St Ives, Cambridgeshire
Rear extension planning drawings in St Ives
Measured survey, design options, planning drawings and the application, handled for you. If you live in St Ives and want to know what a rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
St Ives sits in Cambridgeshire, with postcode districts including PE27. Planning applications in St Ives go to the local planning authority covering St Ives, and we check its local design guidance for rear extensions before drawing.
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 St Ives?
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 St Ives?
Whether your rear extension in St Ives needs a planning application depends on its size, your house and any local restrictions.
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 St Ives like to extend?
Post-war semis and newer estates are typical of St Ives, and many have room for a full-width extension. Shrinkable clay is common in the East of England, so foundations near trees and hedges are designed to NHBC-style depth guidance.
How a rear extension in St Ives comes together
Free site visit
We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Rear extension planning drawings near St Ives
Neighbouring places we cover include Huntingdon (4.6 miles) and Chatteris (10.1 miles).
- Rear extension planning drawings in Huntingdon
- Rear extension planning drawings in Chatteris
- Rear extension planning drawings in St Neots
- Rear extension planning drawings in Cambridge
- Rear extension planning drawings in Ely
Other work in St Ives:
FAQ
Rear extension planning drawings questions in St Ives
What do rear extension planning drawings cost in St Ives?
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.
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.
Do I need an architect?
You need accurate drawings by someone who knows householder planning; we provide them.
Do you handle building control in St Ives?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Is the site visit in St Ives free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Do I need planning permission for a rear extension in St Ives?
Often not for a single-storey rear extension of up to 3 metres (4 metres on a detached house) under permitted development, or up to 6 or 8 metres with prior approval, unless the house is in a conservation area or its rights have been removed.