Home Extension Beauty Point — Design, Approval, Structural, Build
Full-service extensions in Beauty Point 2088: structural survey of existing 1900s–1950s home, design, Mosman Council approval, engineering, weatherproofed construction, matched finish to original dwelling.
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A home extension in Beauty Point costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, Mosman Council approvals, and construction under one fixed-price contract.
Extending Homes in Beauty Point
A home extension in Beauty Point works a peninsula wedged between two bays. The Federation and inter-war homes on 600 to 1,200m² blocks fall away to Middle Harbour, so the wing is built to capture that outlook — but the headline cost here is underground, because these lots sit on sandstone and the rock has to be priced from the geotech, not guessed at by the machine on the day.
The heritage areas steer a conserve-and-add approach, keeping the frontage and working the new living behind and below it. The oldest fabric gets licensed lead and asbestos handling.
At a $4.5M to $9.0M median, a wing that earns the harbour changes what the home is worth — provided the rock is understood and costed honestly before you commit rather than after the excavator arrives.
We build these fixed-price, licence HBL 487805C. Get our extension scope, with rock and fall priced, before you commit.
Buildana manages the complete home extension process in Beauty 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 Beauty Point from $150K
- Mosman Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M — structural engineering included
- 1900s–1950s-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near North Sydney (6 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
The peninsula premium
Beauty Point's harbour outlook carries the premium, and the wing earns it — living opened to the water down the fall, on 600 to 1,200m² blocks with genuine room.
On the HCA streets the conserved heritage fabric leads the approach.
Rock is a real line item here
Significant rock excavation applies where the structure changes, so it is priced from the geotech up front rather than discovered by the machine.
The pre-war hazards run as licensed processes, and all of it is in the scope from the outset.
Home extension builder in Beauty Point — key facts
- Suburb
- Beauty Point, NSW 2088
- Council / LGA
- Mosman Council (Mosman)
- Primary zoning
- R2 Low Density
- Typical lot size
- 600–1,200m²
- Soil class
- M
- Median house price
- $4.5M–$9.0M
- Home era
- 1900s–1950s
- 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
We assess your Beauty Point home — existing structure, block size (600–1,200m²), R2 Low Density 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 Beauty Point home's streetscape. Multiple design options presented.
⏱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.
⏱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
Our Beauty Point home extensions connect old-to-new cleanly. Matched brickwork, tied roofline, no awkward transitions.
Cost Guide
| Item | Estimated Range |
|---|---|
| Single-room addition (bedroom/study) | $83,000 – $190,000 |
| Kitchen/living extension | $210,000 – $480,000 |
| Master suite + ensuite addition | $180,000 – $390,000 |
| Second storey (full or partial) | $390,000 – $760,000 |
| Multi-room ground floor wrap | $480,000 – $830,000 |
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
Add Space to Your Beauty Point Home
Free design consultation for Beauty Point 2088. We'll assess your home, design the extension, and provide a fixed-price quote.
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Other Buildana services in Beauty Point
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Beauty Point 2088. Mosman Council regulations and local controls are covered on each page.