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Scottish BordersStructural alterations and knock-throughs

Structural alterations and knock-throughs in Selkirk

Looking for a builder for a structural alteration in Selkirk? We design and build structural alterations across the Scottish Borders, covering postcodes such as TD7.

Guide price in Selkirk

£4,250–£9,250 for a typical knock-through with steel beam

In Selkirk, a structural alteration typically costs £4,250–£9,250 for a typical knock-through with steel beam, including VAT at 20% (standard rate).

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Fixed price for the agreed specification
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Building control sign-off arranged
England, Wales, Scotland and Northern Ireland

What is a structural alteration?

Steel beam installed across a wide opening with props in place during a knock-through

A structural alteration changes how a house carries its loads, most often by removing a load-bearing wall and replacing it with a steel beam. It is how kitchens and dining rooms become open-plan, and how extensions are joined to the original house.

How much does a structural alteration cost in Selkirk?

In Selkirk, a structural alteration typically costs £4,250–£9,250 for a typical knock-through with steel beam, including VAT at 20% (standard rate). Building costs in Scotland are close to the UK average, so the figures for Selkirk are close to our national guide. Design, structural calculations and council fees are extra.

Guide prices for Selkirk, including VAT at 20% (standard rate)
Size or typeGuide range
A typical knock-through with steel beam£4,250–£9,250
Higher specification£9,250–£11,500

The main things that change the cost:

  • Span of the opening
  • What sits above the wall
  • Floor and ceiling repairs
  • Flush or downstand beam

Use the guide price tool to see how size and specification change the figure, then ask for a written, itemised quote.

Do you need planning permission for a structural alteration in Selkirk?

Approvals for a structural alteration in Selkirk follow the rules for Scotland. In Scotland removing a load-bearing wall needs a building warrant before work starts.

Scotland has no Party Wall Act. Work on shared walls is governed by your title deeds, the Tenements (Scotland) Act 2004 for flats, and common law, so we agree arrangements with neighbours in writing before work starts.

Our first visit includes a check of your planning history, so you know the route before paying for drawings.

What we handle

What we take care of:

  • Making good, plastering and flooring repairs
  • Building control application
  • Written agreement with neighbours on shared walls
  • Building control sign-off
  • Temporary propping
  • Fire protection to the steel

How long does it take?

Expect 1 to 2 weeks on site for a typical knock-through. Allow time beforehand for drawings and approvals, usually 6 to 12 weeks.

Building in Selkirk

Scotland’s housing ranges from sandstone tenements and villas to post-war and modern estates, and the building warrant system shapes how projects are planned.

From TD7 outwards, we take on projects throughout Selkirk and the surrounding parts of the Scottish Borders.

How it works

  1. 01

    Survey and brief

    We visit, discuss your ideas and budget, and survey the property or site at no cost.

  2. 02

    Drawings and written quote

    We prepare the design and give you a written, itemised quote with inclusions and exclusions.

  3. 03

    Approvals in place

    We handle planning, building control and neighbour notices before work starts.

  4. 04

    Build and handover

    Work follows the agreed programme, with inspections along the way and a completion certificate at the end.

Questions about structural alterations in Selkirk

Who approves a structural alteration in Selkirk?

Planning matters in Selkirk go to the council covering your address, and the work needs a building warrant. We prepare and submit the applications for you.

What fire protection does a steel need?

Usually fire-rated plasterboard or intumescent paint, as building control requires.

How do I know if a wall is load-bearing?

Only a survey can confirm it. Walls that carry floor joists, roof loads or walls above are load-bearing. We check on site and the engineer confirms.

Do I need planning permission for a structural alteration in Selkirk?

In Scotland removing a load-bearing wall needs a building warrant before work starts.

How much does a structural alteration cost in Selkirk?

In Selkirk, a structural alteration typically costs £4,250–£9,250 for a typical knock-through with steel beam, including VAT at 20% (standard rate). Your fixed price depends on the survey and drawings.

How long does a knock-through take?

Usually 1 to 2 weeks on site, plus a few days for plastering to dry.

Start with a guide price, then book a free survey for a fixed quote in Selkirk.

Call 0800 088 6248 or get an instant guide price online.

Call 0800 088 6248Get a guide price