Kensington, Merseyside
Rear extension planning drawings in Kensington
We plan and build rear extensions for homeowners in Kensington. Measured survey, design options, planning drawings and the application, handled for you. Start with a free site visit, then a written price once the design is agreed.
Kensington sits in Merseyside, with postcode districts including L1, L6 and L7. Rear extension applications in Merseyside are householder applications, which councils aim to decide within about eight weeks.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
What do rear extension planning drawings cost in Kensington?
As a guide, £1,000–£2,500 including VAT for a single-storey rear extension, or £2,000–£3,500 for a two-storey scheme. A householder planning application in England costs £548 (£575 for applications made from 8 December 2026), and a lawful development certificate for proposed work costs half the householder fee. We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission for a rear extension in Kensington?
Planning for a rear extension in Kensington follows the English householder rules.
A two-storey rear extension can be permitted development in England only if it projects no more than 3 metres, stays at least 7 metres from the rear boundary, matches the existing roof pitch and has obscure-glazed upper side windows. In practice most double-storey rear extensions go through a householder planning application.
Councils aim to decide householder applications within 8 weeks of validation, and prior approval within 42 days.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. At the first visit we measure what is there now and tell you which route fits: permitted development, prior approval or a planning application.
What are homes in Kensington like to extend?
Kensington has long runs of terraced houses with back yards and alleys, plus 1930s semis further out. Yard extensions on terraces are often single-storey and close to both boundaries.
How a rear extension in Kensington comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Rear extension planning drawings near Kensington
Close by, we work in Liverpool, about 1.0 miles away, and Wavertree, about 1.7 miles away.
- Rear extension planning drawings in Liverpool
- Rear extension planning drawings in Wavertree
- Rear extension planning drawings in Old Swan
- Rear extension planning drawings in Kirkdale
- Rear extension planning drawings in Dingle
Other work in Kensington:
FAQ
Rear extension planning drawings questions in Kensington
Do I need a party wall agreement?
In England, usually yes if the extension is on or near a shared boundary or the foundations are close to a neighbour's building. We serve the notices.
Can you match the brick or stone on my Kensington house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Can planning conditions affect the build?
Yes, for example matching materials or obscure glazing. We plan for them.
Do you handle building control in Kensington?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Is the site visit in Kensington free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
What do rear extension planning drawings cost in Kensington?
As a guide, £1,000–£2,500 including VAT for a single-storey rear extension and £2,000–£3,500 for a two-storey scheme, covering the measured survey, design options and the application. The council fee is extra.