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Extension types
Single storey rear extensions
A single storey rear extension opens up the back of your home, typically to create a large kitchen-diner or family room with glazed doors onto the garden. It’s often the best-value way to add everyday living space, and many can be built without a full planning application.
- Design
- Planning
- Building regs
- Build
- 5.0 Google ratingRated by our clients
- Planning to completionOne team, every stage
- Wyboston LakesBased near St Neots
- Cambs & BedsHomes and businesses
Is it right for you?
What a single storey extension is great for
- Open-plan kitchen and dining
- Family rooms with garden access
- Utility rooms and downstairs WCs
- Bright spaces with roof lanterns or rooflights
Things to think about
- Roof style: flat roof with a lantern, pitched, or a mix
- Glazing: sliding or bi-fold doors and rooflights for natural light
- Removing rear walls usually needs steel beams and building regulations approval
- Drains and manholes near the back of the house can affect the design
We had the pleasure of working with Tier One Developments (J P Building) on a large extension, full renovation and remodel of our family home. We are incredibly pleased with the results!
FAQs
Single storey rear extensions: your questions
Can’t see your question? Call us on 01480 272 600 or send us a message.
Do I need planning permission for a single storey rear extension?
Often not. Within permitted development limits (3m deep for semi-detached and terraced houses, 4m for detached, up to 4m high) you can usually build without a planning application, though we recommend a Lawful Development Certificate. Larger designs or homes in conservation areas typically need planning permission.
How long does a single storey extension take to build?
Most take a few months on site, after design and approvals. We give you a realistic programme with your quote and keep you updated throughout.
Can I stay at home during the build?
Usually, yes. Most of the work happens outside until the new space is joined to the house, and we plan the sequence to keep disruption to a minimum.
Guides
Helpful reading on single storey projects
GuidesDo I need planning permission for an extension?Many extensions can be built under permitted development, without a full planning application. Here’s how the rules work and when you’ll need permission.Read article GuidesSingle or double storey extension: which is right for your home?Both can transform a home. We compare space, cost, planning and disruption to help you choose.Read article 
GuidesHow much does a house extension cost? Planning your budgetEvery extension is different, but the same factors drive the cost. Here’s what affects your budget and how to avoid surprises.Read article More options
Other types of extension
Double storey extensionsAdd living space downstairs and bedrooms or a bathroom upstairs, often for less per square metre than a single storey.Find out more 
Side return extensionsMake use of the narrow passage beside your house to widen the kitchen and transform a dark, awkward layout.Find out more 
Wraparound extensionsCombine a side and rear extension in an L shape for the biggest possible open-plan ground floor.Find out more 
Kitchen extensionsCreate the kitchen-diner you’ve always wanted, designed, built and fitted by one team.Find out more 
Garage conversionsTurn an under-used garage into a living room, office, gym or self-contained annex.Find out more 
Loft conversionsAdd a bedroom, en-suite or office in the roof space without losing any garden.Find out more 
Garden rooms and orangeriesLight-filled spaces that blur the line between house and garden, built to be used all year round.Find out more 
Porches and front extensionsImprove your home’s kerb appeal and add useful space at the front, from a porch to a ground floor bedroom.Find out more
Single storey rear extensions near you
- Extensions in St Neots
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Planning a single storey project?
Let’s talk about your plans
Honest advice, clear pricing and one team from drawings to handover. Your quote is free and there’s no obligation.