Licensed Home Extension Builder Cremorne Point
NSW licensed extension specialist. Cremorne Point 2090 extensions on 1900s–1940s heritage + 1960s+ apartments-era homes require structural sign-off, Class M footings, and matched connection — we engineer and document properly.
HIA Member
MBA NSW0476 300 300Quick Answer
A home extension in Cremorne Point costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, North Sydney Council approvals, and construction under one fixed-price contract.
Second-Storey & Rear Additions in Cremorne Point
A home extension in Cremorne Point is peninsula work at the top of the market. Federation homes sit under heavy heritage on 350 to 700m² blocks that fall away to the harbour, so this is a job where the conservation standard and the engineering down the slope matter more than the square metres you add.
The heritage position leads every decision here — nothing gets drawn before it is mapped. Engineered slabs and retaining are standard on the fall rather than exceptional, and the pre-war fabric has lead paint and asbestos dealt with under licence.
At a $3.5M to $8.0M median, the only wing worth building is an exact one — the peninsula's standing does not forgive a compromise, and the harbour is right there to be drawn into the new living.
We build these fixed-price, licence HBL 487805C. Get our extension scope, with heritage and fall resolved, before you commit.
Buildana manages the complete home extension process in Cremorne Point — 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 Cremorne Point from $150K
- North Sydney Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M — structural engineering included
- 1900s–1940s heritage + 1960s+ apartments-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near North Sydney (4 km, ferry to Circular Quay) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Exact, or not at all
Cremorne Point's values and heritage controls demand the wing be exact — conservation-standard fabric work, engineered structure down the fall, and the harbour drawn into the new living.
The peninsula's standing rewards precisely that discipline and punishes shortcuts.
Fall and fabric handled
Engineered slabs and retaining are standard on the fall, designed and priced before the first sketch.
Lead paint rides with asbestos through the licensed pre-war handling, all priced into the job from the outset.
Home extension builder in Cremorne Point — key facts
- Suburb
- Cremorne Point, NSW 2090
- Council / LGA
- North Sydney Council (North Sydney)
- Primary zoning
- R3 Medium
- Typical lot size
- 350–700m²
- Soil class
- M
- Median house price
- $3.5M–$8.0M
- Home era
- 1900s–1940s heritage + 1960s+ apartments
- 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.
How It Works
From First Call to Final Key
Everything that has to be right before we touch the ground. We assess your Cremorne Point home — existing structure, block size (350–700m²), R3 Medium zoning, setbacks, FSR, and your space requirements. You'll know what's achievable before spending on detailed design. Design phase covers the extension layout, junction with existing structure, window and door placement, and external finish to match your Cremorne Point home's streetscape. Multiple design options presented.
⏱The Cremorne Point construction phase. Fixed price, programmed, supervised. Documentation pack covers structural engineering for the new footings sized to match existing depths on Class M soil, BASIX 2025 compliance, shadow diagrams to neighbours' POS, hydraulic, and detailed sections through the wall-tie junction. Approval-grade, not concept-grade. Fixed-price construction of your extension. New footings engineered for Class M soil, structural connection to existing home, frame, fit-out, and finishes. Weekly updates from your project manager.
⏱The job isn't done when the site's clean; it's done when you have keys, certificates and warranties. Handover documentation covers the new work specifically — OC for the extension, structural certs, BASIX certificate updates, and warranty for the new section plus the junction detailing. Existing house remains under whatever warranty position applied before.
⏱Quality Promise
Buildana's Cremorne Point home extension process: assess the existing structure, design the addition, approve, build. Fixed price throughout.
Cost Guide
| Item | Estimated Range |
|---|---|
| Small rear extension (up to 30m²) | $119,000 – $240,000 |
| Medium rear/side extension (30–60m²) | $240,000 – $420,000 |
| Large ground-floor extension (60–100m²) | $420,000 – $660,000 |
| Second-storey addition (60–120m²) | $370,000 – $730,000 |
| Wrap-around (ground + 1st floor) | $660,000+ |
| Structural engineering & tie-in | Included |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
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
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Cremorne Point Extension — Free Consultation
Free design consultation for Cremorne Point 2090. We'll assess your home, design the extension, and provide a fixed-price quote.
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Other Buildana services in Cremorne Point
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Cremorne Point 2090. North Sydney Council regulations and local controls are covered on each page.