Estates drawn to keep cars and people apart
Northampton tried out new ideas about the car earlier than most towns. Eastfield, designed in 1953 by the borough architect J L Womersley, used a limited form of the Radburn layout, where footpaths and roads are kept separate. When the town was expanded as a new town after 1968, the estates of Northampton East were planned on the same principle.
The Town and Country Planning Association's profile of the town adds a detail that matters to anyone thinking about the garage. Car dependency on the new town estates is higher than in the rest of Northampton, and buses are harder to reach. Give up the garage there and the car still needs a home.
The old borough adopted its own Northampton Parking Standards SPD in November 2019. It sits on top of the county standards from 2016 and adds local guidance, electric vehicle charging among it. The county document is blunt about garages on new estates: so many end up as storerooms or extra rooms that it won't count them as parking. None of that overrides a condition on your own house, so dig out the original permission and read every line.
If the plan is a new drive across the front, West Northamptonshire Council's rules for a dropped kerb come first. It won't allow a second access where one already exists, the crossing has to be at least 10 metres from a junction or sharp bend, and speed humps outside will stop it. Only a contractor on the council's approved list can build it.
Ten conversions and the Northampton houses they suit
Integral. With the garage under the main roof of the house, the shell is already in place. The Planning Portal warns that rights to convert are sometimes taken away on new housing developments, so check the decision notice before anything is drawn.
Single. Most jobs here are one bay, one room. The door opening gets a new wall, and building control will want to see what it stands on once the ground is dug out.
Read our full guide: Single Garage Conversion: What Is Involved and What to Budget For →
Home office. A ground floor study keeps work away from the bedrooms and the stairs. Treat it as a habitable room from day one, with insulation and ventilation to suit.
Utility or playroom. Front half playroom, back strip utility is a layout that works in plenty of three-bed semis. A playroom is living space and will need building regulations approval. Ask building control about a plain utility.
Bedroom. If you can only reach the room through another one, you'll need an escape window. Near the Dallington Brook or the Nene, look at the flood map before a bed goes in at garage floor level.
Double. Converting one bay and keeping the other for the car is the version that causes the fewest arguments over parking.
Detached. An office or gym used by your own household stays part of the home. Turn it into a separate house and, as the Planning Portal puts it, permission may be needed whatever the work and whoever lives there.
Gym or studio. If the garage shares a wall with next door's, line it and float the floor, or every dropped weight will be heard through the brickwork.
Planning and approval. Inside work that doesn't enlarge the house usually needs no planning application, unless a condition or a conservation area says otherwise. Building regulations approval is a separate question, and a new room nearly always needs it.
Cost. No prices on this page. A footing under the old door and a new crossing are what move a Northampton quote, so get three builders to price the same drawings.
Stone walls and front windows in the old villages
Bricking up the door changes the face of the house, which is what a conservation area protects. Duston's 2009 appraisal names modern plastic windows as one of the changes that harm its historic core. A new window in place of the door should follow the pattern of the house, in a material the officers will accept.
The bigger trap in Duston and Kingsthorpe is the wall in front. Stone walls line Vicarage Lane, The Green, Kingswell Road and Mill Lane in Kingsthorpe, and Duston's appraisal calls the walls in its core a positive part of the village. Its management plan says the council is unlikely to back the loss of important boundary walls, and taking down one over a metre high beside the road needs consent.
In the Victorian suburbs, Abington Park, Barrack Road, Billing Road, Derngate, Kingsley and St Giles each have a heritage Article 4 direction. Ask the council for the notice and find out what it covers before changing the front of the house.
Under the floor, and getting it signed off
Radon is worth five minutes. The British Geological Survey's updated map, published in 2022, is the one building regulations use to decide where new buildings need radon protection, and LABC says conversions in affected areas may need it too. Look up your address on the UKradon map and ask building control about the slab.
Building control is West Northamptonshire Council's own service. Its online form takes full plans, a building notice or a regularisation application. Inspectors will look at how the new floor's membrane meets the old damp course, and at the insulation all round. Keep the completion certificate with the deeds.
Where these facts come from
- TCPA: Northampton new town
- Northamptonshire HER: Eastfield Estate
- West Northamptonshire Council: Northampton SPDs, incl. Northampton Parking Standards SPD (2019)
- West Northamptonshire Council: apply for a dropped kerb
- Planning Portal: garage conversion planning permission
- Duston Conservation Area Appraisal and Management Plan, 2009
- Northamptonshire HER: Kingsthorpe conservation area
- West Northamptonshire Council: Article 4 directions
- British Geological Survey: updated radon map for Great Britain
- LABC: do I need to consider radon?
- LABC: garage conversion tips from building control
- West Northamptonshire Council: building regulation applications
- Environment Agency: Dallington Brook and Brampton Branch flood warning area
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Questions people in Northampton ask
We live on one of the Northampton East estates. Will the council mind if we lose the garage?
For internal work with no condition attached, the council normally isn't asked. Where the original permission keeps the garage for a car, you need to apply, and officers will weigh up where the cars go against the parking standards.
The house we're buying in Northampton already has a garage conversion. What should we ask for?
The building control completion certificate. If there isn't one, the seller can ask West Northamptonshire Council's building control about a regularisation application, which looks at work already done.
Can we take down part of the stone wall in front of our Duston cottage for a drive?
Speak to the council first. Duston is a conservation area, demolishing a wall over a metre high next to the road needs consent, and the appraisal says the council is unlikely to back losing important walls.