Home Extensions · Gladesville NSW 2111
Home extensions in Gladesville, done properly.
Rear and side house extensions for Gladesville 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.
Start here
Tell us about your Gladesville home.
No sales pitch, no obligation. Here is exactly what happens when you enquire:
- 1Answer a few quick questions. One at a time, takes about two minutes, so the first conversation is about your project rather than the basics.
- 2We call you within 24 to 48 business hours. A builder, not a salesperson. Then we walk your home and yard with you on site in Gladesville.
- 3You receive a written, itemised estimate. Real numbers for your home. If the project does not stack up, we tell you that too.
From our clients
Rated 5.0 on Google.
“We had Strava Group complete major renovation works on our property and were blown away with the quality. The attention to detail and overall finish were amazing.”
“Great communication, honest work, easy to work with, highly recommend to work with for any new build/renovations. If you are looking to get work done without worrying about shortcuts Strava Group is builder to use.”
“I highly recommend Strava Group to everyone great workmanship, reliable service, and I couldn’t be happier with the result.”
Extending out, not up
Opening a Gladesville home to the back and the light.
Strava Group builds home extensions in Gladesville: rear additions, side extensions and whole-of-back transformations that open the house to the yard. Gladesville sits between the river and Victoria Road on sandstone ridges, with Federation and interwar homes on the older streets and a big stock of 1950s and 60s brick houses on the slopes toward the water. The blocks are decent for how close the suburb is to the city, and the back of the house is usually where the room to grow is.
In Gladesville 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 in Gladesville.
Local knowledge
What we know about extending in Gladesville.
Every suburb builds a little differently. This is what matters when you are extending a Gladesville home.
Council
Gladesville is split between two councils. Most of the suburb sits in the City of Ryde Council area under the Ryde Local Environmental Plan 2014, and the streets nearest the river toward Hunters Hill sit in the Hunters Hill Council area under the Hunters Hill Local Environmental Plan 2012, where heritage and foreshore controls are tighter. Many detached homes on the Ryde side can use Complying Development through a private certifier, while the Hunters Hill side usually goes to a DA. We confirm which council and which pathway applies to your property before quoting. Current planning controls are published by City of Ryde Council and on the NSW Planning Portal.
Housing stock
Federation and interwar homes on the older streets near Victoria Road, a large stock of 1950s and 60s full brick and brick veneer houses on the slopes, and some later homes and apartments along the foreshore. Many of the older houses carry a lean-to or sunroom added decades ago. Those earlier additions usually come off and are replaced with something engineered.
Structure
Mid-century brick veneer homes are straightforward to extend once the load path is engineered. The older full brick and Federation houses need more care at the junction: we cut the openings cleanly, install engineered steel and tie the new frame into the existing brickwork properly. On the sloping blocks the new floor often sits on a suspended slab or bearers to meet the existing level, which is a detail that has to be right.
Yard and block
Blocks are typically 500 to 750 square metres, many of them falling toward the river or the creek lines. The slope is the thing that shapes the design: on the steeper blocks the extension steps down the site and the space underneath becomes useful. Side access varies, and where there is none materials come through the house and the programme changes.
Services and ground
Gladesville sits on Hawkesbury sandstone, often close to the surface, with shale clay on the higher ground. That makes footings predictable on some blocks and awkward on others where rock has to be cut, so the engineering is done for your site. New footings are detailed against the existing ones so the extension does not settle away from the house. Services along the rear boundary are located before design starts.
Value
Gladesville is a high value suburb where the river, the ferry and the proximity to the city keep demand strong. A properly built extension that turns a dated rear into open plan living with a yard or an outlook is worth a great deal here, and it is almost always cheaper than buying the bigger house down the street.
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 Gladesville 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 on Gladesville sandstone the challenge is usually matching new rock-founded footings to old ones that 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 Gladesville.
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.
Preliminaries are the costs that exist before a single wall moves: site fencing, temporary services, waste removal, insurances, engineering 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 Gladesville the value of the land tends to justify extensions in the middle and upper part of the band, with sloping sites and sandstone excavation adding engineering work. How much of the existing structure has to change is usually the largest single factor, followed by wet areas, access and rock.
Every project is quoted properly after a site inspection. These ranges are here so you can decide whether it is worth a conversation.
Nearby We build extensions across the Ryde district, Hunters Hill and the lower North Shore. Select a suburb for local council information and what extensions there typically cost. Looking for a different service in Gladesville? We also build second storey additions in Gladesville and home renovations in Gladesville.
Home extensions near Gladesville.
Ryde district and Hunters Hill
Good to know
Gladesville extension questions.
How much does a home extension cost in Gladesville?
Do I need council approval for an extension in Gladesville?
How long does a home extension take to build in Gladesville?
Can I live at home during the extension?
Should I extend out or add a second storey in Gladesville?
Will the extension match my existing brick house?
How will I know what is happening during my extension?
Are you licensed and insured?
Extend your Gladesville 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.
