Completed open-plan kitchen extension by Nevill Construction Ltd

House extensions across Hertfordshire & Essex

Single and double-storey extensions across Bishop's Stortford, Hertfordshire and Essex — designed around how you live and managed from footings to final finish.

Finished kitchen extension with island and herringbone flooring
Single & double storey

More space, without moving house

A well-built extension is usually the most cost-effective way to get the home you actually want — an open-plan kitchen-diner, an extra bedroom, or space for a growing family. We manage the whole build: groundworks, structural steels, roofing, bifold and sliding doors, roof lanterns, plastering and second-fix carpentry, right through to decoration-ready finish.

Because our background is carpentry, the finishing details — flooring, skirting, doors and cabinetry — are built to the same standard as the structure itself.

  • Rear, side-return and wrap-around extensions
  • Structural openings, steels & bifold installations
  • Roof lanterns & skylights for natural light
  • Open-plan kitchen-diners fitted in-house
  • Guidance on planning & building control throughout
What you could do

Types of extension we build

Every home and plot is different — these are the most popular routes, and we'll tell you honestly which suits yours.

Rear extensions

Open the back of the house into the garden — the classic route to an open-plan kitchen-diner.

Side-return extensions

Use the dead strip beside the house; transforms narrow kitchens in terraces and semis.

Wraparound extensions

Combine rear and side for the biggest footprint, with light from two directions.

Double-storey extensions

Extra bedroom above, bigger kitchen below — two floors for far less than double the cost.

Over-garage extensions

Build over an existing garage; we check and reinforce the structure before adding weight.

Garden rooms & sunrooms

Highly glazed spaces that chase the light, with roof lanterns and bifolds to match.

SpaceA whole new room — or two

Kitchen-diners, utility rooms, extra bedrooms: an extension reshapes how the whole house works.

ValueSpace that pays you back

Well-built extensions are consistently among the best value-adding improvements you can make to a home.

Living through itStay put during the build

We seal off the work area and keep the rest of the house running — most families live at home throughout.

★★★★★
“Dan and his team completed a 3-metre extension on our home. They were reliable, polite and professional, and showed great respect for our home. Dan made frequent visits and answered every question — we wouldn't hesitate to recommend them.”
Lauren Ellis-BadhamVerified review · January 2025
On site

Extensions in progress and complete

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Ready to talk about your project?

07540 366453