Home Extension Builder Liberty Grove — Approved in 60 Days
Liberty Grove 2138 extensions with tight approval timelines. CDC where eligible (~15 days), DA via City of Canada Bay Council in 40–60 days. Construction 12–24 weeks depending on scope.
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MBA NSW0476 300 300Quick Answer
A home extension in Liberty Grove costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, City of Canada Bay Council approvals, and construction under one fixed-price contract.
Second-Storey & Rear Additions in Liberty Grove
Extension in Liberty Grove is restricted to internal alterations within estate design covenants. Townhouse and apartment additions limited by strata. Realistic budget $130K–$350K. Pre-construction 3–5 months.
Most Liberty Grove blocks run 200–400m² on Class M–H (Wianamatta Shale) / H (river/bay fall) ground. Extension feasibility depends on what's underneath the existing slab and whether the frame can carry a second-storey load — Buildana checks both before quoting, so what's in the contract is what gets built. Median price band: $1.6M–$2.8M. Nearest rail is Concord West (1 km).
Buildana manages the complete home extension process in Liberty Grove — 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 Liberty Grove from $150K
- City of Canada Bay Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- Class M–H (Wianamatta Shale) / H (river/bay fall) soil — structural engineering included
- 1990s–2000s master-planned-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Concord West (1 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Why Extend Your Home in Liberty Grove?
Liberty Grove is the master-planned gated community on the former Olympic Games site — contemporary villas and townhouses on 200–400m² blocks. Built 1990s–2000s. No heritage stock. Wianamatta Shale soil. Premium for security, master-planned amenity and Sydney Olympic Park proximity.
Building costs in Liberty Grove sit well below the Sydney metro average, making it an attractive location for value-conscious homeowners and investors. 200–400m² blocks at median prices of $1.6M–$2.8M offer strong land-to-build ratios. Transport access via Concord West (1 km) connects Liberty Grove to the wider Sydney network. 1990s–2000s master-planned-era homes in Liberty Grove often have good structural foundations worth building on. Extensions add living space at a fraction of the full rebuild cost. Class M–H (Wianamatta Shale) / H (river/bay fall) soil (moderately to highly reactive) is standard for Liberty Grove — Buildana includes engineered slab design in every quote.
Extension is the dominant scope across the Canada Bay riverside heritage peninsulas (Abbotsford, Chiswick, Cabarita, parts of Drummoyne, Mortlake) where KDR is restricted. Federation cottage additions, inter-war heritage extensions, river-fall heritage-grade work all common. Suspended slabs on river-fall sites; foreshore consent on direct waterfront lots. Heritage Council expects retention of stained glass, ornate plasterwork, slate roofing on protected streets. Apartment renovations the other major category — Rhodes high-rise, Concord West / North Strathfield station precincts, Liberty Grove townhouses. Realistic budget $300K–$900K for thoughtful 60–130m² addition; $700K–$1.8M premium river-fall heritage-grade work.
Planning Controls — City of Canada Bay Council
Canada Bay LEP 2013 & Canada Bay DCP 2017. R2 Low Density covers most older residential streets: FSR 0.5–0.55:1, building height 8.5–9m, front setback 6–7.5m, landscaped area 35–40%. R3 Medium Density along Lyons Road, Great North Road, Concord Road and Parramatta Road permits FSR up to 0.85:1. R4 High Density and B4 Mixed Use concentrated on Rhodes peninsula (Rhodes Waterside, Concord Road towers), Concord West / North Strathfield station precincts, and Five Dock village (gearing up for Sydney Metro West 2030 — Five Dock station precinct already designated TOD). Heritage Conservation Areas cover the riverside peninsulas (Abbotsford, Chiswick, Cabarita, Mortlake, Drummoyne) plus pockets in Concord, Five Dock, Russell Lea, Wareemba, Rodd Point. Tree Preservation Order LGA-wide. Wianamatta Shale soil with sandstone outcrops on the river-fall peninsulas — fall to Parramatta River, Iron Cove, Hen and Chicken Bay, Canada Bay drives suspended slab engineering on premium river-fall lots. Five Dock Sydney Metro West (under construction, opening 2030) is the LGA's signature planning event — station-precinct overlay opens density bonuses inside 400m of Five Dock station. Rhodes peninsula has industrial-legacy soil contamination management protocols on remediated former Union Carbide site.
Home extension builder in Liberty Grove — key facts
- Suburb
- Liberty Grove, NSW 2138
- Council / LGA
- City of Canada Bay Council (City of Canada Bay)
- Primary zoning
- R3 master-planned
- Typical lot size
- 200–400m²
- Soil class
- Class M–H (Wianamatta Shale) / H (river/bay fall)
- Median house price
- $1.6M–$2.8M
- Home era
- 1990s–2000s master-planned
- 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
Building in Liberty Grove — Local Context
Ground Conditions That Affect Your Build
Class M–H (Wianamatta Shale) / H (river/bay fall) is the rule across Liberty Grove — moderately to highly reactive clay. For your home extension, expect engineered footings in the $24,000–$42,000 range. The variables that shift you up or down inside that band: building footprint, number of storeys, point loads (heavy stone benchtops, masonry feature walls), and whether the adjacent stormwater system needs upgrading. Liberty Grove is close to Concord West (1 km) station — site access on tighter blocks adds a logistics premium, which is why we cost cranage and material delivery before signing, not after.
City of Canada Bay Council & Approval Pathway
Liberty Grove sits inside the City of Canada Bay LGA, governed by City of Canada Bay Council. For a home extension, the approval question is usually CDC vs DA. Extensions in Liberty Grove usually need a full DA through City of Canada Bay Council — typically 40–90+ days from lodgement, longer if neighbour notification triggers objections. Either way, we manage submission, RFIs, and re-lodgement in-house — you don't deal with the council.
Where the Money Goes on a Liberty Grove Extension
Cost breakdown for a typical extension in Liberty Grove: structure and frame around 30%, slab and foundations 8–14% (driven by Class M–H (Wianamatta Shale) / H (river/bay fall) soil), roofing and external 10–12%, services (plumbing, electrical, HVAC) 12–18%, fit-out (kitchen, bathrooms, joinery) 18–25%, and finishes (paint, tiles, flooring) 8–12%. The remaining 4–6% covers approvals, certifications, and site establishment. Buildana itemises every line so you see what you're paying for — no lump sums hiding margin.
Lifestyle Fit in Liberty Grove
Liberty Grove has a settled residential character. Concord West (1 km) from the nearest station. Local landmark: Liberty Grove village green. For families extending here, the design considerations that matter day-to-day: orientation for natural light (north-facing living wherever the lot allows), separation between adult and kids' zones, a kitchen that opens to outdoor entertaining, garage size that fits a real family vehicle plus storage, and a layout that doesn't require renovating again in 10 years as the kids grow. Buildana designs for the long arc of how families actually use a home, not just the showroom photo.
Building Activity in Liberty Grove Right Now
Liberty Grove is seeing steady residential activity — extensions are picking up as families choose to upsize their existing home rather than face stamp duty on a move. Buildana sits inside that pipeline — we know what's getting approved, what's stalling, and why.
Builder's Take on Liberty Grove
Second storey on a Liberty Grove home: the existing single-storey footings usually need reinforcement, which adds $15K–$40K. The roof comes off. The house is exposed for 4–8 weeks (weatherproofed nightly). Clients often underestimate the disruption — but the result is a doubling of floor area for 50% of the cost of a rebuild.
BASIX re-certification on extensions catches people out. Any extension over 50m² triggers BASIX on the combined envelope. Your existing home might be well short of 7-star, so the extension has to pull the whole house closer to compliance. That can mean insulation upgrades in the existing walls and ceiling.
Liberty Grove vs Nearby Suburbs
Liberty Grove vs nearby suburbs — key metrics for extending.
| Suburb | Median Price | Typical Lot | Soil Class | Era | Station |
|---|---|---|---|---|---|
| Liberty Grove2138this suburb | $1.6M–$2.8M | 200–400m² | Class M–H (Wianamatta Shale) / H (river/bay fall) | 1990s–2000s master-planned | Concord West (1 km) |
| Rhodes2138 | $1.4M–$2.5M (apartments dominant) | 150–500m² | Class M–H (Wianamatta Shale) / H (river/bay fall) | 2000s+ high-density | Rhodes (in suburb) |
| Concord West2138 | $2.0M–$3.8M | 450–800m² | Class M–H (Wianamatta Shale) / H (river/bay fall) | 1900s–1960s + apartments | Concord West (in suburb) |
Median price, soil class, and lot size shape build feasibility and final cost. Buildana assesses every site against these and other constraints during the free feasibility stage.
Have a question about your project?
Talk to our team — free site assessment and fixed-price quote.
Cost Guide
| Item | Estimated Range |
|---|---|
| Single-room addition (bedroom/study) | $54,000 – $130,000 |
| Kitchen/living extension | $140,000 – $320,000 |
| Master suite + ensuite addition | $120,000 – $250,000 |
| Second storey (full or partial) | $250,000 – $500,000 |
| Multi-room ground floor wrap | $320,000 – $540,000 |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
How It Works
From First Call to Final Key
Free consultation at your Liberty Grove home. We inspect the existing structure, check City of Canada Bay Council's controls, measure available space, and discuss what you need. You get a clear scope, budget range, and timeline before committing.
⏱Two design moves are usually on the table: match the existing house so the extension reads as original, or contrast with it so the new section is clearly modern. Both work — choice is aesthetic, and we'll show 3D renders of both before you commit.
⏱CDC (10–15 business days) or DA through City of Canada Bay Council depending on scope. Structural engineering, BASIX, and all documentation prepared and lodged. Construction Certificate obtained.
⏱Construction phase connects new to existing — footings, frame, roof tie-in, waterproofing at junction, internal fit-out and external finish. Staged works minimise disruption to your daily routine in Liberty Grove.
⏱Final inspection focuses on the integration: paint blend, flooring transitions, ceiling height, junction waterproofing, sound transmission. The extension shouldn't feel bolted on — it should feel like the house was always meant to be this size.
⏱Our Team
Oliver Alameri
Founder / Director / Builder · MPropDev · PhD Student
Ahmad Alameri
Accounts Manager
Claire Wendell
Project Manager
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Liverpool, NSW
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Free design consultation for Liberty Grove 2138. We'll assess your home, design the extension, and provide a fixed-price quote.
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