Do I need council approval for an extension in Haberfield?

Yes, and in Haberfield it is always a Development Application through Inner West Council with heritage assessment, because effectively the whole suburb sits inside the Haberfield Heritage Conservation Area. A single storey rear extension that sits behind the main roofline and is not visible from the street is the design that gets through. We prepare the application with heritage consultants who know the area and we confirm the pathway for your property before quoting.

How long does a home extension take to build in Haberfield?

Most extensions run 12 to 20 weeks on site. Design and approvals happen before that: a CDC takes about 4 to 8 weeks, and a DA can take up to 6 months, depending on council. We give you a programme with the quote, not after you have signed.

Can I live at home during the extension?

Usually yes. Because the work is concentrated at the rear or side, most Haberfield families stay in the house for most of the build, with a shorter disruptive period when we break through and connect the new space to the old. We plan the breakthrough stage with you so you know exactly when it is coming.

Should I extend out or add a second storey in Haberfield?

In Haberfield, extending out is almost always the answer. The conservation area protects the single storey streetscape, so a visible second storey on most Haberfield houses is very hard to get approved. Where more space is needed than the rear can give, attic conversions within the existing roof are sometimes possible. We tell you honestly what your block and the controls will allow before you spend money on design. A house extension and a second storey are different builds with different engineering, and we quote both honestly.

Will the extension have to match my Federation house?

Not by copying it. In the Haberfield conservation area council generally supports a rear extension that reads as clearly new and sits quietly behind the original, respecting its scale, materials and roofline without imitating the fretwork. Face brick and terracotta can be referenced without being faked. What must always match is the standard of the junction between old and new, which is where our detailing does its work.

How will I know what is happening during my extension?

Two ways. You get a weekly update from the builder running your job, whether or not there is good news in it. And you get access to our client portal, where you can log in any time to see your documents, selections, variations and job status. No chasing, no phone tag, no wondering.

Are you licensed and insured?

Yes. Strava Group holds NSW Builder's Licence 487370C and carries public liability insurance and Home Building Compensation Fund cover on all residential work over the statutory threshold. You can verify the licence directly through Verify NSW at verify.licence.nsw.gov.au.

Timber roof and wall framing in a renovation

Home Extensions · Haberfield NSW 2045

Home extensions in Haberfield, done properly.

Rear and side house extensions for Haberfield homes by a licensed extension builder. Most extensions run $70,000 to $300,000 depending on size and how much of the existing house has to change, itemised quote, honest programme, one builder from concept to handover.

Get Your Extension Assessed Call 0450 605 080

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487370C

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Inner West Council areaNSW Builder’s Licence 487370CItemised quotesClear inclusions & exclusions0450 605 080

Extending out, not up

Extending a Haberfield home without getting it wrong.

Strava Group builds home extensions in Haberfield: rear extensions and whole-of-back transformations that open the house to the garden. Haberfield is the Garden Suburb: virtually the entire suburb is a heritage conservation area, the Federation houses were built as a set piece, and the streetscape is protected because it is genuinely worth protecting. An extension here answers to council, to the street and to the house itself, so it has to be designed and built with more care than almost anywhere else in the inner west. The good news: the controls support a well designed rear extension, and the blocks have the depth for one.

In Haberfield we regularly deliver:

Rear extensions and additions
Side extensions on wider blocks
Open plan kitchen, dining and living
Alfresco and indoor-outdoor connections
New master suites and family rooms
Laundries, mudrooms and storage done properly
Structural openings between old and new
Exterior upgrades to tie old and new together

Thinking about going up instead? That is a different build with different engineering, and we do that too: see second storey additions.

Haberfield houses were built to be looked at from the street, and the rules exist to keep it that way. The best extensions keep the front exactly as it is and do all their work at the back, where the garden is.

Kitchen with tall timber-look cabinetry, white cabinets and a new timber-framed window

Quick Answer

Most home extensions in Haberfield run $70,000 to $300,000 depending on size and how much of the existing structure has to change, at roughly $2,500 to $4,500 per square metre for ground floor work, with around $30,000 in preliminaries (design, engineering and council approvals, plus site set-up) on top. The heritage DA process and the standard of the original houses tend to put Haberfield projects in the middle and upper part of the band.

Local knowledge

What we know about extending in Haberfield.

Every suburb builds a little differently. This is what matters when you are extending a Haberfield home.

Council

Haberfield is in the Inner West Council area under the Inner West Local Environmental Plan 2022, and effectively the whole suburb sits inside the Haberfield Heritage Conservation Area, one of the most significant in Sydney. That removes the Complying Development pathway, so extensions go through a Development Application with heritage assessment. Rear extensions that sit behind the main roofline, are not visible from the street and respect the single storey character are well supported. We confirm the pathway for your property before quoting. Current planning controls are published by Inner West Council and on the NSW Planning Portal.

Housing stock

Federation houses almost throughout, built as the original Garden Suburb from the early 1900s: face brick, timber fretwork, terracotta roofs, gardens to the street and no front fences on many blocks. Many carry a lean-to kitchen or sunroom added decades ago that was never built to last. Those earlier additions usually come off, and the replacement has to earn its place behind a house this good.

Structure

Haberfield homes are typically double brick on timber floors with hardwood framing and terracotta roofs, and the original workmanship is often excellent. Cutting a new opening into a double brick rear wall needs an engineered lintel and careful propping, and the new floor has to meet the existing suspended timber floor exactly. The detailing standard of the original house sets the bar for everything we add to it.

Yard and block

Blocks are typically 450 to 700 square metres and often deeper than they look, which is what makes a proper rear extension possible while keeping a real garden. Side access varies, and where it is tight materials come through the house and the programme changes. Street trees and garden character are part of the conservation area, so the design keeps the landscape in mind, not just the building.

Services and ground

Haberfield sits on shale derived clay soils that move with moisture, with lower ground toward Iron Cove and Hawthorne Canal where flood controls can apply. The footings under a 1910s house were never engineered, so new footings are designed for the site and detailed against the old ones so the extension does not settle away from the house. Old sewer and stormwater lines are located before design starts.

Value

Haberfield is one of the most tightly held suburbs in the inner west, and the conservation area is exactly why: the streetscapes cannot be rebuilt, so the houses hold their value. Buyers pay a premium for an intact Federation front with a properly built modern rear, and the worst thing you can do here is a cheap addition that fights the original. A considered rear extension is the safest improvement in the suburb.

Start here

Tell us about your Haberfield home.

No sales pitch, no obligation. Here is exactly what happens when you enquire:

One at a time, takes about two minutes, so the first conversation is about your project rather than the basics.

Start Your Enquiry Call 0450 605 080

The Strava standard

How we build differently.

An extension lives or dies at the junction between old and new. We build for longevity, and on every Haberfield extension we run:

Every new-to-existing junction properly detailed

This is where most extensions crack, leak and part company with the house. It is almost always a detailing shortcut, not settlement. Ours get a proper structural tie, flashing and movement detail.

The existing structure gets rectified, not covered

Where the extension meets the house, we screw off and re-brace the adjoining structure, tying new and old together so the whole building moves as one and future cracking is designed out, not painted over.

Footings matched to the ground, not the minimum

New footings are engineered for your soil and detailed against the existing ones, because differential movement between old and new slabs is the classic extension failure, and it matters more on a century-old house whose original footings were never engineered.

Furring channels for a dead flat finish

Where new ceilings and walls run through to existing rooms, furring channels give one level plane across both, so you cannot see where the house ends and the extension begins.

Waterproofing is a documented hold point

New wet areas are inspected and photographed before a single tile goes on, to AS 3740, and new roof-to-old-roof junctions get the same treatment.

Everything photographed before it is covered

You receive the record at handover, so in ten years you know exactly what is behind your walls and under your floor.

Before starting Strava Group, I spent seven years on the tools as a carpenter and five years running sites. The failures I kept seeing in extensions were always at the join: cracked cornices along the old wall line, roofs that leaked where new met old, floors that stepped as slabs settled differently. None of it was illegal. All of it was avoidable. None of this shows up in a finished-room photo. All of it shows up in year seven.

Honest numbers

What a house extension actually costs in Haberfield.

Most builders will not put numbers on a website. We will, because the alternative is wasting your time and ours across three meetings before anyone mentions a figure.

Item	Typical range
Home extension, depending on size and scope	$70k–$300k
Ground floor extension work	$2,500–$4,500 /m²
Preliminaries, on top of build cost	approx. $30,000

Preliminaries are the costs that exist before a single wall moves: design, engineering and council approvals, plus site set-up such as site fencing, temporary services, waste removal, insurances and supervision. They are real, they are unavoidable, and a quote that does not show them separately has either buried them or forgotten them.

In Haberfield the heritage process and the standard the original houses set tend to put projects in the middle and upper part of the band, with double brick structure and tight access adding to it. How much of the existing structure has to change is usually the largest single factor, followed by the heritage design work and wet areas. We give you a realistic figure early rather than a low one that grows.

Every project is quoted properly after a site inspection. These ranges are here so you can decide whether it is worth a conversation.

Good to know

Haberfield extension questions.

From our clients

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Nearby

Home extensions near Haberfield.

We build extensions across Inner West and the surrounding suburbs. Select a suburb for local council information and what extensions there typically cost.

Inner West

Home Extensions Ashfield Home Extensions Five Dock Home Extensions Leichhardt Home Extensions Croydon Home Extensions Summer Hill

All Sydney extension areas

Looking for a different service in Haberfield? We also build second storey additions and home renovations in Haberfield.

Extend your Haberfield home properly.

Ready for more room?

Tell us about your property and what you want to add. We respond within 24 to 48 business hours with honest advice and real numbers, no cost, no obligation.

Get Your Extension Assessed Call 0450 605 080