Garage in Somerset: Planning Permission Guide
A guide to building a garage in Somerset under permitted development — rules, costs, and professional advice.
Check if your garage qualifiesGarages in Somerset at a glance
approved
application fee
weeks typical
Based on 46 decided applications in Somerset over 12 months (41 granted, 5 refused).
Somerset borders or partially overlaps Exmoor National Park and the Blackdown Hills, Cotswolds, Cranborne Chase, Mendip Hills, and Quantock Hills AONBs — properties near those boundaries are on Article 1(5) land where permitted-development rights are restricted. Somerset has 178 conservation areas — extensive heritage coverage restricting external alterations across many streets. Over 5,000 listed buildings recorded across the borough.
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Approval probability, 5 nearest comparables, refusal reasons — for your specific address.
Recent garage decisions in Somerset
The 5 most recent decided applications. Addresses redacted to postcode area.
Conversion and change of use of existing detached garage, garden store & annex building to a 3 x bedroom domestic dwelling.
Alterations to front elevation & conversion of existing garage to study
Convert Garage to habitable space, replace garage door with window & install a side window.
Erection of new carport, stone wall, fence & hedge. Relocation of access & driveway utilising existing field access & relocation of publi…
Demolition Of Existing Single Storey Parts Including Porch, Demolition Of Existing Detached Garage & Erection of Proposed Two Storey & Si…
These are borough-wide. See the 5 nearest to your address.
Get my report — £9Permitted Development Rules
Buildings etc incidental to the enjoyment of a dwellinghouse
GPDO 2015, Schedule 2, Part 1, Class E
Garages fall under Part 1, Class E of the GPDO (the same class as outbuildings). They must be incidental to the enjoyment of the house.
Key dimension limits
These are the maximum GPDO limits for a detached house with no constraints. Your actual limits depend on your property type, location, and any planning restrictions.
Enter your postcode to see the personalised limits for your garage.
Check my limitsTypical Costs in South West England
Garage costs depend on size, whether it's attached or detached, and whether it includes electrics or additional rooms above.
Cost per m²
construction rate
Typical total
Based on 15–20 m²
Typically includes
Typically excludes
Single garage. Double garages and garages with rooms above will be significantly more.
Get a personalised cost estimate based on your actual garage dimensions.
Get my estimateWhich Professionals Do You Need?
A standard single garage can often be built from supplier designs. A garage with rooms above will need architectural and structural input.
A draughtsperson or architectural technician can prepare any drawings needed. A full architect may not be necessary.
Garden buildings and garages can often use supplier designs or simple drawings from a draughtsperson.
Typical fee: £500–£2,000 (Basic drawings)
A structural engineer may be needed if the garage has a room above or connects to the house.
Typical fee: £500–£1,500
May apply if the work is within 3 metres of a shared boundary. Check with your builder.
Typical fee: £700–£1,500 (per neighbour (if applicable))
This guidance is based on a typical semi-detached house with no special constraints. Listed buildings, conservation areas, and attached properties may require additional professional input.
Find out exactly which professionals you need for your garage.
Get personalised guidanceConservation Areas & Listed Buildings
In conservation areas, garages are subject to the same Class E rules. Consider using materials sympathetic to the area character.
Properties in conservation areas often have reduced permitted development rights. Some project types (like side extensions) lose PD rights entirely. An Article 4 Direction can remove additional PD rights.
Listed buildings (Grade I, II*, or II) have no permitted development rights at all. Any external alteration requires Listed Building Consent in addition to any planning permission. An architect experienced in heritage work is essential.
Check if your property is in a conservation area or has other planning constraints.
Check my propertyFrequently Asked Questions
Just want a quick yes/no for your garage?
Run our free 2-minute check to see whether your project likely qualifies as permitted development in Somerset. For personalised approval odds and nearby comparables, get the full report above.
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