Question 1

Do I need a structural engineer for a house extension?

Accepted Answer

Yes, a structural engineer is required for most house extensions to calculate the load-bearing requirements of new walls, roofs, beams, and foundations. These structural calculations are essential for Building Control approval and to ensure your extension is safe and compliant.

Question 2

Can a structural engineer design RSJ steel beams for wall removal?

Accepted Answer

Absolutely. If you're removing a load-bearing wall, a structural engineer will assess the structure and specify the correct size and type of RSJ (Rolled Steel Joist) needed to support the load above. These calculations are submitted to Building Control for sign-off.

Question 3

How much does a structural engineer cost in London?

Accepted Answer

Structural engineer costs in London typically range from £250+, depending on the complexity of the project. At Shorplans, we offer transparent, fixed-fee quotes for all structural work, including calculations, drawings, and Building Control support.

Question 4

What’s the difference between an architect and a structural engineer?

Accepted Answer

An architect focuses on the design, layout, and aesthetics of a building, while a structural engineer ensures the building is structurally sound and meets safety standards. Most projects benefit from both working together — which is why Shorplans coordinates both services in-house.

Question 5

Do I need structural calculations for Building Control?

Accepted Answer

Yes, Building Control often requires structural calculations for any work involving changes to load-bearing walls, foundations, beams, or roof structures. These calculations must be provided by a qualified structural engineer to demonstrate the work complies with UK building regulations.

Question 6

Can you provide structural drawings as well as calculations?

Accepted Answer

Yes, we provide detailed structural drawings alongside your calculations. These drawings show how beams, columns, and supports should be installed — helping builders work accurately and speeding up Building Control approval.

Question 7

When should I hire a structural engineer during my project?

Accepted Answer

It’s best to engage a structural engineer once you have a rough layout or architectural plan. Early involvement helps avoid delays, ensures your design is structurally feasible, and allows for accurate budgeting before you start construction.

Question 8

Can a structural engineer inspect cracks or subsidence?

Accepted Answer

Yes. If you're concerned about cracks, movement, or possible subsidence, a structural engineer can inspect the property and provide a professional report outlining the cause and necessary remedial work. These reports are often used for insurance or mortgage purposes.

Question 9

Do I need a structural engineer for a loft conversion?

Accepted Answer

Yes, loft conversions typically require structural input to calculate beam sizes, floor loading, and support for dormers or roof alterations. Our engineers provide all required calculations and drawings to get Building Control approval.

Question 10

Can I get structural calculations without full architectural plans?

Accepted Answer

Yes — if you're only making structural changes like removing a wall or installing a beam, we can often work from basic measurements or arrange a site visit. For more complex projects, architectural drawings will help us provide a more accurate assessment.

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