Home Extension Builder Harris Park — From $150K Fixed Price
Fixed-price home extensions in Harris Park 2150. Rear extension $150K–$300K, second storey $300K–$500K. City of Parramatta Council approvals managed. Free site consult.
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MBA NSW0476 300 300Quick Answer
A home extension in Harris Park 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.
Second-Storey & Rear Additions in Harris Park
Any home extension in Harris Park has to reckon with history — literally Australia's oldest. The suburb holds the country's earliest European-built precinct, with Old Government House, Experiment Farm and Elizabeth Farm anchoring heritage protections that are strict and non-negotiable near the historic core. Blocks are tight too, at 200–500m², so extension design here is a precision exercise rather than a sprawl.
It's still very doable. Away from the protected precinct, rear extensions on the 1900s–1970s cottages work well, and the early double-brick stock carries additions confidently once engineered. With Parramatta CBD one street away and apartment towers rising around the station, a well-extended house on its own land in Harris Park becomes rarer — and more valuable — every year. Have us check your street's controls before you plan a thing.
Buildana manages the complete home extension process in Harris Park — 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 Harris Park from $150K
- City of Parramatta Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M — structural engineering included
- 1790s heritage + 1900s–1970s + apartment towers-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Harris Park (T1, in suburb) / Parramatta CBD adjacent station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Precision on the oldest streets
Harris Park's 200 to 500m² blocks make the extension a designed-to-the-metre exercise — rear additions on the early cottages, engineered onto double-brick that carries confidently, with the historic precinct's controls checked street by street.
A house on its own land beside Parramatta CBD gets rarer every year the towers rise.
Heritage and fabric handled
Near the protected core the controls are strict and non-negotiable — I confirm your street's position before design money is spent. Lead paint joins asbestos on the older fabric, licensed processes both.
The heritage check and the licensed strip-out are both costed up front.
Home extension builder in Harris Park — key facts
- Suburb
- Harris Park, NSW 2150
- Council / LGA
- City of Parramatta Council (City of Parramatta)
- Primary zoning
- R2 Low
- Typical lot size
- 200–500m²
- Soil class
- M
- Median house price
- $900K–$1.6M (apartment-led)
- Home era
- 1790s heritage + 1900s–1970s + apartment towers
- 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
Everything that has to be right before we touch the ground. Walk through your Harris Park 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.
⏱The Harris Park construction phase. Fixed price, programmed, supervised. Most rear extensions in Harris Park 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. 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.
⏱The job isn't done when the site's clean; it's done when you have keys, certificates and warranties. 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.
⏱Quality Promise
Buildana's Harris Park home extension process: assess the existing structure, design the addition, approve, build. Fixed price throughout.
Cost Guide
| Item | Estimated Range |
|---|---|
| Small rear extension (up to 30m²) | $95,000 – $190,000 |
| Medium rear/side extension (30–60m²) | $190,000 – $340,000 |
| Large ground-floor extension (60–100m²) | $340,000 – $530,000 |
| Second-storey addition (60–120m²) | $290,000 – $580,000 |
| Wrap-around (ground + 1st floor) | $530,000+ |
| Structural engineering & tie-in | Included |
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
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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
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Fatima Al-Rashid
Liverpool, NSW
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Last updated: 1 April 2026
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Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Harris Park 2150. City of Parramatta Council regulations and local controls are covered on each page.