Workington house extensions
From a small utility to a two-storey addition, we take on house extensions throughout Workington, starting with a free visit and a planning check.
- Postcode districtsCA14
- Price regionNorth West England (×0.95)
- Planning rulesEngland
- Site visitFree, no obligation

Planning rules in Workington
In England a single-storey rear extension can usually go up to 3 m beyond the original rear wall of a semi-detached or terraced house, or 4 m on a detached house, without a planning application, provided it is no more than 4 m high, keeps eaves to 3 m within 2 m of a boundary and, with other buildings, covers no more than half the land around the original house. The larger home extension prior approval scheme raises those depths to 6 m and 8 m, with neighbours notified and a 42-day decision.
In England a single-storey side return infill is often permitted development if it stays within the height limits and is no wider than half the width of the original house. Conservation areas, listed buildings and flats always need an application, and the boundary wall usually brings in the Party Wall Act.
In a conservation area, national park, National Landscape, the Broads or a World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.
If the work involves a shared wall, building on the boundary, or digging foundations within 3 m (sometimes 6 m) of a neighbour's building, the Party Wall etc. Act 1996 applies and notice must be served before work starts: two months for work to a party wall, one month for new walls on the boundary and for excavations.
Applications are decided by the local planning authority (your district, borough or unitary council).
Which extension suits a Workington home?
The North West has a high share of Victorian and Edwardian terraces with rear yards and outriggers, plus large areas of inter-war semis in the suburbs.
For many houses here, double-storey extensions, single-storey rear extensions or side return extensions gives the most useful space for the budget.
What extensions cost in Workington
We publish guide prices so you can budget before anyone visits. For Workington they are adjusted by ×0.95, the factor we use across North West England.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Wraparound extensions | 25 m² | £54,500 – £69,000 |
| Side return extensions | 11 m² | £25,000 – £31,500 |
| Single-storey rear extensions | 20 m² | £38,500 – £49,500 |
| Double-storey extensions | 32 m² | £54,500 – £71,500 |
| Orangery extensions | 16 m² | £42,500 – £53,500 |
| Conservatory replacement extensions | 14 m² | £28,500 – £37,000 |
| Kitchen extensions | 20 m² | £39,500 – £50,500 |
Workington and surrounding towns
Site visits are available across Workington (CA14). Nearby, we also take on projects in Whitehaven (7 miles), Carlisle (30 miles), Penrith (30 miles), Ulverston (36 miles), Kendal (39 miles). Morecambe, in Lancashire, is roughly 48 miles from Workington and also on our list.
All extension types we build in Workington
- Single-storey rear extensions · from £19,500
- Kitchen extensions · from £25,500
- Wraparound extensions · from £34,000
- Planning permission for extensions · from £300
- Building regulations for extensions · from £850
- Pitched roof extensions · from £21,000
- Glass box extensions · from £28,500
- Extensions over a garage · from £22,500
- Bedroom extensions · from £24,500
- Double-storey extensions · from £36,000
- Timber frame extensions · from £19,500
- Utility and boot room extensions · from £13,000
- Bungalow extensions · from £24,500
- Porch extensions · from £3,800
- Conservatory replacement extensions · from £19,000
- Home office extensions · from £15,000
- Flat roof extensions · from £19,500
- Extension plans and drawings · from £1,100
- Side return extensions · from £17,000
- Side extensions · from £20,500
- Orangery extensions · from £28,500
- Annexe extensions · from £52,000
Free site visit
First, a site visit: we look at the house, garden, access and drains and listen to what you need.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
Fixed written price
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
Build and sign-off
Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.
Questions about extensions in Workington
How much does an extension cost in Workington?
Using our North West England factor (×0.95), a standard-spec single-storey extension of 20 m² is a guide £38,500 to £49,500 including VAT, and a 32 m² two-storey extension £54,500 to £71,500. Your written price follows the survey.
Do you cover all of Workington?
Yes, including the surrounding parts of Cumbria. Site visits are free and there is no obligation.
How long does an extension take in Workington?
Usually 2 to 4 months of design and approvals, then 10 to 16 weeks on site for a single-storey extension or 16 to 24 weeks for two storeys.
Who do I contract with?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
Book a free site visit in Workington
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.