Kyeemagh Home Extension Builder — Live In, Build On
Buildana extends homes across Kyeemagh 2216 while you stay in place. 1940s–1970s-era structure, Bayside Council rules, weatherproofing during build — all managed locally from Fairfield.
HIA Member
MBA NSW0476 300 300Quick Answer
A home extension in Kyeemagh costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, Bayside Council approvals, and construction under one fixed-price contract.
Extending Homes in Kyeemagh
A home extension in Kyeemagh is a ground-and-noise job before anything else. This small foreshore pocket between Brighton-Le-Sands and the airport runs post-war brick on 400 to 700m² blocks over Botany Sands with an elevated water table, so footings need to be engineered for wet sand rather than poured as a standard slab. Get that right and the rest follows.
The other constant is the airport. Kyeemagh sits under a severe ANIP flight-path overlay, directly under the runway approach, so acoustic glazing and sound-rated construction on any new rooms is essential, not optional. The post-war framing extends best at ground level, and at a $1.5M to $2.2M median with the Cooks River foreshore at the door, a rear addition keeps you on a rare piece of foreshore-adjacent land.
What I would check first on your Kyeemagh house: the sand and water-table footing design, the acoustic requirement, and the rear yard depth. Those set the scope.
We build these fixed-price, licence HBL 487805C. Ask us for a quote grounded in your actual site.
Buildana manages the complete home extension process in Kyeemagh — 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 Kyeemagh from $150K
- Bayside Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M — structural engineering included
- 1940s–1970s-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Bus to Rockdale (T4, 2 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Wet sand, not a standard slab
This foreshore pocket runs post-war brick on 400 to 700m² blocks over Botany Sands with an elevated water table, so footings need to be engineered for wet sand rather than poured as a standard slab.
Get that right and the rest of the build follows, on a rare piece of foreshore-adjacent land by the Cooks River.
Directly under the approach
Kyeemagh sits under a severe ANIP flight-path overlay, directly under the runway approach, so acoustic glazing and sound-rated construction on new rooms is essential, not optional.
The post-war framing extends best at ground level, and at a $1.5M to $2.2M median a rear addition keeps you on the foreshore.
Home extension builder in Kyeemagh — key facts
- Suburb
- Kyeemagh, NSW 2216
- Council / LGA
- Bayside Council (Bayside)
- Primary zoning
- R2 Low
- Typical lot size
- 400–700m²
- Soil class
- M
- Median house price
- $1.5M–$2.2M
- Home era
- 1940s–1970s
- 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 |
|---|---|
| Single-room addition (bedroom/study) | $56,000 – $130,000 |
| Kitchen/living extension | $140,000 – $330,000 |
| Master suite + ensuite addition | $120,000 – $260,000 |
| Second storey (full or partial) | $260,000 – $510,000 |
| Multi-room ground floor wrap | $330,000 – $560,000 |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
How It Works
From First Call to Final Key
Walk through your Kyeemagh home with our designer and structural engineer. We measure, photograph, and check the bones — footings, frame condition, roof structure. The cost estimate that follows is grounded in what we found, not a generic per-m² number.
⏱Our designer works with your existing home's layout — connecting new living areas to existing rooms, matching materials and roof pitch, and maximising natural light. You approve floor plans and 3D renders before we proceed.
⏱Most rear extensions in Kyeemagh qualify for CDC — cleaner, faster, no neighbour notification. Second-storey additions typically need DA through Bayside Council because of overshadowing and privacy assessments. We choose based on your design, not on what's easier to lodge.
⏱Extension built from new footings to completion — connecting structurally to your existing home. Class M soil design managed. Temporary weatherproofing maintains liveability where possible.
⏱Walk through the completed extension, confirm finishes, collect your OC. Six-year structural warranty covers all new work including the junction with your existing home. Maintenance guide provided.
⏱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.
Add Space to Your Kyeemagh Home
Free design consultation for Kyeemagh 2216. We'll assess your home, design the extension, and provide a fixed-price quote.
Start Your ProjectMore in Kyeemagh
Other Buildana services in Kyeemagh
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Kyeemagh 2216. Bayside Council regulations and local controls are covered on each page.