Single storey extensions that open up the back of your house
The most popular project we build: a rear, side or side return extension that turns a separate kitchen and a dark dining room into one bright space facing the garden. Built across Nuneaton, Bedworth, Hinckley, Coventry and Warwickshire by one accountable contractor.
- FMB Approved
- TrustMark registered
- 5 year workmanship guarantee
- Rated 5.0 on Google
Single storey kitchen extension, Coventry
- FMB Approved
- TrustMark registered
- £5m public liability insurance
- 5 year guarantee, optional 10 year insurance backed
- Free, no obligation consultation
Three ways to extend on one floor
Which one suits you depends on the plot, the house and what you want the room to do. We will tell you plainly at the first visit.
Rear extension
A straight projection across the back of the house. The simplest structure, the easiest to get under permitted development, and the natural home for a kitchen diner with bifolds to the garden.
Rear extensions →Side or side return
Fills the gap down the side of a semi or the narrow return beside a terrace. Adds width rather than depth, which often makes a bigger difference to the kitchen layout than people expect.
Wraparound
Rear and side combined into an L shaped space. The most dramatic change to the ground floor, usually with a full knock through of the original rear and side walls on steel beams.
What it costs in 2026
Honest ranges, so you can see where a project like yours is likely to sit before we price it properly.
Single storey extension
A 15 to 25 m² rear or side extension, including VAT. Most kitchen diners sit here.
Find out more →Larger single storey or wraparound
25 to 40 m² of new ground floor space, often with bifolds, roof lanterns and a knock through into the existing house.
Find out more →Independent QS takeoff
Measured line by line from your final drawings by an independent quantity surveyor, refunded in full if you appoint us. It becomes the budget your fixed quotation is built from.
Figures include VAT and cover the building work finished to a good standard. Kitchens, bathrooms, bespoke glazing and landscaping are priced separately as provisional sums so you can see them. They are a realistic planning range, not a quote: your number comes from your own drawings and an itemised breakdown. See our project investment guide for the full picture.
What a Parker Grears single storey extension includes
Structure and shell
Foundations designed for the ground you have, drainage, cavity walls to match the existing brick or render, warm roof or vaulted ceiling, and the steel work to open into the house.
Glazing and light
Bifold or sliding doors, roof lanterns and flat roof lights, all priced as separate lines so you can choose the specification that suits the budget.
Services and finishes
Electrics, plumbing, heating extended from your existing system or underfloor heating, plastering, flooring, skirtings and decoration, ready to live in.
Approvals and sign off
Building regulations drawings, structural calculations, building control inspections at every stage and the completion certificate you will need when you sell.
How a project runs with us
Nobody signs anything until the price is real. Every stage is a small step, so you are never asked for a big commitment on a vague number.
Free consultation and budget
We visit, look at the property and talk through what you want. You get a written budget range built from your ideas or early drawings, at no charge.
Design and approvals
If you need drawings we introduce architects we trust, then handle planning, building regulations and the structural engineer with them.
Independent QS takeoff
Before the price is fixed we recommend an independent quantity surveyor measures the final drawings line by line. It costs £240 plus VAT, refunded in full if you appoint us, and you keep the document either way.
Fixed quotation and contract
The agreed takeoff becomes the project budget. You get a fixed quotation built from it, a written contract and stage payments tied to progress, never paid ahead of the work.
The build
One point of contact, a schedule at the start of every week, both directors’ numbers, and any change agreed in writing before it happens. Sites are kept clean for you and your neighbours.
Handover and guarantee
Building control sign off, certificates and a 5 year workmanship guarantee as standard, with an optional 10 year insurance backed guarantee available.
Featured project
Single storey rear extension with a new living room
A single storey rear extension in Bulkington creating a new living room, finished so it reads as part of the original house rather than an add on.
What homeowners say
Every review below is a real, named Google review. Rated 5.0 on Google. Read them all on Google.
“We had a new extension and kitchen and the whole project totally surpassed our expectations. Everything was done to a very high standard from start to finish. Sean and Paul were great with every detail of the project no matter how big or small.”
“Sean, Paul and the entire team were amazing during our kitchen renovation. The building work was completed on time, and even managed to resolve an unexpected problem we encountered along the way. All the guys left our house clean and tidy during and after the work was completed.”
“At the start of each week we were given a schedule and that’s what happened, no false promises made. Their attention to detail, costs, and timing was just right, it felt like they were doing the work on their own properties they took so much care.”
Frequently asked questions
How much does a single storey extension cost?
Most 15 to 25 m² single storey extensions we build come out between £50,000 and £80,000 including VAT, finished to a good standard. Larger single storey and wraparound extensions of 25 to 40 m² run from £80,000 to £130,000. That works out at roughly £3,000 to £3,300 per square metre including VAT for the building work, before the kitchen, bespoke glazing or landscaping.
Do I need planning permission for a single storey extension?
Often not. A single storey rear extension of up to 4 metres on a detached house, or 3 metres on a semi detached or terraced house, usually falls within permitted development, and up to 8 metres or 6 metres under the larger home extension prior approval route. Height, eaves and boundary limits apply, conservation areas and listed buildings are excluded, and some newer estates have had permitted development removed. We check your address before design starts.
How long does a single storey extension take to build?
Typically 10 to 14 weeks on site from the first dig to handover, depending on size and specification. We give you a written programme with the quotation and a schedule at the start of every week.
Will I need a structural engineer?
Yes, whenever the extension opens into the existing house. The engineer designs the steel beams and padstones and provides calculations for building control. We arrange this as part of the design stage.
Can you build in winter?
Yes. Groundworks and brickwork carry on through the winter with the right materials and a bit of care around frost. Most of our winter extensions are watertight before Christmas and finished inside in the new year.
What is included in the price?
Everything needed to hand over a finished, signed off room: foundations, drainage, walls, roof, insulation, windows and doors, electrics, plumbing and heating, plastering, skirtings and decoration, plus building control fees and inspections. Kitchens, bathrooms, bespoke glazing and landscaping are shown as separate provisional sums so you can see them and choose.
Related services
Parker Grears is the principal contractor on every job: our own people alongside established specialist trades, with one point of responsibility for the site, the programme and the finish.
Where we work
We are based in Nuneaton and work across Warwickshire, Leicestershire and the wider Midlands. Most of our projects are within forty minutes of the yard, which keeps the same people on your site from the first day to the last.
Tell us about your project
Call, WhatsApp or send the form. Sean or Paul will come back to you within one working day, and the first conversation is always free and without obligation.
024 7518 5349- Message us on WhatsApp
- info@parkergrears.com
- 47 Northumberland Avenue, Nuneaton CV10 8ER
- Monday to Saturday, 9am to 5pm
Book a free single storey extension consultation
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