
| Wrap-around (ground + 1st floor) | $500,000+ |
| 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 Cranebrook 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 Cranebrook construction phase. Fixed price, programmed, supervised. Most rear extensions in Cranebrook qualify for CDC — cleaner, faster, no neighbour notification. Second-storey additions typically need DA through Penrith 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
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
Cranebrook Extension — Free Consultation
Free design consultation for Cranebrook 2749. We'll assess your home, design the extension, and provide a fixed-price quote.
Start Your ProjectMore in Cranebrook
Other Buildana services in Cranebrook
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Cranebrook 2749. Penrith City Council regulations and local controls are covered on each page.