Doubled steel beams kept ceilings below untouched.
Loft conversion, Epsom
Slim doubled beams keep the floor about 150 mm deep.
Structural engineer in Surrey for beams, lofts and extensions
Steel beam calculations, loft and extension design and structural reports from chartered engineers who visit your site. One fixed fee, in writing, within 24 hours.
Chartered engineers [confirm] · Professional indemnity insured [state limit] · Building control queries included
Get a quote / quick enquiry
Tell us about your project and we will reply within 24 hours.
Our structural engineering services
Steel beam (RSJ) calculations
Beams, foundations, floors and roofs for Building Regulations Part A.
From £850 + VATLoft conversion and extension design
Complete structural design, coordinated with your architect.
From £950 + VATStructural reports and surveys
Cracks, movement, subsidence and pre-purchase concerns.
From £750 + VATTemporary works
Propping, underpinning, hoarding and method statements.
Quoted per jobWhat are you planning?
Pick your project for an honest answer on whether you need an engineer, typical cost and timing.
Structural engineer questions, answered fast
What does a structural engineer do?
A structural engineer works out how a building carries its loads and designs the beams, foundations and supports needed when you alter it. For home projects the output is drawings and calculations that building control checks against Part A of the Building Regulations.
When do I need one?
When you remove or open up a load-bearing wall or chimney breast, convert a loft, build an extension, underpin, or have concerns about cracks or movement.
What does it cost in Surrey?
Our fixed fees start from £850 + VAT for a single beam design with a site visit, £950 + VAT for a loft conversion, £950 + VAT for an extension and £750 + VAT for a structural report. Prices last reviewed October 2026.
How long does it take?
We quote within 24 hours, visit within about 3 to 5 working days, and a typical loft or extension pack follows about 10 to 12 working days after the visit.
We make every step simple
- 1Get a quoteForm, call, WhatsApp or email. Reply within 24 hours.
- 2Approve your fixed feeYou see what is included before paying.
- 3Site inspectionAbout an hour for a typical house, within 3 to 5 working days.
- 4Pack deliveredAbout 10 to 12 working days for a typical loft or extension.
Architects
Early structural input, clear sketches and quick answers so your drawings keep moving.
Work with usHomeowners
Plain-English advice and a fixed fee for extensions, lofts and wall removals.
Check your priceBuilders and contractors
Permanent and temporary works design, surveys and site queries answered fast.
Get a quoteOver 200 projects completed across Surrey
Happy customers
50extensions, lofts and refurbishments
102steel beams designed
250site visits
95%of clients from recommendations
Clear prices, no surprises
Most homeowner jobs fit these starting prices. We confirm your exact fee in writing before any work begins, and answering building control and builder queries is included.
- Site visit, drawings and calculations
- Calculations to British Standards and Eurocodes
- Every design cross-checked internally
- Support while your builder works
| Project | From, ex VAT | From, inc VAT |
|---|---|---|
| Single beam design with site visit | £850 | £1,020 |
| Loft conversion | £950 | £1,140 |
| House extension | £950 | £1,140 |
| Full refurbishment | £1,500 | £1,800 |
| Structural report, three-bed house | £750 | £900 |
Larger homes cost more. [Confirm all prices before launch.]
Our recent projects
[Replace with your own projects and photos. Keep client addresses out of captions and file names.]
One beam and temporary props opened the kitchen.
Rear extension, Leatherhead
One new beam opens the kitchen, with props designed for the builder.
Sequenced underpinning with a structural report.
Underpinning, Dorking
Sequenced underpinning beneath a period house.
Frame check and floor upgrade for new flats.
Mixed-use frame, Guildford
Steel frame check for a shop-to-flats change of use.
Meet your engineer
[Engineer name], CEng MIStructE, 5 years designing homes, extensions and refurbishments across Surrey and South-West London.
[Two sentences on background, the projects you enjoy and why you started the firm. Add a real photo of you on site.]
- Chartered Engineer, member of the Institution of Structural Engineers [confirm]
- Professional indemnity insurance [insurer and limit]
- Every design checked internally before it leaves us
Great reviews from our clients
★★★★★[Real Google or Trustpilot review, linked to its source.]
★★★★★[Review from an architect or builder about speed and site support.]
★★★★★[Review about clear advice and a fixed fee.]
We cover Surrey and South-West London
Based in Epsom, we visit sites across the county, usually within days of your go-ahead.
- Epsom and Ewell
- Leatherhead
- Dorking
- Reigate
- Guildford
- Woking
- Esher
- Sutton
- Kingston
- Richmond
- Wimbledon
- Croydon
Why choose Surrey Hills Engineering?
[One short paragraph on who you are, your qualifications and why clients stay with you.]
Building regs readyWritten for Part A submissions
Chartered engineersCEng MIStructE [confirm]
Transparent feesFixed price in writing
Practical designsEfficient, buildable steelwork
Clear adviceNo jargon, no surprises
Site supportFast answers during the build
Free homeowner’s checklist and sample pack
See what a calculation pack looks like, plus a one-page checklist of what to send an engineer for a fast, accurate quote.
Frequently asked questions
Straight answers before you pick up the phone.
Do I need a structural engineer to remove a wall or chimney breast?
If the wall or chimney breast carries load, yes. An engineer confirms what it supports and designs the steel beam and supports so the work meets Building Regulations Part A. If you are unsure whether it is structural, we can tell you on a site visit.
How much does a structural engineer cost in Surrey?
A single beam design with a site visit starts from £850 + VAT. Loft conversions start from £950 + VAT, extensions from £950 + VAT and full refurbishments from £1,500 + VAT. A structural report on one issue starts from £750 + VAT. We confirm a fixed fee in writing before you pay.
How much does a steel beam (RSJ) calculation cost?
A single steel beam design with a site visit starts from £850 + VAT with us. Some firms charge less for calculations only, with no site visit. We include the visit because the real wall, bearings and loads decide the design, and we answer building control queries at no extra charge.
Do I need a structural engineer for a loft conversion?
Yes, in practice. A loft conversion changes the loads on floors and walls and usually needs new steel beams, so building control expects engineer-designed calculations and drawings.
How can I tell if a wall is load-bearing?
Warning signs include walls running at right angles to the floor joists, walls directly under another wall or the roof, and thick internal walls near the centre of the house. These are only clues. An engineer needs to confirm it on site before anything is removed.
Can my builder or architect do the calculations?
Building control needs calculations from a competent person, normally a structural engineer. Builders often know common beam sizes, but that is not a design for your building, and architects usually rely on an engineer for the technical calculations.
How long does it take?
We quote within 24 hours on working days and visit site within about 3 to 5 working days. A typical domestic extension or loft pack takes about 10 to 12 working days after the visit. Structural reports take about 7 working days after inspection.
Will you answer building control and builder queries?
Yes. Answering building control queries and relevant builder queries about our design is included in the fixed fee.
What do you need to give me a quote?
The property address, a short description of the work and, if you have them, architect drawings or floor plans. Photos are enough to start.
Will my structural report be accepted by a mortgage lender?
Our reports are written by chartered engineers. Lenders differ, so check which qualifications your lender requires before you commission a report.
Do you need to move furniture during a structural survey?
No. A survey is a visual inspection and does not involve moving furniture or invasive work. If we recommend intrusive investigation we explain why and agree it with you first.
How do I pay?
Larger projects usually need a deposit before design starts, with the balance on invoice. We accept bank transfer.
Ready when you are
Tell us about the project and a real engineer will reply within 24 hours on working days.
0203 488 2363
Message us on WhatsApp
info@surreyhillseng.co.uk
Global House, 1 Ashley Avenue, Epsom, Surrey KT18 5AD
Monday to Friday, 08:30 to 17:30
Can’t get through? We’ll come to you
If we miss your call, you’ll get a text from us within seconds. Reply with your postcode and a line about the project, or send photos on WhatsApp, and we’ll respond within 24 hours on working days, usually sooner.
Worried about an unsafe structure right now? Call 999 if anyone is in danger, or your local council’s building control team.