Can we stay in our Lansdowne home during the extension?

Yes for most ground-floor extensions — we dust-protect the existing home, seal off the active work zone, and run utilities through. Second-storey additions are harder; you usually need to vacate 4–8 weeks during roof-off and frame stand. We plan the occupancy strategy at contract stage so you're not guessing week to week.

How much does a home extension cost in Lansdowne?

A home extension in Lansdowne (2163) typically costs $150,000–$600,000+. Rear ground-floor extension: $150K–$300K. Second-storey addition: $300K–$500K. Large extension with full renovation: $400K–$600K+. Class M soil — structural engineering included. All Buildana extensions are fixed-price.

Can I extend my 1940s–1970s-era home in Lansdowne?

Yes — most 1940s–1970s-era homes in Lansdowne are good candidates for extension if the existing structure is sound. Buildana's structural engineer assesses existing footings, frame, and roof to determine what's achievable. Lansdowne blocks of 500–700m² typically have room for rear or upper-level extensions.

How long does a home extension take in Lansdowne?

Total 6–12 months: design (2–4 weeks), Canterbury-Bankstown Council approval (1–4 months depending on DA vs CDC), construction (3–6 months). Second-storey additions take longer than ground-floor extensions. Buildana provides a detailed timeline in every fixed-price contract.

Will I need to re-roof the whole house when I extend in Lansdowne?

Not always. Skillion or flat-roof rear extensions can tie into existing tile or sheet roofs without re-roofing the original. Pitched extensions matching the existing roof line usually need a section of original roof reworked at the junction — cost $4,000–$12,000. Full re-roofing only makes sense if the existing roof is at end-of-life (35+ years on tiles, 25+ on Colorbond). Worth checking the roof condition during the design assessment.

Can the extension have higher ceilings than the existing house in Lansdowne?

Yes — and it often makes the result feel intentional rather than tacked-on. Existing 1940s–1970s-era homes in Lansdowne typically have 2.4m ceilings; extensions go to 2.7m or higher with raked or coffered detailing. The transition is usually marked by a step in ceiling height at the junction, which reads as a design feature rather than an awkward mismatch. Adds 2–4% to extension cost for the additional wall framing.

What if my Lansdowne home is in a heritage conservation area?

Heritage conservation areas (HCAs) require Canterbury-Bankstown Council heritage assessment for any visible external changes. Rear extensions hidden from the street usually progress without issues. Front and side extensions need design that respects the streetscape — matching roof pitch, traditional materials, and complementary detailing. DA is mandatory (no CDC). Buildana works with heritage consultants on HCA properties — adds 4–8 weeks to approval but usually approves cleanly when designed properly.

Does extending add equivalent value to the cost in Lansdowne?

Well-designed extensions in Lansdowne typically return 70–90% of cost in immediate market value uplift — and often exceed cost over a 3–5 year hold as the broader market lifts. With Lansdowne medians at $1.0M–$1.3M, a $250K extension that converts a 3-bed cottage into a 4-bed family home with open-plan living usually moves the property comfortably into the next price bracket. Kitchen and bathroom quality drive most of the valuation gain.

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Home Extension Builder Lansdowne — From $150K Fixed Price

Fixed-price home extensions in Lansdowne 2163. Rear extension $150K–$300K, second storey $300K–$500K. Canterbury-Bankstown Council approvals managed. Free site consult.

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Quick Answer

A home extension in Lansdowne costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, Canterbury-Bankstown Council approvals, and construction under one fixed-price contract.

Extending Homes in Lansdowne

Lansdowne has post-war homes near Villawood with extension potential. R2 blocks, standard Canterbury-Bankstown Council approvals. Add living space at a practical cost. Buildana manages design and construction.

For a extension in Lansdowne, the economics are the framing question. Median price $1.0M–$1.3M; build cost on 500–700m² blocks scales by site conditions and specification. Class M ground (moderately reactive) keeps foundations honest — $15,000–$32,000 band — and blowouts on that line are the single most common reason fixed-price contracts elsewhere don't stay fixed. Buildana itemises the slab, structural engineering, and geotech work upfront so you see the actual cost in the contract. R2 Low Density zoning across Lansdowne keeps the suburb residential, which protects long-term value.

Buildana manages the complete home extension process in Lansdowne — 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 Lansdowne from $150K
Canterbury-Bankstown Council DA and CDC approvals managed
Ground floor, rear and second-storey additions
Class M soil — structural engineering included
1940s–1970s-era homes assessed for extension suitability
Connect new to existing — clean, matched finish
6-year structural warranty
Free design consultation — near Villawood (1 km) station

Why Extend Your Home in Lansdowne?

Lansdowne is a small residential suburb with established post-war housing on standard blocks between Villawood and Bass Hill.

Lansdowne's established streetscape and median house prices of $1.0M–$1.3M reflect a premium location within Canterbury-Bankstown. Building costs sit above the metro average, offset by stronger capital growth and rental returns. Transport access via Villawood (1 km) connects Lansdowne to the wider Sydney network. 1940s–1970s-era homes in Lansdowne often have good structural foundations worth building on. Extensions add living space at a fraction of the full rebuild cost. Class M soil (moderately reactive) is standard for Lansdowne — Buildana includes engineered slab design in every quote.

Home extensions across Canterbury-Bankstown suit the area's character housing stock — from 1920s–1960s bungalows in Canterbury and Earlwood to post-war homes in Bankstown and Revesby. Common projects include rear living extensions, upper-floor additions, and modernising period kitchens while retaining character elements. Heritage requirements may apply in some areas. Buildana manages design, approvals, and construction.

Planning Controls — Canterbury-Bankstown Council

Canterbury-Bankstown LEP 2023 & DCP. R2 zones: FSR 0.5:1, R3 zones: FSR 0.85:1, building height 9m, front setback 5.5m. Heritage conservation provisions apply in some suburbs. CDC available for eligible designs.

Home extension builder in Lansdowne — key facts

Suburb: Lansdowne, NSW 2163
Council / LGA: Canterbury-Bankstown Council (Canterbury-Bankstown)
Primary zoning: R2 Low Density
Typical lot size: 500–700m²
Soil class: Class M
Median house price: $1.0M–$1.3M
Home era: 1940s–1970s
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 Lansdowne — Local Context

What Lansdowne Soil Means for Your Extension

Most blocks across Lansdowne (2163) classify as Class M — moderately reactive. Translation for a home extension: foundation cost lands somewhere between $15,000–$32,000, depending on building footprint and how the engineer reads the borehole. Standard waffle raft slabs work on most Lansdowne sites, sized by an engineer to the actual classification. Buildana includes the geotech report, structural engineering, and slab design in every quote. No site allowance, no provisional sum.

What Canterbury-Bankstown Council Wants to See

Approval in Lansdowne comes down to documentation quality. Canterbury-Bankstown Council processes a high volume of residential applications, and the ones that get approved fast share three traits: clean drawings that show every required setback dimension on plan; a BASIX certificate that matches the actual specification (not a stand-in); and an engineering package sized correctly for the Class M ground. We prepare every document at full lodgement standard the first time.

Realistic Budget for Lansdowne

For a home extension in Lansdowne, the budget conversation starts with what you actually want versus what the site supports. Most quotes you'll get from volume builders strip out the things that matter on Class M soil — engineered slab upgrade, decent waterproofing, real drainage design, BASIX-compliant glazing — and present them as variations after you sign. We don't do that. Buildana's contract is fixed-price including everything required to deliver a extension that complies with NCC 2025 on a 500–700m² block in Lansdowne.

Designing for the Lansdowne Streetscape

Lansdowne's housing stock is predominantly from the 1940s–1970s. Villawood (1 km) from the nearest station. The local anchor is Lansdowne shops & local parks. For a home extension, the streetscape question matters more than most builders admit — a brand-new double-storey on a street of single-storey 1940s–1970s weatherboards will draw council attention on bulk and scale, even if technically compliant. Buildana designs the front elevation to read appropriately for the street while modernising the floor plan and structure behind it. Materials palette, roof pitch, fenestration rhythm — all chosen to settle into the existing rhythm rather than fight it.

What Recent Approvals Show

Canterbury-Bankstown Council's recent decisions for Extensions in Lansdowne reveal a clear pattern — applications with proper structural engineering tied to the existing footings on Class M soil and clean shadow analysis to neighbours' POS are progressing without RFIs. Sloppy lodgement adds 4-8 weeks of round-trip; clean lodgement doesn't.

Builder’s Take on Lansdowne

Extension or move? In Lansdowne, the maths usually favours extension once you factor in stamp duty ($40K–$60K), agent fees ($25K–$40K), and moving costs. An extension of $200K–$350K often delivers the space without the 12-week disruption of moving.

Canterbury-Bankstown Council setback and height rules apply to the extension, not the whole house. An older Lansdowne home that was built inside the setback might not be extendable to the boundary. We check that during feasibility so there's no expensive surprise at DA stage.

Lansdowne vs Nearby Suburbs

Lansdowne vs nearby suburbs — key metrics for extending.

Suburb	Median Price	Typical Lot	Soil Class	Era	Station
Lansdowne2163this suburb	$1.0M–$1.3M	500–700m²	Class M	1940s–1970s	Villawood (1 km)
Villawood2163	$900K–$1.15M	450–700m²	Class M–H	1960s–1980s	Villawood
Bass Hill2197	$1.0M–$1.25M	500–700m²	Class M	1960s–1980s	Bankstown (3 km)
Chester Hill2162	$950K–$1.15M	500–700m²	Class M	1940s–1970s	Chester Hill

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.

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Existing structure assessed for load path, timber condition, footing capacity

New portal frames or steel beams engineered to AS 4100 for spanning openings

Slab or footing for extension engineered for Class M reactive soil

Tied-in wall flashing, DPC continuity, and roof junction detail engineered

Acoustic separation between extended and existing zones where program requires

BASIX re-calculated for the entire combined envelope — not just the new portion

Canterbury-Bankstown Council setback, height and FSR checked against current DCP (often stricter than when original house built)

Temporary weatherproofing plan — nightly make-good during construction

How It Works

From First Call to Final Key

Free consultation at your Lansdowne home. We inspect the existing structure, check Canterbury-Bankstown Council's controls, measure available space, and discuss what you need.

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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.

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CDC (10–15 business days) or DA through Canterbury-Bankstown Council depending on scope. Structural engineering, BASIX, and all documentation prepared and lodged.

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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 Lansdowne.

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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.

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Quality Promise

Lansdowne home extension specialists: we work on your home while you live in it, weatherproof the site nightly, finish clean.

Fixed-price extension constructionNCC 2025 and BASIX compliantFull Canterbury-Bankstown Council complianceMatched old-to-new connectionWeekly progress updates6-year structural warranty

Cost Guide

Item	Estimated Range
Adding a master suite (1940s–1970s Lansdowne home)	$140,000 – $290,000
Kitchen/living open-out to backyard	$160,000 – $370,000
Second storey for teenagers/office	$290,000 – $580,000
Extension + bathroom (growing family)	$210,000 – $420,000
Full rear + roof tie-in (entertainer's zone)	$370,000 – $630,000

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

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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.

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Last updated: 1 April 2026

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