Home Extension Builder Putney — From $150K Fixed Price
Fixed-price home extensions in Putney 2112. Rear extension $150K–$300K, second storey $300K–$500K. City of Ryde Council approvals managed. Free site consult.
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A home extension in Putney costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, City of Ryde Council approvals, and construction under one fixed-price contract.
Extending Homes in Putney
A home extension in Putney is riverside village work. The Federation and inter-war homes on 550 to 850m² blocks sit around a small heritage core with the Parramatta River at the bottom of the streets, so the wing goes in behind the conserved frontage and, where the block allows, opens the living toward the water.
On the streets that fall toward the wharf, the drop is real, so suspended-slab engineering handles it rather than the design pretending the ground is flat. The pre-war fabric gets licensed treatment for its lead and asbestos throughout.
At a $2.4M to $4.5M median, a wing beats trading out of the village — the ferry-side, river-edge lifestyle is the asset, and the block sizes here give the design real room to build to it.
We build these fixed-price, licence HBL 487805C. Get our extension scope, with heritage and fall resolved, before you commit.
Buildana manages the complete home extension process in Putney — 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 Putney from $150K
- City of Ryde Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M — structural engineering included
- 1900s–1960s-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Meadowbank (T9, 3 km) / Putney ferry to Mortlake station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Village core, river edge
Putney's heritage village core keeps its frontages — the wing works behind, opened toward the river where the siting allows, with suspended-slab engineering on the falling wharf-side streets.
The 550 to 850m² blocks give the design real room.
Fabric and fall handled
Lead paint sits with asbestos on the pre-war fabric, both run as licensed processes.
The fall is engineered early where it applies, and all of it is priced into the job from the outset.
Home extension builder in Putney — key facts
- Suburb
- Putney, NSW 2112
- Council / LGA
- City of Ryde Council (City of Ryde)
- Primary zoning
- R2 Low
- Typical lot size
- 550–850m²
- Soil class
- M
- Median house price
- $2.4M–$4.5M (river-frontage $5M+)
- Home era
- 1900s–1960s
- 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 Putney home — existing structure, block size (550–850m²), R2 Low 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 Putney 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
We extend Putney homes with a structural engineer on every job. Second storey, rear addition, multi-room — engineered and priced upfront.
Cost Guide
| Item | Estimated Range |
|---|---|
| Single-room addition (bedroom/study) | $65,000 – $150,000 |
| Kitchen/living extension | $160,000 – $380,000 |
| Master suite + ensuite addition | $140,000 – $300,000 |
| Second storey (full or partial) | $300,000 – $590,000 |
| Multi-room ground floor wrap | $380,000 – $650,000 |
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
Putney Extension — Free Consultation
Free design consultation for Putney 2112. We'll assess your home, design the extension, and provide a fixed-price quote.
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Other Buildana services in Putney
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Putney 2112. City of Ryde Council regulations and local controls are covered on each page.