Home Extension Builder Beecroft — Approved in 60 Days
Beecroft 2119 extensions with tight approval timelines. CDC where eligible (~15 days), DA via Hornsby Shire 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 Beecroft costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, Hornsby Shire Council approvals, and construction under one fixed-price contract.
Extending Homes in Beecroft
A home extension in Beecroft starts with heritage, because a Heritage Conservation Area covers virtually the entire suburb. The Federation mansions and inter-war Tudor homes on 700 to 1,400m² R2 blocks are precisely what those controls exist to protect, so demolition is off the table and street-facing changes get examined closely. The good news is that blocks this generous give you room to extend at the rear without touching the frontage.
That space is the advantage. On a 700m²-plus block you can add a whole living wing behind the original house and never crowd the garden, which suits the family market drawn here by Beecroft Public and Cheltenham Girls. Hawkesbury Sandstone means rock in the dig, so we test before pricing groundwork. At a $2.8M to $4.2M premium median, doing it properly is the only way that makes sense.
What I would check first on your Beecroft home: the heritage status of the frontage, and where the sandstone starts under a rear addition. Those set the design and the budget.
We build these fixed-price, licence HBL 487805C. Let us pull your heritage mapping before you plan.
Buildana manages the complete home extension process in Beecroft — 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 Beecroft from $150K
- Hornsby Shire Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- Hawkesbury Sandstone bedrock — structural engineering included
- 1900s–1940s Federation heritage (Beecroft/Cheltenham/Pennant Hills/Wahroonga boundary) + 1960s–1990s brick (Cherrybrook/Asquith/Mount Colah/Mount Kuring-gai) + 2010s+ R3/R4 redevelopment around Hornsby/Asquith/Waitara stations-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Beecroft station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Heritage covers the whole suburb
A Heritage Conservation Area covers virtually all of Beecroft, and the Federation mansions and inter-war Tudor homes on 700 to 1,400m² R2 blocks are what it protects. Demolition is off the table and street-facing changes get examined closely.
The generous blocks are the answer: there is room to extend at the rear without touching the protected frontage.
Room to add a whole wing
On a 700m²-plus block you can add a full living wing behind the original house and never crowd the garden, which suits the family market drawn by Beecroft Public and Cheltenham Girls.
Hawkesbury Sandstone puts rock in the dig, so we test before pricing groundwork. At a $2.8M to $4.2M premium median, doing it properly is the only approach that makes sense.
Home extension builder in Beecroft — key facts
- Suburb
- Beecroft, NSW 2119
- Council / LGA
- Hornsby Shire Council (Hornsby Shire)
- Primary zoning
- R2 Low Density predominant
- Typical lot size
- 700–1,400m²
- Soil class
- Hawkesbury Sandstone bedrock
- Median house price
- $2.8M–$4.2M premium heritage
- Home era
- 1900s–1940s Federation heritage
- 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. On-site assessment of your 1900s–1940s Federation heritage (Beecroft/Cheltenham/Pennant Hills/Wahroonga boundary) + 1960s–1990s brick (Cherrybrook/Asquith/Mount Colah/Mount Kuring-gai) + 2010s+ R3/R4 redevelopment around Hornsby/Asquith/Waitara stations-era home in Beecroft. We check structural condition, block dimensions (700–1,400m²), setback availability, and Hornsby Shire Council's DCP requirements. Written feasibility and cost estimate provided. Designing an extension is half about the new space and half about how it joins the old one. Doorway position, ceiling height transition, floor level matching, light wells — the junction makes or breaks how the finished home feels.
⏱The Beecroft construction phase. Fixed price, programmed, supervised. We lodge your extension approval — CDC for eligible designs or DA through Hornsby Shire Council. Full documentation including structural engineering for Class Hawkesbury Sandstone bedrock soil, BASIX, and shadow diagrams. CC issued before works start. For ground-floor rear extensions you usually stay in the house during the build, with temporary weatherproofing at the junction wall until the new section is locked up. Second-storey additions need a 4–8 week relocation during the roof-off and frame-up phase.
⏱The job isn't done when the site's clean; it's done when you have keys, certificates and warranties. Final inspection, Occupation Certificate, 6-year structural warranty. Your Beecroft home now has the space your family needs.
⏱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
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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Last updated: 1 April 2026
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Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Beecroft 2119. Hornsby Shire Council regulations and local controls are covered on each page.