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Structural Engineering + Project Management

Party Wall Structural Calculations

Structural calculations for extensions, loft conversions and renovations affecting a shared wall or boundary — coordinated with your party wall surveyor from day one.

Many extensions, loft conversions and basement projects trigger the Party Wall etc. Act 1996 — usually because the work involves a shared wall, or excavation near a neighbour's foundations. Structural calculations and party wall matters are separate processes, but they need to move in step: your structural design often needs to be finalised before a party wall surveyor can issue notices and prepare an award.

How we help

What we don't do

We're structural engineers, not party wall surveyors — we don't serve notices or draft the legal award ourselves. If you don't already have a party wall surveyor, we're happy to recommend one we've worked with before.

Do I need a party wall agreement for my extension or loft conversion?

If your work involves a shared wall with a neighbour, excavating near their foundations, or building on the boundary line, the Party Wall etc. Act 1996 likely applies. A party wall surveyor handles the legal notice and agreement — we handle the structural calculations that typically sit alongside it.

Are structural calculations and party wall agreements the same thing?

No — they're separate but often needed together. Structural calculations prove your design is safe and are what Building Control checks. A party wall agreement is a legal process with your neighbour, handled by a party wall surveyor, needed when work affects a shared wall or boundary.

Can you coordinate with my party wall surveyor?

Yes — as part of our project management service, we liaise directly with your party wall surveyor to keep the structural design, notices and timeline aligned, so nothing holds up your build.

Have a project involving a party wall?

Get in touch and we'll respond within 24 hours with a quote and timeline.

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