Budget for site visits, reports, beam calculations and extension design work before structural building begins.
Applies to: UK homeowners. Engineering fees vary with complexity, region and the level of design responsibility.
Last checked: 3 October 2026
Key points
• Current 2026 guidance puts structural engineer hourly rates around £100–£200.
• A site inspection is currently published around £300 and a report around £700 in one major guide.
• RSJ calculations may be around £200 where separately priced.
• Complex residential design work can cost several thousand pounds.
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Typical 2026 fees
Current UK market guidance puts structural engineer rates around £100–£200 per hour, a typical site inspection around £300, a report around £700 and an RSJ calculation around £200.
What you are paying for
• Structural assessment.
• Load calculations.
• Beam or lintel specification.
• Drawings and details for Building Regulations.
• Coordination with architects or builders where needed.
Check the deliverables
Ask whether the fee includes the site visit, calculations, drawings, revisions and responses to Building Control queries.
Further sources
Additional published guidance and research used in this article.
Pricing methodology
BuildPair reviews current UK market pricing references when preparing cost guides. Published figures are budgeting ranges, not BuildPair quotes or guaranteed local prices. Compare current local quotes before appointing a tradesperson.
BuildPair provides general information and signposting, not legal, structural, electrical, gas or building-control approval. Requirements can change and the right answer depends on the work, contract, location and facts.
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