Home Extension Builder Queenscliff — From $150K Fixed Price
Fixed-price home extensions in Queenscliff 2096. Rear extension $150K–$300K, second storey $300K–$500K. Northern Beaches Council approvals managed. Free site consult.
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MBA NSW0476 300 300Quick Answer
A home extension in Queenscliff costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, Northern Beaches Council approvals, and construction under one fixed-price contract.
Queenscliff Home Extensions — Fixed Price
A home extension in Queenscliff works the headland — Federation beach houses on 350 to 700m² blocks where the set-back level claims ocean the originals never saw and the lagoon end gets its soils read.
The heritage faces keep the street, salt-grade materials are standard, and the compact blocks demand designed-to-the-metre additions.
At the $3.0M to $6M+ market, the view level is the most valuable room the block can grow.
We build these fixed-price, licence HBL 487805C. Get our extension scope, with the view line checked, before you commit.
Buildana manages the complete home extension process in Queenscliff — 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 Queenscliff from $150K
- Northern Beaches Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- Hawkesbury Sandstone — structural engineering included
- 1900s–1940s heritage + premium contemporary-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Manly Ferry (1 km) + B-Line bus to CBD station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
The headland rewards height
Queenscliff's position puts the ocean one set-back storey up on most orientations — and in this market, that level moves the valuation more than anything at ground.
The conserved Federation faces keep the street while the addition works behind.
Compact and coastal, handled
The tight blocks demand precision, the lagoon-end soils get read before any dig, and salt-grade materials are standard.
Every one of those is in the fixed price before we start.
Home extension builder in Queenscliff — key facts
- Suburb
- Queenscliff, NSW 2096
- Council / LGA
- Northern Beaches Council (Northern Beaches)
- Primary zoning
- R2 Low
- Typical lot size
- 350–700m²
- Soil class
- Hawkesbury Sandstone
- Median house price
- $3.0M–$6M+ (oceanfront)
- Home era
- 1900s–1940s heritage + premium contemporary
- 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 |
|---|---|
| Adding a master suite (1900s–1940s heritage + premium contemporary Queenscliff home) | $160,000 – $340,000 |
| Kitchen/living open-out to backyard | $180,000 – $420,000 |
| Second storey for teenagers/office | $340,000 – $660,000 |
| Extension + bathroom (growing family) | $240,000 – $480,000 |
| Full rear + roof tie-in (entertainer's zone) | $420,000 – $720,000 |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
How It Works
From First Call to Final Key
On-site assessment of your 1900s–1940s heritage + premium contemporary-era home in Queenscliff. We check structural condition, block dimensions (350–700m²), setback availability, and Northern Beaches Council's DCP requirements.
⏱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.
⏱We lodge your extension approval — CDC for eligible designs or DA through Northern Beaches Council. Full documentation including structural engineering for Class Hawkesbury Sandstone soil, BASIX, and shadow diagrams.
⏱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.
⏱Final inspection, Occupation Certificate, 6-year structural warranty. Your Queenscliff 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
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
Extend Your Home in Queenscliff
Free design consultation for Queenscliff 2096. We'll assess your home, design the extension, and provide a fixed-price quote.
Start Your ProjectMore in Queenscliff
Other Buildana services in Queenscliff
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Queenscliff 2096. Northern Beaches Council regulations and local controls are covered on each page.