Structural Calculations & Load Assessments in Brighton & Hove

Accurate beam sizing, structural evaluations, and engineer sign-offs — tailored for your build or renovation

Get a Structural Assessment Estimate

What’s Included in Our Structural Assessment Services

Beam Load Calculations

Steel or timber beam sizing based on your project requirements — including spans, loads, and support points.

Load Path Analysis

Assessment of how loads are transferred through your structure — crucial for safe modifications or extensions.

Engineer Sign-Offs

Formal structural letters or documents for Building Control approval — clear and compliant.

Propping & Support Specs

Temporary and permanent support guidance, including padstone sizes, pier details, and bearing requirements.

Structural Tie-Ins

Specifications for connecting new and existing elements to ensure stability, especially in renovation work.

Detailed Drawings (if required)

We can produce structural diagrams to accompany your architectural plans or contractor execution.

Rainbow Building Plumbing & Electrical Services place picture
Rainbow Building Plumbing & Electrical Services
5.0
Based on 34 reviews
review us on
Peter W. profile picture
Peter W.
1 month ago
Large External Painting and Decoration & Maintenance Competitive price, with fast and efficient work. Have used them for many years and will use again.
Justin M. profile picture
Justin M.
1 month ago
We engaged Rainbow to renovate our shower room. Very, very easy to work with - helpful with advice and support about what we needed to get done. Mark and Max were great - you couldn't ask for friendlier people. We had some teething issues (NOT the fault of Rainbow) which Rainbow helped to rectify and get the job complete. Recommended and we'd certainly use their services again.
Tina W. profile picture
Tina W.
7 months ago
The contractors were extremely professional and prompt. They explained everything they were doing throughout the process and I am extremely pleased with the quality of the work
Clara G. profile picture
Clara G.
8 months ago
We went to Rainbow building to get some work done in our kitchen before we could get a new kitchen fitted in. They did wonderful work and let us know of any issues or complication we would face. Mark and Max especially were really nice and we're really happy with the partial wall removal, tile removing and replastering work they did for us!
Louise P. profile picture
Louise P.
9 months ago
Great communication, friendly team. Flexible when I had delivery delays.
Dan G. profile picture
Dan G.
10 months ago
The Rainbow team first did some excellent work for us 10 years ago. And they have just finished some renovations in the last week, which has gone really smoothly. Kev is a great communicator, always able to offer his expert opinion on the work required and then gets the job done. The best in Brighton.
Graeme C. profile picture
Graeme C.
10 months ago
Needed a complete flat refurbishment to include new Kitchen, Bathroom, Flooring, Electrics, Plumbing and Decorating etc. Wanted a local contractor to take control of the whole project rather than trying to juggle lots of different Trades myself. Rainbow (Mark in particular) were able to manage the whole project from start to finish and totally transformed the place, as shown in the photos. I was particularly impressed with the Kitchen so a special shout out to Stephen
Johanna D. profile picture
Johanna D.
10 months ago
We had a great experience with Kev, Mark and their team. Our bathroom was gutted and then totally refitted, and the result looks brilliant! They were really communicative throughout the process, offered recommendations, and worked hard to resolve issues which popped up. Would definitely recommend. Thanks so much!
Daryn C. profile picture
Daryn C.
11 months ago
We’re absolutely delighted with our new bathroom. Kevin, Mark and the team transformed an old, tired space into a clean, modern and relaxing room that’s a real joy to use. There were a few unexpected challenges along the way, but everything was clearly explained and managed, so there were no nasty surprises with the budget. They were also very considerate of our circumstances at home, which made the whole process much easier. Professional, tidy, and great communication throughout – highly recommended!
Manda S. profile picture
Manda S.
1 year ago
Steel Beam Works / Plastering / External Render / Carpentry / Window Fitting We have used Rainbow several times over the years and always had excellent workmanship. This was our biggest work and we were a bit nervous but Mark and the boys were extremely capable, curteous and considerate. We were living on site and they did their best to mitigate dust affecting our living area. We also didn't have to endure a radio playing the same music again and again! They were also very reliable. Now they have gone, we actually miss them!
Rowan B. profile picture
Rowan B.
1 year ago
Another fantastic job completed at the property, this time a new kitchen fit. Mark, Kev and the wider team were fantastic every step of the way - very responsive and amazing attention to detail. Would highly recommend their services.
Stephen F. profile picture
Stephen F.
2 years ago
Good
emma L. profile picture
emma L.
2 years ago
Friendly, reliable and willing to take on smaller jobs as well as larger ones. The work was of a high standard and communication was clear and simple. I wouldn’t hesitate to happily recommend Rainbow and will certainly use them again in the future.
Tilly U. profile picture
Tilly U.
2 years ago
From the very first on-site meeting with Kevin Viney at Rainbow Building Plumbing & Electrical Services we were confident in the advice given, and suggestions made. Major building renovations are a daunting task, so with Rainbow we felt we would be in safe hands if we engaged them. And we weren’t disappointed. Throughout the project those things that were most important to us were achieved, many requiring precision down to the millimetre. And when unforeseen issues arose, as they do in older buildings, whilst these caused us some sleepless nights, Rainbow confidently dealt with them enabling us to return to calm and carry on. Mark Burns, the builder and project manager, has been amazing with his wide knowledge, craftsmanship, and meticulous attention to detail - and his calm manner under pressure, has resulted in every aspect of the work carried out by Rainbow to be of a high standard and the best it could be. Thank you Rainbow - and if ever we are crazy enough to embark on another renovation project we would definitely be calling you to see it through.
John L. profile picture
John L.
2 years ago
Rainbow have carried out a complete refurbishment of my flat to an impeccable standard. They also landscaped the garden. Both look unrecognisable and I wouldn't hesitate to recommend Kev, Mark, Steve and the others at Rainbow.
Photo from customer reviewPhoto from customer reviewPhoto from customer reviewPhoto from customer reviewPhoto from customer review
Danny M. profile picture
Danny M.
2 years ago
Hi there - we have just had our kitchen fitted by Rainbow, and I would heartily recommend them to anyone else in Brighton. They were super organised, friendly and easy to communicate with, got the job done quickly AND it looks really good! Definitely good value for money as well! Cheers Danny
Teresa L. profile picture
Teresa L.
2 years ago
A trustworthy and responsive Building Company? Yes, it is rare but Rainbow fits the bill. Kev and his staff/contractors know their stuff. Kev was always responsive and reliable when contacted - a big plus in my book - and his workers left the place as clean and tidy as possible after a major structural work. Definitely recommend
andy B. profile picture
andy B.
2 years ago
I have nothing to say bad about these guys - Kev and his team are awesome they did an amazing job of knocking through out kitchen and dining room - putting in new steels and installing a new kitchen - Mark was project manager and i have not met a nicer guy who talked us through every step of the way Gary the plumber was amazing - Steve the Carpenter was utterly brilliant - and Danny the tiler super quick and awesome :) would def recommend to anyone - plus getting them back to do our new bedroom and ensuite later this year :)
Claude L. profile picture
Claude L.
2 years ago
Went above and beyond will always use again
Aliénor D. profile picture
Aliénor D.
2 years ago
My go to guy as of now . Boiler swapped in one day for cheap

Need Structural Calculations?

From beam sizing to structural approvals, we provide precise engineering assessments to keep your project safe and compliant. Let’s get it sorted.

Get a Structural Assessment Estimate

Why Clients Trust Rainbow for Structural Engineering

📐

Engineer-Led & Fully Insured

Work completed or reviewed by qualified structural engineers — backed by insurance and trusted by Building Control.

📊

Accurate, Compliant Designs

All calculations meet UK structural codes and are tailored to your layout, span, and loading needs.

📄

Clear Reports & Sign-Offs

We provide easy-to-understand structural letters or drawings for submission and contractor use.

When You Might Need This

You’re removing a load-bearing wall or chimney breast
You’re planning a loft conversion, extension, or new build
Your builder needs official beam specs before proceeding
You need structural documents for Building Control
You want assurance that your renovation won’t affect safety
You're reconfiguring layout or opening up spans

How We Work

1

Request Your Estimate

Hit “Get a Free Estimate” to tell us about your project and book a visit from our structural team.

2

Site Visit & Assessment

We inspect the area, take measurements, and understand your build plans, loads, and layout.

3

Receive Engineer Calculations

You’ll get a written breakdown with beam specs, support points, and signed-off documents if required.

4

Contractors or Building Control Ready

Your structural documents can be submitted for approval or passed straight to your builder or architect.

Start Your Structural Planning

Our engineers can help with everything from a simple beam to full load path analysis. Let’s ensure your project is strong and compliant from day one.

Get a Structural Assessment Estimate

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Related Structural Engineer Services

Useful Links for Structural Projects in Brighton & Hove

Structural Assessment FAQs

Do I need structural calculations for a load-bearing wall removal?

Yes — to ensure safety and compliance, you’ll need calculations for the replacement support like an RSJ or lintel.

Can you provide documents for Building Control?

Absolutely. We issue signed engineer’s letters or structural drawings that meet local authority standards.

What’s included in a structural assessment?

We assess loads, span, and layout, then issue tailored calculations and specs for beams or supports — including padstones, bearings, or tie-ins.

How long does the process take?

Most assessments are completed within 3–5 working days after our site visit. Urgent cases can be expedited.

How do I get started?

Request a free estimate and we’ll arrange a visit to discuss your plans and begin the structural assessment.