in TraffordMore room for the way you live, without moving house. This is the complete guide to extending your home in Trafford, from the local builders who design and build it with our own team, for a fixed price agreed before work starts.
A house extension adds new floor space at the back or side of your home, usually for a bigger kitchen, a family room or extra bedrooms. We handle the whole job: drawings, structure, plumbing, electrics, plastering, tiling, joinery and decorating.
The most popular choice in Altrincham and Sale: the back of the house opened into one bright kitchen, dining and living space, often with bifold doors and a roof lantern.
Many fall under permitted development, so they can often start without a full planning application.
The narrow passage beside many semi-detached and terraced houses is wasted space. A side return fills it; a wrap-around joins side and rear into one L-shaped room.
On a shared wall we serve the party wall notices for you.
Ground and first-floor space in one build, or a new room over a garage. The dearest of the three, it adds bedrooms and a bathroom without moving house.
These usually need planning permission from Trafford Council, which we prepare and submit.
Areas we cover
Based in Altrincham, we build in every part of the borough, from Victorian terraces in Stretford to family homes in Hale and Bowdon, and we know how Trafford Council handles planning, Building Control and conservation areas. We also build across Manchester and Salford.
Types of extension
Extensions vary in style, purpose and materials. Here is what we build, and what each one is best for.
A rear or side extension on one level, ideal for a larger kitchen or open-plan dining area.
Adds space on both the ground and first floor in one build.
Mostly glass, for a sunroom or garden room full of light.
More brickwork than a conservatory, with a solid roof and a lantern for light.
Turns the roof space into extra bedrooms, an office or a place to relax.
New living space below ground where building out or up is not possible.
Builds a new room over a garage or an existing single-storey section.
Fills the unused side passage of a semi-detached or terraced house.
Glass panels and minimal frames that bring daylight deep into the home.
Combines a rear and side extension into one generous L-shaped space.
Not sure which suits your house? See our recent projects in Trafford, read the Planning Portal guide to extensions, or ask us at the site visit.
Most homeowners worry about the same things: hidden costs, losing a deposit, poor work and paperwork that comes back to bite. Here is our written answer to each one.
A fixed contract price, no hidden costs. Your quote is itemised line by line and becomes the fixed contract price. Nothing is added later without your written approval, and allowances such as kitchens or tiles are shown separately so you can see exactly what is included.
Payments follow finished work. You never pay far ahead of the work. Payments are made in stages as each part is finished and, where it applies, signed off by Building Control. The final 5% is paid only six months after handover, once everything has proved itself.
Certified plumbers and electricians. Plumbing and heating are carried out by qualified, certified plumbers and any gas work by registered gas engineers. New circuits are installed by qualified electricians to Part P. You receive every certificate and guarantee for your records.
A 15-year guarantee on windows and doors. We fit windows and doors made to current UK standards for safety and energy performance, and they come with a 15-year guarantee, so your new glazing is covered long after we leave.
Licensed waste disposal and full insurance. Waste is collected only by licensed carriers, with a waste transfer note for every load; a homeowner can be fined if their waste is fly-tipped. We hold public liability and employer's liability insurance on every job and will show you the certificates before work starts.
We have built extensions and renovations in Trafford for over 20 years. We are members of the Federation of Master Builders, rated 9.8 out of 10 on Checkatrade and 5-star on Rated People, and our own trades do the work, with one project manager from survey to handover.
Our base is on Devonshire Road in Altrincham, so we know Trafford Council's planning, Building Control and conservation area rules, and we are close by if anything needs attention.
As a guide, a single-storey extension in Altrincham and Trafford typically costs £1,440 to £3,000 per m², so a 20m² extension usually comes to around £32,000 to £56,000. A two-storey extension of about 60m² is typically £86,400 to £180,000. Because material prices have risen with inflation, your final price is confirmed after the free site visit, once your materials are chosen.
Prices are a guide, updated October 2026 from our recent Trafford projects. With inflation in material prices, your final price is set after the site visit and your choice of materials, then fixed in your written quote. Prices include labour and standard materials; kitchens, bathrooms and flooring are priced separately.
Many single-storey rear extensions in Trafford can be built without planning permission under permitted development. Two-storey extensions, larger builds and homes in conservation areas usually need Trafford Council approval. Almost every extension needs building regulations approval.
We check your house against the rules at the site visit and, if needed, prepare and submit the application to Trafford Council. A householder application usually takes about eight weeks to decide.
Permitted development lets you extend without a full application if the extension meets the national limits and your house still has these rights. Flats, maisonettes and many homes in conservation areas do not.
An attached house can usually extend up to 3m at the back, or 4m for a detached house, with a maximum height of 4m. Up to 6m or 8m is possible through a prior approval application.
If you share a wall with a neighbour, the Party Wall Act 1996 applies. Notice must be served at least two months before work on the shared wall, or one month before digging foundations close to theirs.
Building regulations cover foundations, structure, insulation, drainage, fire safety and ventilation. Building Control checks the work at each key stage and issues a completion certificate, which you will need when you sell. See the GOV.UK guide to building regulations approval.
At the free site visit we tell you whether your extension is likely to need planning permission, a lawful development certificate or prior approval, and we confirm it in writing with your quote. You can also check first with the Planning Portal interactive house guide.
Permitted development limits, Building Regulations and the Party Wall Act are the same across England, so this guide uses Trafford as the example. What changes from one council to the next is local, and we check it for your street at the free site visit.
Once drawings and approvals are in place, a complete extension, finished inside down to the decorating, takes up to about three months on site, depending on its size and the number of floors. Spring is the best time to start: foundations and brickwork go in while the weather is mild, and the shell is watertight before the autumn rain.
First, we come to your home anywhere in Trafford, listen to what you want, measure up and check what planning and Building Control will need.
Then drawings and structural calculations are prepared and you receive a fixed, itemised quote with a clear schedule. Nothing starts until you are happy with both.
Before we dig, we submit planning or a lawful development check if needed, apply for Building Control and serve party wall notices on your neighbours.
On site, foundations, drainage, walls, steel, roof, windows and doors, then first fix, plastering and second fix. Mortar and concrete are not laid below about 3°C, so in winter we plan around frost.
At the end, a final inspection, a professional clean and the completion certificate. We walk you through the space and stay on call for anything that needs adjusting.
How we build an extension in Trafford · video coming soon · captions on
In Hale we added a new floor to a family home, rebuilding the roof and creating extra bedrooms while keeping the house in character with the street.
A single-storey extension typically costs £1,440 to £3,000 per m², so 20m² usually comes to around £32,000 to £56,000, and a two-storey extension of about 60m² is usually £86,400 to £180,000. With inflation in material prices, we confirm your final price after the free site visit and your choice of materials, in a fixed written quote with no hidden costs.
A 3m x 4m (12m²) single-storey extension in Trafford starts from about £17,300 at our starting rate of £1,440 per m². Glazing, a roof lantern and ground conditions can raise it, so we confirm a fixed price after a free site visit.
Not always. Many single-storey rear extensions fall under permitted development within size limits. Two-storey extensions, larger projects and homes in conservation areas usually need Trafford Council approval. We tell you at the free site visit, and if approval is needed we can handle the application with qualified architects, or work with an architect you choose.
Yes. Almost every extension needs building regulations approval, whether or not it needs planning permission. Building Control checks the work at each key stage, and we make sure it meets every requirement.
Up to about three months on site, depending on the size and the number of floors. That covers the complete job: structure, roof, plastering, decorating and every finishing detail, and even a full house renovation together with a full extension is usually finished within three months. Drawings and approvals come first and can take two to three months, so designing in winter means building in spring.
Yes, most families do. We build the new structure first and only break through into the house near the end, sealing off dust. If the kitchen is affected, we plan a temporary kitchen area with you.
Yes. For semi-detached and terraced houses we prepare and serve the party wall notices, talk to your neighbours and arrange a surveyor if one is needed, one to two months before work starts.
Yes. We arrange drawings, structural calculations, planning and Building Control, then build and finish the extension with our own team, with one project manager throughout.
All of Trafford, including Altrincham, Broadheath, Timperley, Hale, Hale Barns, Bowdon, Sale, Ashton upon Mersey, Brooklands, Stretford, Old Trafford, Gorse Hill, Urmston, Flixton, Davyhulme and Partington, and also Manchester and Salford.
Start with the kind of work. It takes about a minute, and the visit is free anywhere in Trafford.
Call Deluxe Renovation on 07542 230822. We visit, check planning and give you a fixed quote.
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See what families in Altrincham, Hale and Sale say about their extensions, or leave us a short review if we have worked for you.
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Find us on Devonshire Road in Altrincham, see the area we cover across Trafford and read what local homeowners say about our work on our Google Business Profile.
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