Licensed Home Extension Builder Cronulla
NSW licensed extension specialist. Cronulla 2230 extensions on 1920s–1960s heritage + premium contemporary-era homes require structural sign-off, Class Hawkesbury Sandstone bedrock footings, and matched connection — we engineer and document properly.
HIA Member
MBA NSW0476 300 300Extending Homes in Cronulla
A home extension in Cronulla reads the peninsula's positions — beach-side heritage growing set-back view levels, the settled middle extending on era logic, and the apartment-zoned strips checked before any wing.
Salt-grade materials are standard near the sand, the pre-war fabric gets licensed handling, and the premium contemporary infill sets the bar.
At the $2.4M to $6M+ market, the addition beats trading out of the Shire's best position.
We build these fixed-price, licence HBL 487805C. Get our extension scope, with the position read, before you commit.
Buildana manages the complete home extension process in Cronulla — 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 Cronulla from $150K
- Sutherland Shire Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- Hawkesbury Sandstone bedrock — 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 Cronulla station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
The peninsula's three plays
Cronulla's beach streets grow set-back view levels above their heritage faces, the middle extends on era logic, and the zoned strips get the value check first.
The surf-and-rail lifestyle holds every metre added.
Coast and fabric handled
Salt-grade materials are standard near the sand, and lead paint joins asbestos on the pre-war fabric — licensed processes both.
Both the salt-grade spec and the licensed strip-out are in the quote from the outset.
Home extension builder in Cronulla — key facts
- Suburb
- Cronulla, NSW 2230
- Council / LGA
- Sutherland Shire Council (Sutherland Shire)
- Primary zoning
- R2 Low
- Typical lot size
- 400–800m²
- Soil class
- Hawkesbury Sandstone bedrock
- Median house price
- $2.4M–$6M+ (beachfront)
- 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.
Quality Promise
Every Buildana home extension in Cronulla is delivered under a fixed-price contract — from design consultation through to defect-free handover.
How It Works
From First Call to Final Key
The first job on an extension is finding out what you're extending onto. Cronulla homes from the 1920s–1960s heritage + premium contemporary were built to different standards — we open walls, check footings, verify load paths. The existing house has to carry the new work.
⏱Design follows the existing roof. A bad extension looks like a bolt-on; a good one reads as original. Matched brickwork or contrasting render (whichever the architecture calls for), tied-in roofline, continuous flooring where it should be continuous.
⏱Construction happens while you live in the house. That means weatherproofing every night, staging the works so kitchens and bathrooms don't disappear on the same week, and keeping the site clean of debris that doesn't belong in a family home.
⏱Finish is seamless. Paint match, floor match, roofline match, brick match where possible. The only way to tell the extension is new is the date on the plans.
⏱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, Don't Move — Cronulla
Free design consultation for Cronulla 2230. We'll assess your home, design the extension, and provide a fixed-price quote.
Start Your ProjectMore in Cronulla
Other Buildana services in Cronulla
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Cronulla 2230. Sutherland Shire Council regulations and local controls are covered on each page.