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Structural engineering expertise

Frequently Asked Questions

Do I need a structural engineer?

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If you’re removing a wall, adding a loft, extension, or altering anything structural, you’ll likely need a structural engineer to provide calculations for Building Control and your builder. We help make this part simple.

Can you tell me if a wall is load-bearing from photos or plans?

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Not always. We can give a good indication, but confirmation ideally happens on-site by a builder or during strip-out. If in doubt, we offer a Load-Bearing Wall Investigation service.

What’s included in your quote?

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Our quotes always state what’s included and excluded. Typically, we provide:

  • Structural calculations for Building Control.
  • Marked-up sketches if needed for your builder.
  • One free revision.

We don’t usually include:

  • Site visits (unless requested).
  • Retaining wall or foundation analysis unless clearly specified.
  • Detailed fabrication drawings.

Do you offer site visits?

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Yes, we offer optional site visits, usually booked separately. These are useful if the structure is unclear or if your builder/Building Control requests one.

How long does it take to get my calculations?

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Once we have everything we need (final drawings, brief, payment), most jobs are completed within 5 working days. We’ll always confirm if anything’s likely to take longer.

What if Building Control asks for more?

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We’ll revise or add extra details if needed. In most cases, a Minor Change Request will cover it, unless the change is major. We’ll advise the most efficient route.

Do you deal with Building Control directly?

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No – we provide the documents you or your architect can submit. Most Building Control teams are happy with our format, but we can tweak things if needed.

What if I’m not ready to start yet?

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That’s fine. You can still get a quote now, and we’ll keep it on file. Most quotes are valid for at least 30 days, and we can often honour the price beyond that if scope doesn’t change.

Do you provide structural warranties or certificates?

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We don’t issue warranties, but our calculations are signed by qualified engineers and accepted by Building Control. If your lender needs a certificate, let us know—we can advise the best approach.

Can you do steel fabrication drawings?

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Our standard service covers design calculations only. We don’t supply fabrication drawings unless requested as an add-on. Most fabricators can work from our beam specs and sketches.

Simple Workflow

We’ve streamlined the structural engineering process to keep your projects moving forward

1

Upload Plans

Upload your architectural plans through our secure portal and provide project details.

2

Get Calculations

Your dedicated engineer delivers comprehensive calculations within 7-10 days.

3

Make Revisions

Need changes? No problem. Request revisions easily with our hassle-free process.

4

Submit to Building Control

Submit our building control-ready calculations with confidence.

5

Celebrate Smooth Projects

Enjoy the benefits of a streamlined project with no engineering bottlenecks.

Upload Your Plans

  • Secure client portal access
  • Drag & drop plans
  • Instant submission confirmation

Receive Detailed Calculations

  • Contractor-ready formats
  • Clear diagrams and specifications
  • Comprehensive design rationale

Seamless Revision Process

  • Direct communication with your engineer
  • Quick turnaround on changes
  • Clear tracking of all revisions

Building Control Ready

  • Compliant documentation
  • Submission support when needed
  • Easy-to-understand technical details

Project Success

  • On-time project delivery
  • No engineering delays
  • Happy clients and contractors

What Our Clients Say

★★★★★

They gave professional advice which saved money, easy to understand documentation in an appropriate time frame and quickly revised plan after making a structural change. Totally satisfied with result and cost. Would highly recommend and use again without doubt.

Susan Chandler

March 2025

★★★★★

Have used Porthouse Dean several times. Great turn around on calculations and always available to help with any queries…highly recommended.

Matt Wood

March 2025

★★★★★

I run The Building Guidance Partnership – helping homeowners manage their home projects. For my own home I used Chris Porthouse and his amazing team. High quality value engineering / design. A personal service. I would have no hesitation in recommending them. Absolutely delighted.

Sunil Radia

February 2025

★★★★★

Excellent service, especially the on-line design review with the structural engineer. Thankyou.

Neill

February 2025

★★★★★

Easy to communicate with, good processes and turn around time. Made changes.

JD Rawal

January 2025

★★★★★

Good communication, prompt delivery with an option of a quicker delivery if preferred. The design appears to be well thought through.

S Jensen

December 2024