Richmond upon Thames, London
Structural calculations in Richmond upon Thames
Structural calculations for a Richmond upon Thames house start at £295 including VAT. The council's building control terms expect them with the application whenever the work needs them, so a new beam, a lost chimney breast or a loft floor is best calculated before you apply.
From £295 (VAT included)
- MCIAT chartered
- £2m PI insured
- LABC Partnered
- Fixed fees, VAT included
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How we work on structural calculations
Four steps from first call to approval.
Enquiry and constraints check
We check the property against conservation areas, listed status, Article 4 directions, tree preservation orders, flood zone and planning history. We choose the right route and send a fixed quote.
Measured survey
We survey the house on one datum: rooms, levels, boundaries, drains, trees and the neighbours' windows that the 45° and 25° tests depend on.
Building regulations
Technical drawings are coordinated with the structural engineer's calculations, the drainage and the planning conditions.
Approval and hand-over
Building control approval, then a next-steps pack covering the commencement notice, party wall timing and CIL.
Free redraws until approval. Every drawing set is checked independently, and the checker is never the person who drew it.
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Structural calculations in Richmond upon Thames and the council's terms
Richmond states its paperwork rule plainly. Section 4.1 of its building control terms says an application, a building notice included, 'must include all required plans, structural calculations and fire strategy' (where required). Calculations therefore sit beside the plans on day one, and that is how we assemble every Richmond package.
Lofts show the cost side. The council's loft conversion table reads Loft up to 40 m2: building notice GBP 1,010 inc VAT (full plans GBP 404 plan + GBP 606 inspection); 40-60 m2: GBP 1,211 building notice. Those sums pay for the council's checking. Designing the steel in the loft is separate work, and it is what our calculations cover.
Ground conditions deserve a look as well. The borough's Adaptation and Resilience Strategy puts most of it on gravel and records a rising shrink-swell subsidence risk. Clay is the exception, in these places: Pockets of London Clay: Richmond Hill, East Sheen. Clay shrinks in dry summers, so on those streets we check how deep a new wall or padstone bears before the engineer settles any size.
Local figures for Richmond upon Thames
| Measure | Value | Period | Source |
|---|---|---|---|
| Richmond terms require applications, including building notices, to include all required plans, structural calculations and fire strategy where required. | 'must include all required plans, structural calculations and fire strategy' (where required) | — | richmond.gov.uk, Building Control terms and conditions, Section 4.1 |
| Richmond loft conversion charges; base charges effective 1 April 2025. | Loft up to 40 m2: building notice GBP 1,010 inc VAT (full plans GBP 404 plan + GBP 606 inspection); 40-60 m2: GBP 1,211 building notice | — | richmond.gov.uk, Building Control fees 2025, Table 1, LC01-LC02 |
| Richmond notes most of the borough is on gravel with pockets of London Clay (Richmond Hill, East Sheen) and a rising shrink-swell subsidence risk. | Pockets of London Clay: Richmond Hill, East Sheen | — | richmond.gov.uk, Adaptation and Resilience Strategy 2025-2035, Subsidence |
| All basement developments must prepare a Construction Management Statement (guidance in the Good Practice Guide on Basement Development); CMPs must meet Environment Agency regulatory positions on dewatering. | CMS for all basements | — | richmond.gov.uk, Richmond upon Thames Local Validation Checklist for All Applications (adopted 19 February 2026, in effect 20 February 2026), p.16 |
| Conservation areas | 85 named conservation areas published by the council | — | planning.data.gov.uk |
| Listed building entries | 819 list entries (Historic England, within the LPA boundary) | — | planning.data.gov.uk |
| Households living in a house | 59.8 % of households living in a house or bungalow (detached, semi-detached or terraced) | Census 2021 | nomisweb.co.uk |
| Householder decisions | 1,302 decisions | 1 July 2025 - 30 June 2026 | assets.publishing.service.gov.uk |
| Householder applications granted | 83.3 % | 1 July 2025 - 30 June 2026 | assets.publishing.service.gov.uk |
| Householder applications decided in time | 98.3 % decided within 8 weeks or an agreed extended period | 1 July 2025 - 30 June 2026 | assets.publishing.service.gov.uk |
| AD A para 2C23: max span of a floor supported by a wall, centre to centre of bearing | 6 m | — | gov.uk |
| Party Wall etc. Act 1996 s6(1), s6(2), s6(5) | Adjacent excavation notice at least 1 month before work: within 3 m and deeper than the neighbour's foundations, or within 6 m and cutting a 45° line from their foundations | — | legislation.gov.uk |
A blank value means the figure has not been published, not that there are none. Check your own address with the council.
Building regulations, layer by layer
The Approved Documents that shape most house projects, from structure to the application itself.
- A · Part A: structure
- Approved Document A: Structure, 2004 edition incorporating 2004, 2010 and 2013 amendments
- B · Part B: fire safety
- All dwellings: fire detection and alarm system minimum Grade D2 Category LD3 (BS 5839-6), mains-operated smoke alarms to BS EN 14604
- C · Part L: insulation
- New elements in existing dwellings, limiting U-values W/(m²·K): roof 0.15, wall 0.18, floor 0.18, windows 1.4 (or WER Band B), doors 1.4
- D · Part K: stairs
- 2.0 m clear headroom over stairs
- E · Full plans application
- Building control body must decide a full plans application within 5 weeks, or longer if agreed in writing
Basements and listed houses
A basement changes the brief. Richmond's local validation checklist sets two tests that touch the structure. One is CMS for all basements. The other is a basement statement confirming the structural method, with an engineer's self-certification that the building, its neighbours and nearby infrastructure stay stable.
Heritage raises the bar again. Richmond has 85 conservation areas and 819 Historic England list entries, 40 of them Grade I. The checklist asks for a Structural Impact Assessment when a basement is proposed at or near a listed building, and when a Building of Townscape Merit is to be demolished.
Where no report is demanded, the discipline stays. A beam in a listed house is sized to disturb as little original fabric as the loads allow, and its temporary support is drawn out so the builder does not improvise.
Everyday jobs in Richmond houses
About 59.8 per cent of Richmond households live in a house or bungalow, and houses keep producing the same three questions. Can the wall between kitchen and dining room come out? How wide can the opening at the back of an extension be? Will the existing floor carry a habitable loft?
Each answer starts on site. We record wall thickness, what sits above each opening and the direction of the floor spans, and the engineer starts from those facts. Beam schedule, padstone details and propping notes then go on a layout drawing that matches the drawn set, so builder and examiner read the same numbers.
Digging near a neighbour brings in the Party Wall etc. Act, and the notice period and trigger distances are in the table on this page.
Householder decisions in Richmond
Richmond decided 1,302 householder applications in its latest published year, granting 83.3 per cent and deciding 98.3 per cent in time.
Calculations go to building control, so those figures describe a different gate. They still help you sequence the work. If the project needs permission, our planning drawings in Richmond upon Thames take that route and the calculations follow once the design is fixed.
What you receive and what it costs
Calculations start at £295 with VAT included, fixed before you commit. After the survey you receive the calculations, a beam and padstone schedule and a layout drawing. A second chartered technologist checks the set before issue, and changes requested by building control are made free.
The same figures feed our building regulations drawings in Richmond upon Thames. For a basement or complex frame, the wider service sits under structural engineering in Richmond upon Thames.
Nearby boroughs and the wider service
The national picture is on our structural calculations page, and the borough as a whole is under architectural drawings in Richmond upon Thames. Across the river or the border, compare Kingston upon Thames, Hounslow and Wandsworth.
What you receive
Related pages
Other services in Richmond upon Thames
Structural calculations nearby
Questions
Does Richmond upon Thames building control need structural calculations?
Where the work needs them, yes. The council's terms say an application, including a building notice, 'must include all required plans, structural calculations and fire strategy' (where required).
Is my Richmond house on clay?
Most of the borough is gravel, with these exceptions: Pockets of London Clay: Richmond Hill, East Sheen. A survey and trial holes confirm what lies under your own foundations.
How much do structural calculations cost in Richmond upon Thames?
From £295 including VAT, fixed up front. Building control fees are paid to the council separately.
Do I need a report for a basement in Richmond?
Yes. The council records CMS for all basements, and the basement statement carries an engineer's self-certification on stability.
Sources and dates
- richmond.gov.uk, retrieved
- richmond.gov.uk, retrieved
- richmond.gov.uk, retrieved
- richmond.gov.uk, retrieved
- planning.data.gov.uk, retrieved
- planning.data.gov.uk, retrieved
- nomisweb.co.uk, retrieved
- assets.publishing.service.gov.uk, retrieved
- gov.uk, retrieved
- legislation.gov.uk, retrieved
- gov.uk, retrieved
- gov.uk, retrieved
- gov.uk, retrieved
- legislation.gov.uk, retrieved
- Contains public sector information licensed under the Open Government Licence v3.0.
- Contains OS data © Crown copyright and database right 2026.
- Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
- Contains Historic England data © Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026.
Tell us about your property.
We check the constraints, then send a fixed fee. Messages before 3pm get a reply the same working day.