Single-storey extensions · Penrith

Single-storey extensions in Penrith

Our single-storey extensions service covers Penrith and the rest of Cumbria. You get a fixed price in writing for the agreed specification, and one person co-ordinating the trades.

Covering Penrith

Penrith sits 17 miles south-east of Carlisle, with Carlisle 17 miles to the north-west and Kendal 23 miles to the south.

Projects in Cumbria are taken on by arrangement, and any travel and accommodation costs for the team are shown openly in the quote.

Homes in the North West

Terraced housing is a defining feature of many North West towns, which brings party walls and narrow access into most projects, with more space to extend on suburban semis.

What goes into a single-storey extension?

A single-storey extension adds one level of new floor space to the back or side of a house, usually to open up a kitchen, dining or family room. It is the most common way to gain space without moving, and many can be built without a planning application.

  • Measured survey and design drawings
  • Planning or lawful development certificate where needed
  • Building control application and inspections

How much does a single-storey extension cost in Penrith?

Indicative costs for single-storey extensions. London and the South East usually sit towards the top of each range.

Single-storey extensionsGuide price incl. VAT
Standard specification£2,600 to £3,000 per m²
Good specification£3,000 to £3,500 per m²
High specification£3,500 to £4,000 per m²

Do you need permission for a single-storey extension in Penrith?

Projects in England go through two separate checks. Planning (or confirmation that the work is permitted development) comes from the district, borough or unitary council, and building regulations approval comes from the council’s building control team or a registered building control approver. Where work touches a shared wall or digs near a neighbour’s foundations, the Party Wall etc. Act 1996 applies.

In England a single-storey rear extension can often go ahead under permitted development: up to 3 m deep on an attached house or 4 m on a detached one, no higher than 4 m, with eaves no higher than 3 m within 2 m of a boundary.

What should I think about before starting?

  • Building on or near a shared boundary usually means serving a party wall notice in England and Wales.
  • Kitchens and doors have long lead times, so we order them early.

From first call to completion

  1. Tell us about the project. Call, use the guide price tool or send the form with a few photos and a postcode.
  2. We visit and measure. A surveyor checks the house, the boundaries and the ground, and discusses what is realistic.
  3. Price and paperwork. The design is priced line by line, and we submit the planning and building control applications.
  4. Build and hand over. Our teams build to the programme, building control inspects, and you get the completion paperwork at the end.

Your questions answered

How long does a single-storey extension take to build?

The build itself usually takes 10 to 16 weeks once work starts on site. Design, approvals and ordering usually add 6 to 12 weeks before that.

Do you need to dig up the drains?

Sometimes. If a public sewer runs under the extension, the water company has to agree a build-over or a diversion. We check this at survey stage.

Who deals with the council for a project in Penrith?

We do. We prepare the drawings, submit planning or permitted development paperwork if needed, and arrange building control inspections.

Single-storey extensions near Penrith

Learn more about single-storey extensions, or see every project we cover in Penrith.

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