Home About Services Areas Projects Blog Contact 07472 424 226

House Extensions Parsons Green

Single and double storey extensions in Parsons Green. Trusted, professional, 30+ years' hands-on experience.

GS Renovation designs and builds extensions across Parsons Green, working with the bay-fronted Victorian and Edwardian terraces near the green that have rear closet wings and side returns waiting to be used. With over 30 years in SW6 and across Hammersmith and Fulham, we take your extension from foundations to full fit-out as one project.

Steel and new floor joists set out on a rear extension built by GS Renovation at a UK home
The steel seated and the joists hung off it, with the cavity wall closed and scaffold still in place.

Side-return and rear extensions in Parsons Green

The most popular extension on a Parsons Green terrace fills in the side return, that narrow strip alongside the rear closet wing, and often adds a single-storey rear extension to create a wide kitchen-diner opening onto the garden. We handle the groundworks and foundations, allowing for the shallow Victorian footings and any nearby trees on these SW6 plots, then form the new opening with a steel beam sized by the engineer.

Double-storey and wrap-around extensions are also common where owners want an extra bedroom or en-suite above. We manage the roof works, whether a flat roof with rooflights or a pitched tie-in to the existing slope, and match the London stock brick and detailing so the addition sits comfortably against the original terrace and its neighbours.

Planning and party walls near the green

Whether your extension is permitted development or needs a full planning application depends on the property. Many single-storey rear extensions on Parsons Green terraces fall under permitted development, but properties in a conservation area, or those already extended, often need permission from Hammersmith and Fulham Council. We assess your specific SW6 home and advise on the right route before any work begins.

Extensions always need building regulations approval for the structure, foundations, insulation and drainage, which is separate from planning. Because you are building right up to the boundary and often against a shared wall to the neighbours either side are usually required. We coordinate the council submission, building control inspections and party wall matters so the whole process runs in order.

  • Bi-fold, sliding and French door openings to the garden
  • Trial holes to set foundation depth near drains and trees
  • Planning applications and permitted development assessments
  • Party Wall Act notices for excavation near a neighbour's wall
  • Insulation, airtightness and thermal detailing to regulations
Service areaParsons Green · SW6
Local authorityHammersmith and Fulham Council
Part ofWest London (Inner London)
Typical homesHandsome Victorian terraces near the green
Also covered nearbyHammersmith, Fulham, Shepherd's Bush and Hammersmith and Fulham

Trusted House Extensions in Parsons Green

Homeowners in Parsons Green choose GS Renovation because one team runs the whole extension, from foundations, steel and roof to the finished work and final decoration. We know how the terraces near the green behave, advise honestly on permitted development versus planning, and deliver a build that adds real space and value in SW6, backed by 30+ years locally.

  • Waste cleared as we go, not left piled in the garden
  • Free follow-up visit after completion if anything needs attention
  • Permitted development checked before you pay for a planning application
  • Registered in England, Companies House no. 14611254
  • Party Wall notices served for excavation near a neighbour's wall
  • Building control inspected at foundation, damp course and steel stages
30+ YearsFounder's experience
Fully Insured5 year guarantee
4.9 / 531 MyBuilder reviews
Building ControlCompliant
Free QuotesNo obligation
Reviews

Rated 4.9 / 5 by our clients

★★★★★ 4.9 average from 31 verified reviews on MyBuilder

★★★★★
Giorgio is an excellent and intelligent workman, and with very reasonable prices! He installed a kitchen extractor fan in a complicated situation…
Adil KhanWoolwich, London · via MyBuilder
★★★★★
George did a great job on our new bathroom. He is a really friendly and helpful guy and always ready to discuss any issues or concerns and come up…
mre_36Waltham Cross · via MyBuilder
★★★★★
Saaid is the best craftsman I have worked with. He knows what he is doing from the very beginning. He has a great knowledge of construction…
volkan50816Stoke Newington, London · via MyBuilder
Read all 31 reviews

FAQ

Frequently Asked Questions about House Extensions Parsons Green

Why do house extensions quotes in Parsons Green vary so much?

Variation almost always comes from what has been left out. GS Renovation prices house extensions after a survey at the SW6 property, covering structure, trades, approvals and reinstatement, so the total looks higher than a quote covering half of it. A Parsons Green homeowner comparing like with like usually finds the gap narrows. That is worth doing before anyone starts work in Hammersmith and Fulham. Ring 07472 424 226 and GS Renovation will go through the SW6 quotation with you line by line. As a rough guide, house extensions in London typically starts from roughly £40,000 for a single-storey rear extension and rises with size and specification (indicative London ranges, MyBuilder and Checkatrade, 2026). Your figure depends on the size, specification and condition of the property, which is why we survey before quoting.

What does a side return infill add to a Parsons Green house?

Width where the plan is at its most awkward. The terraces around Parsons Green typically have a narrow rear wing with a passage beside it, and infilling that strip turns a corridor kitchen into a room the full width of the plot. The rear and side walls of the wing are opened, the loads carried on steel designed for the new spans, and rooflights bring light into what becomes a deep floor plate.

How are garden levels handled on a Parsons Green extension?

By setting the finished floor level before the foundations are poured. Gardens behind Parsons Green terraces are often higher or lower than the internal floor, and the relationship between the two governs the threshold detail, the damp proof course and where surface water goes. Getting it wrong produces a step nobody wanted or a threshold that lets water in. Levels are surveyed at the outset and drainage falls designed to suit.

Does building an extension in Parsons Green need access to the neighbour's land?

Frequently, to build or finish a wall on the boundary. Where a Parsons Green extension sits against a shared boundary, scaffolding or finishing the outer face may require entry next door. Access of that kind is arranged through the party wall process rather than assumed, and the timing is agreed with the neighbour in advance. Work is planned so any period of access is short and the ground is reinstated.

What supports a large rooflight over a Parsons Green side return?

Steel designed for the opening and the glass it carries. A long rooflight over a Parsons Green infill removes most of the roof structure over that span, so the remaining loads are taken on beams sized by the engineer, with the deflection limited so the glazing is not stressed. The upstand, the weathering detail and the thermal break matter as much as the steel, because that is where a rooflight leaks.

How is a Parsons Green house kept secure while the back is open?

Boarded and locked at the end of each working day rather than sheeted alone. Where the rear wall of your Parsons Green property is removed to join an extension, the opening is closed with a temporary door or boarding, and the alarm arrangement is discussed with the owner. The exposed period is kept short by preparing everything before the wall is taken out.

Every Service, One Team

More GS Renovation Services in Parsons Green

The same trusted team, 30+ years' hands-on experience and free, no-obligation quotes apply to every GS Renovation service in Parsons Green. Explore what else we do locally:

Same Service, Nearby Areas

House Extensions Near Parsons Green

We carry out house extensions across Parsons Green and the surrounding areas. Explore a nearby location:

Ready to Start Your Parsons Green Project?

Free, no-obligation quote for house extensions in Parsons Green. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.

We use these details only to respond to your enquiry. See our privacy policy.

We use these details only to respond to your enquiry. See our privacy policy.

Free, no-obligation quote. We reply within 24 hours. Or call 07472 424 226.