Structural Engineering for Home Extensions, Alterations & Refurbishments

Clear structural design, plain-English advice and optional support during your build — so you and your builder can move forward with confidence.

Tell Us About Your Project

Starting a Building Project Can Feel Uncertain

If you’re planning an extension, removing a wall, or altering your home, structural engineering is often required — but it’s not always clear what happens next.

Most homeowners want to know:

  • What needs to be designed
  • What Building Control requires
  • How it affects their builder
  • What happens if something unexpected appears on site

We guide you through the process step-by-step and support your builder when it matters most.

How Structural Engineering Support Works

  • Step 1 — Tell Us About Your Project

    Send drawings, sketches or just a description. We’ll confirm what structural input is required.

  • Step 2 — We Design What’s Needed

    We prepare structural calculations and drawings for Building Control and construction.

  • Step 3 — Build With Engineering Support (Optional)

    If required, we remain available during the structural phase to support your builder and help resolve any site surprises quickly.

Simple process. Clear decisions. No confusion.

Why Engineering Support Can Matter Once Work Starts

Even with good drawings, existing homes can contain unknowns.

Common Examples Include

⚠️ Shallow or poor foundations
⚠️ Hidden structural alterations
⚠️ Weak masonry where beams need support
⚠️ Unexpected services in structural locations

When this happens, work often pauses while answers are found. Having engineering support available during the build helps keep projects moving and decisions clear.

Choose the Right Level of Structural Support

We offer two ways to work together depending on your project and how much support you’d like during construction.

Option 1 — Structural Design

Best for straightforward projects with experienced builders.

Includes
  • Structural calculations
  • Steel beam design
  • Foundation design
  • Structural drawings
  • Building Control-ready information
Once issued, your builder delivers the work and further site input can be arranged if required.

Supporting You and Your Builder

The most successful projects happen when the structural engineer, builder and homeowner work together.

We Regularly

  • Speak directly with builders
  • Review site conditions
  • Support Building Control discussions
  • Help resolve unexpected issues

This Keeps

  • Communication clear
  • Responsibility defined
  • Projects moving forward

Who Does What

Structural Engineer

  • Designs structural solutions
  • Prepares calculations and drawings
  • Provides advice where structural issues arise

Builder

  • Responsible for construction
  • Responsible for sequencing and installation
  • Responsible for site safety

Building Control

  • Checks compliance with regulations
  • Does not design or manage the project

Clear roles reduce confusion and keep projects running smoothly.

Projects We Commonly Support

Rear & Side Extensions
Wall Removals & Knock-throughs
Chimney Breast Removals
Loft Conversions
Structural Refurbishments
Internal Alterations
300+
Domestic Structural Projects Delivered
12+
Years of Engineering-Led Construction
100%
Building Control Approval Rate

Common Questions

Do I need structural calculations for a wall removal?

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Yes — any structural alteration requires calculations for Building Control approval.

Will you speak to my builder?

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Yes. We often work directly with builders to keep projects moving.

What if something unexpected is found on site?

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We can provide additional input or design updates where required.

Do I need the ongoing support option?

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Not always. For simple projects, design-only may be sufficient. Where structural works are complex, many homeowners choose ongoing support for reassurance.

Start With a Conversation

Tell us about your project and we’ll confirm:

  • What structural input is required
  • What happens next
  • The best level of support
Tell Us About Your Project

Trust PF & Co Construction Ltd for on-time, on-budget, top-quality construction solutions—your one-stop-shop for building excellence