Building services in Runcorn
House extensions
- Single-storey extensions
- Double-storey extensions
- Side extensions
- Side return extensions
- Wraparound extensions
- Kitchen extensions
- Orangeries
- Glazed and contemporary extensions
- Porches
Loft conversions
- Dormer loft conversions
- Hip-to-gable loft conversions
- Mansard loft conversions
- Rooflight loft conversions
- Bungalow loft conversions
Garage, basement and barn conversions
New build homes
Renovations and structural work
Design and approvals
Guide prices in Runcorn
| Project | Guide range (inc VAT) |
|---|---|
| Kitchen extensions | £2,100–£3,200 per m² including a mid-range kitchen |
| Hip-to-gable loft conversions | £51,500–£73,500 for a hip-to-gable with rear dormer |
| Garage conversions | £17,000–£28,000 for a single integral garage |
| House renovations | £850–£1,700 per m² for a medium to full renovation |
| Porches | £6,000–£15,000 from a 3 m² porch to a small front extension |
| Orangeries | £2,250–£3,200 per m² of floor area |
The guide for Runcorn reflects typical costs in the North West, roughly 6% below the UK-wide figure.
Planning permission in Runcorn
In England a single-storey rear extension is often permitted development: broadly up to 3 metres deep on a semi-detached or terraced house and 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres within 2 metres of a boundary, and covering no more than half the garden. The larger home extension scheme allows up to 6 or 8 metres if you notify the council first and neighbours have a chance to comment. In conservation areas, National Parks and National Landscapes the larger home extension route, side extensions and cladding are not permitted development. Flats and houses whose rights have been removed need a planning application, and listed buildings need listed building consent.
Building regulations approval comes from the council’s building control service or a registered building control approver. The work is inspected at key stages, such as foundations, drainage and insulation, and a completion certificate is issued at the end.
About building in Runcorn
The North West has many brick terraces and inter-war semis, where kitchen extensions and dormer loft conversions add space without moving.
If your home is in Runcorn or close by in Widnes, Halewood and Speke, a free home visit is the first step. Runcorn has a population of around 61,000.
How it works
- 01
Survey and brief
We visit, discuss your ideas and budget, and survey the property or site at no cost.
- 02
Design and fixed quote
Drawings, structural calculations and an itemised, fixed price for the agreed specification.
- 03
Approvals in place
We handle planning, building control and neighbour notices before work starts.
- 04
Build and sign-off
We run the build to a written programme and hand over the completion certificate.
Questions from homeowners in Runcorn
Do I need planning permission for an extension in Runcorn?
In England a single-storey rear extension is often permitted development: broadly up to 3 metres deep on a semi-detached or terraced house and 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres within 2 metres of a boundary, and covering no more than half the garden. The larger home extension scheme allows up to 6 or 8 metres if you notify the council first and neighbours have a chance to comment. In conservation areas, National Parks and National Landscapes the larger home extension route, side extensions and cladding are not permitted development. Flats and houses whose rights have been removed need a planning application, and listed buildings need listed building consent.
How much does a loft conversion cost in Runcorn?
A rear dormer loft conversion in Runcorn typically costs £45,000–£64,000 for a typical rear dormer with en-suite, including VAT.
Is the home visit free?
Yes. The first visit to discuss your project and measure up for a quote is free, with no obligation.
How much does an extension cost in Runcorn?
A single-storey extension in Runcorn typically costs £1,850–£2,750 per m² of floor area, and a double-storey extension £1,550–£2,350 per m² of floor area (both floors), including VAT.
Do you work in Runcorn?
Yes. We take on extensions, loft conversions, conversions, renovations and new builds across Runcorn, including postcodes WA7.