House extensions in Maldon
From a small utility to a two-storey addition, we take on house extensions throughout Maldon, starting with a free visit and a planning check.
- Postcode districtsCM9
- Price regionEast of England (×1.06)
- Planning rulesEngland
- Site visitFree, no obligation
Choosing the right extension in Maldon
The East of England mixes market-town terraces, inter-war semis and modern estates. Clay soils are common in parts of the region, which can affect foundation design.
Depending on the plot, single-storey rear extensions and bungalow extensions are often the strongest options, with double-storey extensions worth considering where there is room.
Do extensions in Maldon need planning permission?
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 two-storey rear extension is permitted development only if it projects no more than 3 m from the original rear wall, sits at least 7 m from the rear boundary, matches the roof pitch and uses obscure, non-opening side windows upstairs. Most two-storey extensions therefore go through a householder planning application, which costs £548 from 1 April 2026 and normally takes about 8 weeks.
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).
Popular extension prices in Maldon
We publish guide prices so you can budget before anyone visits. For Maldon they are adjusted by ×1.06, the factor we use across East of England.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Side return extensions | 11 m² | £27,500 – £35,000 |
| Orangery extensions | 16 m² | £47,000 – £59,500 |
| Kitchen extensions | 20 m² | £44,500 – £56,500 |
| Extensions over a garage | 12 m² | £26,500 – £34,500 |
| Wraparound extensions | 25 m² | £60,500 – £77,000 |
| Single-storey rear extensions | 20 m² | £43,000 – £55,500 |
Maldon and surrounding towns
Site visits are available across Maldon (CM9). Neighbouring towns we cover include Witham (5 miles), Chelmsford (9 miles), Rayleigh (10 miles), Wickford (11 miles), Braintree (11 miles). Just over the Suffolk border, Sudbury is about 21 miles away.
Choose an extension type
- Orangery extensions · from £31,500
- Annexe extensions · from £58,000
- Glass box extensions · from £31,500
- Wraparound extensions · from £38,000
- Building regulations for extensions · from £950
- Side return extensions · from £19,000
- Pitched roof extensions · from £23,500
- Utility and boot room extensions · from £14,500
- Extension plans and drawings · from £1,250
- Timber frame extensions · from £22,000
- Home office extensions · from £16,500
- Bungalow extensions · from £27,500
- Bedroom extensions · from £27,500
- Single-storey rear extensions · from £22,000
- Conservatory replacement extensions · from £21,000
- Double-storey extensions · from £40,000
- Planning permission for extensions · from £350
- Side extensions · from £23,000
- Kitchen extensions · from £28,500
- Flat roof extensions · from £22,000
- Porch extensions · from £4,200
- Extensions over a garage · from £25,000
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
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
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Questions about extensions in Maldon
How much does an extension cost in Maldon?
Using our East of England factor (×1.06), a standard-spec single-storey extension of 20 m² is a guide £43,000 to £55,500 including VAT, and a 32 m² two-storey extension £61,000 to £80,000. Your written price follows the survey.
Do you cover all of Maldon?
Yes, including the surrounding parts of Essex. Site visits are free and there is no obligation.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Maldon, and the guide-price tool gives a range for your own size and finish in about a minute.
Book a free site visit in Maldon
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.