Licensed Home Extension Builder Ermington
NSW licensed extension specialist. Ermington 2115 extensions on 1950s–1970s + 2010s+ apartments-era homes require structural sign-off, Class M footings, and matched connection — we engineer and document properly.
HIA Member
MBA NSW0476 300 300Quick Answer
A home extension in Ermington costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, City of Parramatta Council approvals, and construction under one fixed-price contract.
Extending Homes in Ermington
A home extension in Ermington grows the mid-century home between river and Metro — 450 to 700m² blocks where the wing adds what the 1950s-1970s plans never had.
The riverfront renewal has lifted the suburb's ceiling, the R3/R4 pockets get the zoning check, and the era fabric gets licensed handling.
At the $1.4M to $2.0M median, the wing beats the friction of upsizing in a corridor still repricing upward.
We build these fixed-price, licence HBL 487805C. Get our extension scope, with the zoning checked, before you commit.
Buildana manages the complete home extension process in Ermington — 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 Ermington from $150K
- City of Parramatta Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M — structural engineering included
- 1950s–1970s + 2010s+ apartments-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Bus to Rydalmere (Parramatta Light Rail, 2 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
The corridor is repricing
Ermington's riverfront renewal and Metro access keep lifting the suburb's ceiling — and the extended mid-century home rides that repricing while the original compact plans do not.
The wing adds the open living and bedrooms the era never drew.
Zoning and era handled
The renewal pockets carry R3/R4 value checked before any big wing, and the era fabric gets licensed handling.
Zoning check and licensed removal are both costed into the fixed price.
Home extension builder in Ermington — key facts
- Suburb
- Ermington, NSW 2115
- Council / LGA
- City of Parramatta Council (City of Parramatta)
- Primary zoning
- R2 Low
- Typical lot size
- 450–700m²
- Soil class
- M
- Median house price
- $1.4M–$2.0M
- Home era
- 1950s–1970s + 2010s+ 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.
How It Works
From First Call to Final Key
Walk through your Ermington home with our designer and structural engineer. We measure, photograph, and check the bones — footings, frame condition, roof structure.
⏱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 Ermington qualify for CDC — cleaner, faster, no neighbour notification. Second-storey additions typically need DA through City of Parramatta Council because of overshadowing and privacy assessments.
⏱Extension built from new footings to completion — connecting structurally to your existing home. Class M soil design managed.
⏱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.
⏱Quality Promise
We extend Ermington homes with a structural engineer on every job. Second storey, rear addition, multi-room — engineered and priced upfront.
Cost Guide
| Item | Estimated Range |
|---|---|
| Adding a master suite (1950s–1970s + 2010s+ apartments Ermington home) | $130,000 – $280,000 |
| Kitchen/living open-out to backyard | $150,000 – $350,000 |
| Second storey for teenagers/office | $280,000 – $550,000 |
| Extension + bathroom (growing family) | $200,000 – $400,000 |
| Full rear + roof tie-in (entertainer's zone) | $350,000 – $600,000 |
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
Ermington Extension — Free Consultation
Free design consultation for Ermington 2115. We'll assess your home, design the extension, and provide a fixed-price quote.
Start Your ProjectMore in Ermington
Other Buildana services in Ermington
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Ermington 2115. City of Parramatta Council regulations and local controls are covered on each page.