Home Extension Builder Curl Curl — Approved in 60 Days
Curl Curl 2096 extensions with tight approval timelines. CDC where eligible (~15 days), DA via Northern Beaches Council in 40–60 days. Construction 12–24 weeks depending on scope.
HIA Member
MBA NSW0476 300 300Quick Answer
A home extension in Curl Curl 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.
Second-Storey & Rear Additions in Curl Curl
A home extension in Curl Curl is nearly always a play for the ocean. The Federation beach houses and inter-war homes on 450 to 800m² blocks sit a walk from the sand, and a carefully designed first floor lifts living space to a view the single-storey original never claimed. In a market running $3M to $6M-plus on the oceanfront, that view level is the most valuable room you can build.
The ground sets the rules. Direct beachfront sits in the Coastal Hazard zone with its own engineering scrutiny, lagoon-edge lots near Curl Curl Lagoon carry coastal acid sulphate soils that complicate any dig, and Hawkesbury Sandstone means rock in the excavation. A Heritage Conservation Area over the older streets watches the frontage while rear and roofline work moves more freely. Salt-grade materials are standard this close to the water.
What I would check first on your Curl Curl block: whether you are beachfront, lagoon-edge or the easier land between, the heritage overlay, and whether an upper level would claim the view. Those decide the design.
We build these fixed-price, licence HBL 487805C. Ask us what your address allows before you design.
Buildana manages the complete home extension process in Curl Curl — 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 Curl Curl from $150K
- Northern Beaches Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- Hawkesbury Sandstone — structural engineering included
- 1920s–1960s heritage + premium contemporary-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near B-Line bus to CBD (Brookvale interchange) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
A play for the ocean
The Federation beach houses and inter-war homes on 450 to 800m² blocks sit a walk from the sand, and a carefully designed first floor lifts living space to a view the original never claimed.
In a market running $3M to $6M-plus on the oceanfront, that upper level is worth more than any room added at ground level.
The ground sets the rules
Direct beachfront sits in the Coastal Hazard zone, lagoon-edge lots carry acid sulphate soils that complicate any dig, and Hawkesbury Sandstone means rock in the excavation.
A Heritage Conservation Area over the older streets watches the frontage while rear and roofline work moves more freely, and salt-grade materials are standard this close to the water.
Home extension builder in Curl Curl — key facts
- Suburb
- Curl Curl, NSW 2096
- Council / LGA
- Northern Beaches Council (Northern Beaches)
- Primary zoning
- R2 Low
- Typical lot size
- 450–800m²
- Soil class
- Hawkesbury Sandstone
- Median house price
- $3.0M–$6M+ (oceanfront)
- Home era
- 1920s–1960s 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 (1920s–1960s heritage + premium contemporary Curl Curl home) | $150,000 – $330,000 |
| Kitchen/living open-out to backyard | $180,000 – $410,000 |
| Second storey for teenagers/office | $330,000 – $650,000 |
| Extension + bathroom (growing family) | $240,000 – $470,000 |
| Full rear + roof tie-in (entertainer's zone) | $410,000 – $710,000 |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
How It Works
From First Call to Final Key
Extension feasibility comes down to two things: what the existing structure can carry, and what Northern Beaches Council will let you build. We assess both at the consultation — no point designing for a second storey if the slab can't take the load.
⏱Extension designed to integrate with your existing Curl Curl home — matching roof lines, materials, and flow between old and new sections. Floor plans, elevations, and 3D renders.
⏱All approval documentation prepared: structural drawings, BASIX, shadow analysis, stormwater, and statement of environmental effects (if DA). Lodged and managed through to Construction Certificate.
⏱Extension construction takes 3–6 months on average. Footings excavated and poured to match existing depth on Class Hawkesbury Sandstone soil, frame stand, roof tie-in (most weather-critical phase), lock-up, then internal fit-out at the same standard as the existing house.
⏱Defect-free inspection, OC issued, 6-year warranty on all new work. Junction between old and new sections waterproofed and warranted.
⏱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
We Build Across Sydney
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 Curl Curl
Free design consultation for Curl Curl 2096. We'll assess your home, design the extension, and provide a fixed-price quote.
Start Your ProjectMore in Curl Curl
Other Buildana services in Curl Curl
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Curl Curl 2096. Northern Beaches Council regulations and local controls are covered on each page.