Eastgardens Home Extension Builder — Live In, Build On
Buildana extends homes across Eastgardens 2036 while you stay in place. 1950s–1980s + apartments-era structure, Bayside Council rules, weatherproofing during build — all managed locally from Fairfield.
HIA Member
MBA NSW0476 300 300Quick Answer
A home extension in Eastgardens 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.
Home Extension Builder in Eastgardens
A home extension in Eastgardens is a ground-conditions job before it is anything else. This master-planned pocket around Westfield Eastgardens runs post-war brick and contemporary villas on 400 to 700m² blocks, and the soil is Botany Sands, well-draining sand that wants its own footing design rather than a standard clay-country slab. Get that right and the rest is straightforward.
Two more local details shape the build. The suburb sits under airport flight-path overlays, so acoustic glazing on new rooms is worth designing in rather than retrofitting. And R3 and R4 zoning around the centre keeps re-rating the land, so at a $1.7M to $2.6M median a well-extended house on its own block holds its own against the apartments. Post-war framing generally points the job outward.
What I would check first on your Eastgardens house: the sand-based footing design, the flight-path acoustic requirement, and the rear yard depth. Those set the scope.
We build these fixed-price, licence HBL 487805C. Ask us for a quote built on your real ground conditions.
Buildana manages the complete home extension process in Eastgardens — 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 Eastgardens from $150K
- Bayside Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M — structural engineering included
- 1950s–1980s + apartments-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Bus to Mascot (T8, 4 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
The sand comes first
This master-planned pocket around Westfield Eastgardens runs post-war brick and contemporary villas on 400 to 700m² blocks, and the soil is Botany Sands, well-draining sand that wants its own footing design.
A standard clay-country slab is the wrong answer here. Get the footings right for the sand and the rest of the build is straightforward.
Flight path and land value
The suburb sits under airport flight-path overlays, so acoustic glazing on new rooms pays to design in rather than retrofit.
R3 and R4 zoning around the centre keeps re-rating the land, so at a $1.7M to $2.6M median a well-extended house on its own block holds its own against the apartments.
Home extension builder in Eastgardens — key facts
- Suburb
- Eastgardens, NSW 2036
- Council / LGA
- Bayside Council (Bayside)
- Primary zoning
- R2 Low
- Typical lot size
- 400–700m²
- Soil class
- M
- Median house price
- $1.7M–$2.6M
- Home era
- 1950s–1980s + 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.
Cost Guide
| Item | Estimated Range |
|---|---|
| Single-room addition (bedroom/study) | $58,000 – $140,000 |
| Kitchen/living extension | $150,000 – $340,000 |
| Master suite + ensuite addition | $130,000 – $270,000 |
| Second storey (full or partial) | $270,000 – $530,000 |
| Multi-room ground floor wrap | $340,000 – $580,000 |
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 Eastgardens 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 Eastgardens 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.
Start a Eastgardens Home Extension
Free design consultation for Eastgardens 2036. We'll assess your home, design the extension, and provide a fixed-price quote.
Start Your ProjectMore in Eastgardens
Other Buildana services in Eastgardens
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Eastgardens 2036. Bayside Council regulations and local controls are covered on each page.