Do I need planning permission for a garden room in Fulham?

Probably not on an unlisted whole house, but Fulham is the one area where we will not assert a blanket answer. Hammersmith and Fulham has one borough-wide Article 4 Direction and it covers basements only. The council also says it has removed specific rights at individual properties, particularly in conservation areas, without publishing an enumerable list of them, so a property-specific direction cannot be ruled out from the published record. We check the address with the council rather than assume.

How big are gardens in Fulham?

The smallest of any area we work in. The Hammersmith and Fulham borough median for a house is 55.8 square metres, against a London median of 139.6. Within SW6 it runs from about 69.6 in Fulham Reach down to 43.7 around Fulham Broadway, 42.7 in Munster and 35.4 in the Aintree streets.

Is there a basement restriction in Fulham?

Yes, borough-wide. An Article 4 Direction in force since 26 April 2018 removes permitted development rights for creating or extending a basement anywhere in Hammersmith and Fulham, including for flats and maisonettes. It does not affect a garden building sitting on pads or screw piles, but it does catch any below-ground element.

How much does a garden room cost in Fulham?

Bespoke builds typically start around £35,000. On a Fulham plot that buys a compact, very well made building rather than a large one, because the median garden here is smaller than many garden rooms plus the circulation space around them.

LocationsFulham

Garden Rooms in Fulham, SW6

Bespoke garden rooms across Fulham, from Parsons Green and Hurlingham to Munster, Sands End and the New King's Road. Garden offices, studios and gyms from around £35,000.

Fulham has the smallest gardens of anywhere we work, which makes the design question sharper here than the planning one. Worth being clear about both before anyone quotes. Free quotes, no obligation.

Your address checked with the council, since the published record is incomplete

Garden measured first, because the plot decides the design here

Whole house or converted flat established at the outset

Get Quotes for Your SW6 Build

Up to 3 vetted installers covering Fulham. Free, no obligation.

The Smallest Gardens We Work With

Worth leading with, because it is the thing that most shapes a Fulham project and the thing most quotes skip. Hammersmith and Fulham has a median private outdoor space for a house of 55.8 square metres, against a London median of 139.6. That is the smallest of any borough we cover, and within SW6 parts of it are smaller again.

Area	Median garden
Fulham Reach	69.6 m²
Fulham Palace and Hurlingham Park	66.4 m²
South Park	54.5 m²
Parsons Green East and Eel Brook Common	53.0 m²
Fulham Broadway	43.7 m²
Munster	42.7 m²
Fulham Aintree	35.4 m²

ONS and Ordnance Survey, published April 2020, median private outdoor space for a house. Front and rear combined, so the rear garden alone is smaller again.

At the lower end of that range, the median house garden is smaller than many garden rooms plus the space to walk around one. That does not mean a Fulham project is impossible. It means the realistic market here is the upper tail rather than the typical house, and that on a median plot the honest brief is a small, very well built room rather than a large one squeezed in.

The height rule reinforces it. Permitted development caps the building at 2.5 metres overall wherever any part sits within 2 metres of a boundary, and on a Fulham garden that is effectively the whole plot. The 3 and 4 metre figures on national websites do not describe SW6.

Basements Need Permission Borough-Wide

Hammersmith and Fulham has one borough-wide Article 4 Direction, made in April 2017, confirmed and in force from 26 April 2018. It removes permitted development rights for creating or extending a basement anywhere in the borough except the Old Oak and Park Royal development area, and unusually it applies to flats and maisonettes as well as houses.

For a standard garden room sitting on pads or screw piles this changes nothing. It matters if the design involves any below-ground element, a sunken floor or a plant room, which is worth settling at the design stage rather than at application.

Fulham is the one area we cover where we will not give a blanket answer on outbuildings. The council states that it has removed specific permitted development rights at many individual properties, especially in conservation areas, but does not publish an enumerable list of those directions, and it publishes nothing to the national planning register.

So we can say there is no published borough-wide restriction on garden buildings. We cannot say from the published record that a property-specific one does not exist on your address. That is a real gap rather than a hedge, and the honest answer is to check with the council's conservation team before design work rather than assert an all-clear.

Hammersmith and Fulham planning

Garden Room Costs in Fulham

Budget from around £35,000 for a bespoke build. In Fulham that figure buys build quality rather than floor area, which is the right trade on a plot this size. Where the property is a flat or a conversion, and Sands End and Lillie wards are around 88 and 86 per cent flats, add a planning application and freeholder consent before anything is built. Parsons Green and Sandford is the strongest ward for whole houses at roughly half.

On Property Values

SW6 sold prices averaged £1,095,144 over the last twelve months, the highest of any district in this part of London, with terraced houses at £1,886,618 and semi-detached at £3,210,350, on Rightmove figures published 9 July 2026 covering transactions to 30 April 2026. We do not publish a percentage for what a garden room adds, because no independent body measures it and every figure in circulation comes from manufacturers marketing their own product.

Parsons Green, Putney Bridge, Fulham Broadway and Imperial Wharf are all Zone 2, on the District line and the Overground Mildmay line. Bishops Park, Hurlingham, Parsons Green and Eel Brook Common give their names to conservation areas, and the New King's Road carries a run of listed Georgian and early Victorian houses. The same installers cover Battersea and Putney across the river, and Chelsea to the east. For the briefs that come up most often on plots this size, see the garden office and garden gym specifications.

Garden Room Quotes in Fulham

Send us your address and we will measure the plot and check the position with the council, then match you with up to three vetted installers who work Hammersmith and Fulham. Free, and no obligation to proceed.

Start Your Project

Covering Fulham, Parsons Green and SW6.