When Do You Need a Structural Engineer for Home Renovations?

In this blog, our team will help you understand what a structural engineer does, when to hire one, and why working with experts like Shire is a smart choice.

November 26, 2025

Structural Engineering for Home Renovations

Planning a home renovation, extension, or loft conversion? It’s essential to understand when you need to bring in a structural engineer. Home renovations can seem straightforward, but if you’re altering the structural elements of your home, such as walls, foundations, or beams, it’s crucial to get professional advice. 

In this blog, our team will help you understand what a structural engineer does, when to hire one, and why working with experts like Shire is a smart choice.

What Is a Structural Engineer and What Do They Do?

A structural engineer is a professional who designs and assesses the strength and stability of buildings and other structures. They ensure that buildings can safely handle the weight and forces placed on them by gravity, weather, and human activity. From foundations to roof trusses, structural engineering at Shire helps homeowners ensure that all parts of their property are safe and secure during a renovation. 

If you’re asking, “What does a structural engineer do?” their role includes:

  • Assessing load-bearing structures like walls, beams, and foundations to ensure they can support added weight.
  • Designing structural solutions for renovations, ensuring your building stays safe throughout the process.
  • Inspecting existing structures for potential weaknesses or damage, such as cracks, foundation issues, or subsidence.

When Do You Need Structural Engineering for a Home Renovation?

Some home renovation projects don’t require a structural engineer, but many do. Here are key scenarios when our team can come in to help:

1. Building an Extension

If you're adding a side, rear, or double-storey extension, you’ll need structural engineering. Extensions change the way weight and forces are distributed throughout your home. At Shire, our professional engineers will assess your existing structure and ensure that your new extension integrates seamlessly and safely with the rest of the building.

2. Removing or Modifying Walls

If you're removing internal walls or opening up your space, especially when dealing with load-bearing walls, it’s important to consult a structural engineer. They’ll determine whether the wall is load-bearing and, if it is, how to properly support the structure while making the changes you want.

3. Loft Conversions and Other Major Changes

When converting your loft into usable space or adding new floors to your home, you’re altering how weight is distributed. If you’re looking for a ‘structural engineer near me’, our Shire team will make sure that the floor joists, supports, and other structural elements are designed to bear the new loads without compromising safety.

5. Structural Damage or Weaknesses

If your home shows signs of structural damage, such as cracks in the walls, uneven floors, or sagging ceilings, a structural engineer should be the first professional you call. We will assess the damage, identify the cause, and recommend a solution to restore the building’s integrity.

6. Underpinning and Foundation Work

If your home is experiencing subsidence or if you plan to dig into the foundations for any reason, a structural engineer must assess the ground conditions and ensure that your foundations are strong enough to support any changes or additional weight.

What Happens If You Don’t Hire a Structural Engineer?

Skipping the step of hiring a structural engineer can lead to several risks:

  • Safety hazards: Without proper structural planning, your home may become unsafe, putting your family and property at risk.
  • Building regulation issues: Most major changes to your home require approval from building control. Structural designs and calculations from a professional engineer are often required for this approval.
  • Increased costs: It may seem tempting to skip hiring an engineer to save money, but cutting corners can lead to costly mistakes and repairs down the line.
  • Property value: If structural issues arise or unapproved changes are made to your home, it can negatively impact your property’s value and make it harder to sell in the future.

In the long run, hiring a structural engineer ensures the safety of your home and the success of your renovation project.

Why You Should Choose Our Structural Engineers at Shire

Founded in 1988, we are a UK-based company specialising in innovative and sustainable structural engineering solutions. Our focus is on providing cost-effective, non-disruptive, and sustainable engineering services. Whether you’re making small property renovations or large-scale changes to your property, our approach ensures that your home remains safe, stable, and compliant with building regulations.

Get in Touch with Our UK Structural Engineers

If you're planning any renovation or structural work on your home, don’t hesitate to contact us for structural engineering. Our expert team can guide you through the process and ensure that your project is safe, compliant, and successful.

Contact Our UK Structural Engineering Experts

Get in touch with our trusted structural engineering consultants and experts to discuss your project and see how we can help.

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