House Extensions in Leigh-on-Sea

Most Leigh households who call us about an extension are trying to solve the same problem. The front of the house is lovely, the location is the reason they bought it, and the back of the house was never designed for how a family lives now. A narrow galley kitchen, a dark middle room and a side passage that does nothing useful are typical, and an extension is usually the cleanest way to put that right without leaving the streets they chose.

Terraces, the Marine Estate and the Chalkwell side

The Edwardian terraces around Leigh Road and the Broadway usually have a rear outrigger with a strip of side return beside it. Infilling that strip is the single biggest gain in these houses: the kitchen becomes the full width of the plot, and a run of roof glazing along the old boundary line brings daylight into the middle of the ground floor. Where the garden allows, a wraparound that fills the side return and steps out at the back gives a proper kitchen, dining and living room in one. On the Marine Estate and towards Chalkwell the plots are wider, so a full width rear extension or a two storey side extension becomes realistic, often adding a fourth bedroom without touching the loft.

Planning, conservation and the slopes

Leigh falls under Southend-on-Sea City Council for planning and building control. Many rear and side return extensions fall within permitted development, but parts of the town are covered by conservation areas, including Old Leigh, and the rules there are stricter about materials, roof forms and anything visible from the street. Terraces and semis almost always bring a party wall notice, and we raise that early so the neighbours are informed before the programme is fixed. Leigh is built on rising ground running down to the estuary, so many gardens are stepped. That affects foundation design, the floor level of the new room, and how rainwater and drainage are taken away, and it is one of the first things we look at on a site visit.

What drives the cost

The south Essex clay and nearby trees decide how deep the foundations go, and that can move the price more than the footprint does. Opening up the back of a terrace usually needs steel beams and padstones, and the number and length of those depend on how much of the existing wall comes out. Roof glazing, sliding or bifold doors, underfloor heating and the level of finish all add up, as does relocating a kitchen or the soil stack. Matching Edwardian brick and slate is worth doing properly, and we source materials to suit the house rather than the nearest builders merchant.

One accountable team on site

The same in house team handles the building, plumbing, electrics and finishing, so there is one point of contact and no gaps between trades. We are fully insured and our workmanship is guaranteed. Read more about our house extensions across Essex, see the other building work we take on in Leigh-on-Sea, or look at a loft conversion if the space you need is upstairs. For a free, no obligation quote, get in touch or call 07967 232435.