Crownhill Building Services has completed three extension projects in Loughton — more than in most individual grid squares across Milton Keynes. That track record means we know this area well. The ground conditions. The typical plot sizes. The planning position. And the brickwork specification that matches the original Development Corporation build standard. This guide covers what Loughton homeowners need to know before starting.
What Kind of Homes Are in Loughton?
Loughton MK5 sits between Great Holm and Shenley Brook End in the south-west of Milton Keynes. The area includes terraced houses semi-detached homes and larger detached properties — each presenting its own opportunities for extending.
The terraced and semi-detached homes that make up much of Loughton tend to have reasonable rear garden depth and consistent plot widths. Most extend to 3 metres at the rear under Permitted Development without any planning application. The larger detached homes — particularly those on the wider plots towards the edges of the grid square — have more scope for ambitious double storey schemes that add significant floor area on both levels.
The clay-heavy subsoil that runs beneath this part of MK is something we factor in from the outset. Foundation type is confirmed before any price is put on paper — so there are no surprises once work starts on site.
Planning Permission in Loughton
Most single storey rear and side extensions in Loughton fall within Permitted Development. Detached houses can extend up to 4 metres to the rear without a planning application. Terraced and semi-detached properties are permitted up to 3 metres. Corner plots and properties that have already been extended may have reduced permitted development rights — we confirm this at the initial site visit.
Double storey extensions almost always require a full planning application to Milton Keynes City Council. We manage that entire process — architectural drawings submission and liaison with the council — as part of the project. Read our full guide on planning permission for home extensions in Milton Keynes.
Completed Projects in Loughton
We have delivered three extension projects in Loughton that demonstrate the range of work we complete in this area — a single storey rear extension a large two storey extension combining rear and side additions and a two storey side extension on a semi-detached property. Each project was delivered on a fixed price agreed before work started. Each has a customer video testimonial.
What Loughton Homeowners Typically Build
The most common brief we receive in Loughton is a single storey rear extension that opens up the ground floor — typically removing the wall between a narrow rear kitchen and the living space to create a connected open-plan kitchen and dining area. It is the project that changes how a house functions day to day more than any other.
The second most common request is a double storey rear or side extension. Loughton's larger detached homes suit this well — adding a bedroom and bathroom at first floor level alongside extended ground floor living space. Both floors go up in a single build programme which is more cost-effective than two separate phases over years.
How Long Does an Extension Take in Loughton?
A single storey extension within Permitted Development typically completes in ten to fourteen weeks from first call to completion certificate — four to six weeks of pre-construction followed by six to eight weeks on site. Double storey projects add eight to twelve weeks for the planning process before construction begins. Read our full guide on how long a home extension takes in Milton Keynes.
Next Step
We offer a free no-obligation site visit to every Loughton homeowner considering an extension. We look at the property assess the ground confirm your planning position and give you an honest picture of what is possible before you commit to anything.
Get in touch today to arrange your free consultation. Browse our full portfolio of completed extensions across Milton Keynes to see the standard of finish we deliver.