Open-plan structural alteration by Nevill Construction Ltd

Structural alterations across Hertfordshire & Essex

Knock-throughs, steel beams and open-plan layouts — properly engineered, certified with building control, and finished as one job.

Open-plan kitchen-diner created by removing a structural wall
Knock-throughs & open-plan layouts

Reconfigure your home without moving

Some of the biggest transformations don't add a single square metre — they come from removing the right wall. We carry out structural alterations from single knock-throughs to full open-plan reconfigurations: load calculations by a structural engineer, steel beams supplied and installed, and the opening made good so you'd never know a wall was there.

We work closely with architects, structural engineers and building control from day one, so every alteration is properly engineered, certified and signed off.

  • Load-bearing wall removal & knock-throughs
  • Steel beams (RSJs) supplied & installed
  • Open-plan kitchen-diner & living layouts
  • Structural engineer calculations arranged
  • Building control liaison & certification
  • Plastering & making good to a decoration-ready finish
What you could do

Alterations that open a house up

Structural work sounds daunting — with the right engineering and team, it's routine. Here's what's possible.

Kitchen-diner knock-through

The most requested alteration — two cramped rooms into one sociable space.

Load-bearing wall removal

Engineered, propped and steeled correctly, with calcs and sign-off included.

Steel beam installation

RSJs supplied, installed and boxed in neatly.

Garage knock-through

Connect the garage to the house as part of a conversion.

Chimney breast removal

Reclaim floor space room by room, with the stack supported properly above.

Widened openings

Bigger doorways, pocket doors and glazed screens between rooms.

SpaceSame footprint, better house

No extension needed — alterations redistribute the space you already have.

SafetyEngineered, not guessed

Every structural change is calculated by an engineer and signed off by building control.

SpeedThe fastest transformation

A knock-through is typically one of the quickest big-impact projects on our books.

★★★★★
“Dan at Nevill started our extension in March, and within just six to eight weeks they completely transformed our home. The quality of work has been absolutely unbelievable.”
Cat CollinsVerified review · March 2025
Often part of a bigger picture

Alterations pair naturally with extensions & kitchens

Most knock-throughs happen because a family wants one big, sociable space. If that's the plan, we can handle the alteration, the extension and the kitchen fit-out as a single managed project.

Free, no-obligation quotes

Ready to talk about your project?

07540 366453