Open Plan Living: Knocking Through Walls UK 2025
Complete Guide to Removing Internal Walls
Open plan living remains one of the most popular home improvements, creating light filled, sociable spaces perfect for modern family life. The key question is whether your wall is load bearing, which determines cost, complexity, and whether you need structural work.
This guide covers everything from identifying wall types to understanding steel beam requirements, costs, and the approval process for creating open plan spaces.
Understanding Wall Types
The first step is identifying whether your wall is load bearing. This determines the entire project approach.
Non Load Bearing (Partition)
How to Identify:
- Runs parallel to floor joists
- Hollow sound when knocked
- Often thinner (around 100mm)
- No walls directly above on upper floors
Note: Simplest and cheapest to remove. Still check for services (pipes, wires).
Load Bearing (Structural)
How to Identify:
- Runs perpendicular to floor joists
- Solid sound when knocked
- Often thicker (around 225mm for brick)
- Walls stack up through the building
Note: Requires structural engineer calculations. Steel beam and supports essential.
Party Wall (Shared with Neighbour)
How to Identify:
- Wall between two properties
- Usually solid construction
- On boundary line
Note: Cannot remove. Work near party wall requires Party Wall Agreement.
When in Doubt, Get Expert Advice
If you are unsure whether a wall is load bearing, always consult a structural engineer before any work. Incorrect removal of a structural wall is extremely dangerous and can cause building collapse.
Cost Breakdown
Individual cost elements for wall removal projects.
| Work Element | Cost Range | Notes |
|---|---|---|
| Structural Engineer | £300 to £800 | Essential for load bearing walls. Provides calculations. |
| Building Control Application | £200 to £400 | Required for structural work |
| Steel Beam (RSJ) Supply | £200 to £800 | Depends on span and load |
| Steel Beam Installation | £800 to £2,000 | Includes props, cutting in, welding plates |
| Wall Removal (Non Structural) | £300 to £800 | Demolition and disposal |
| Wall Removal (Structural) | £500 to £1,500 | More complex, temporary support needed |
| Making Good (Plastering) | £400 to £1,000 | Ceiling, floor, and wall repairs |
| Electrics Relocation | £200 to £600 | Moving sockets, switches, lighting |
| Skip Hire | £200 to £400 | For rubble disposal |
Total Project Costs
| Project Type | Cost Range | Typical Duration |
|---|---|---|
| Partition Wall Removal | £800 to £2,000 | 1 to 2 days |
| Single Structural Wall (small opening) | £2,500 to £4,000 | 3 to 5 days |
| Single Structural Wall (full width) | £4,000 to £6,000 | 5 to 7 days |
| Kitchen Diner Conversion (two walls) | £6,000 to £12,000 | 1 to 2 weeks |
| Complete Ground Floor Open Plan | £10,000 to £20,000+ | 2 to 4 weeks |
Step by Step Process
The typical process for removing a load bearing wall.
Identify Wall Type
Determine if load bearing or partition. Look at joist direction, wall thickness, and stacking through building.
Get Structural Engineer Survey
For load bearing walls, engineer calculates beam size, support requirements, and provides drawings.
Building Control Application
Submit application with engineer's drawings. Wait for approval before starting work.
Hire Contractor
Get quotes from builders experienced in structural work. Check insurance and references.
Install Temporary Support
Acrow props support ceiling and structure while wall is removed and beam installed.
Remove Wall and Install Beam
Wall demolished, steel beam lifted into position, secured with padstones or steel posts.
Making Good
Floor patched where wall was, ceiling repaired, plastering to beam casing, decoration.
Building Control Sign Off
Inspector checks work, issues completion certificate. Essential for selling.
Open Plan: Pros and Cons
Consider both benefits and drawbacks before committing.
Benefits
- More natural light throughout
- Better flow for family living and entertaining
- Modern, desirable layout
- Can increase property value
- Feels more spacious
- Better supervision of children while cooking
Drawbacks
- Loss of separate rooms (noise, privacy)
- Cooking smells spread through home
- Heating larger space can cost more
- Less wall space for furniture
- Noise travels more easily
- Structural work can be expensive
Key Takeaways
Calculate Your Open Plan Project Cost
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