Amersham on the Hill, Buckinghamshire
Rear extension planning drawings in Amersham on the Hill
Measured survey, design options, planning drawings and the application, handled for you. We design, get the approvals for and build rear extensions in Amersham on the Hill and the surrounding area, with one contract from the first survey to building control sign-off.
We cover Amersham on the Hill (HP5, HP6 and HP7) as part of our Buckinghamshire work. Rear extension applications in Buckinghamshire 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 Amersham on the Hill?
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. These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a rear extension in Amersham on the Hill?
Planning for a rear extension in Amersham on the Hill 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. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Amersham on the Hill like to extend?
Commuter semis and detached houses make up much of Amersham on the Hill, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a rear extension in Amersham on the Hill comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
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 Amersham on the Hill
From Amersham on the Hill, the nearest places we also cover are Amersham (0.7 miles) and Chesham (1.8 miles).
- Rear extension planning drawings in Amersham
- Rear extension planning drawings in Chesham
- Rear extension planning drawings in Chorleywood
- Rear extension planning drawings in Beaconsfield
- Rear extension planning drawings in Chalfont St Peter
Other work in Amersham on the Hill:
FAQ
Rear extension planning drawings questions in Amersham on the Hill
What do rear extension planning drawings cost in Amersham on the Hill?
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.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
Can planning conditions affect the build?
Yes, for example matching materials or obscure glazing. We plan for them.
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 Amersham on the Hill house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.