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Loft Conversion Structural Engineer
Ridge beam design, floor joists, wall plates and connections — everything your loft conversion needs to pass Building Control, on the delivery date you choose. Dedicated engineer throughout.
Three things you always know
Every job runs through the same process, so every customer gets the same three answers.
The price, before you commit
Tell us about the project and we’ll tell you the price and the steps that follow. No hourly rate. If the job changes, there is a free change request on every job.
The turnaround, chosen by you
Pick how fast you need it, and pay less if you can wait. You get a date to work back from.
Every step, in one place
Never wonder where it’s up to — just look. Your project hub shows what is happening now, what is next and anything we need from you, with your drawings, documents and invoice alongside. Share it directly with everyone involved in your project.
Structural Engineer for Loft Conversion Work
A loft conversion will involve significant modifications to the structure of a roof. Since the roof of a building is vital to its overall integrity, a structural engineer will be required to assess its load-bearing capacity and determine whether or not additional support would be necessary.
A loft conversion structural engineer will have significant input on the design of a project. Our team is trained to advise you on how best you can optimise your project — including how the existing space can be maximised, the best ways costs can be reduced, and more.
Other benefits of a structural engineer for loft conversion specific design work includes:
- Optimise Design: A skilled member of the PorthouseDean team will be able to optimise the design of key structural elements. This includes considering the size and locations of the beams. They will also consider factors like how shallow the joists and beams are. The more shallow, the more headspace.
- Minimise Mistakes: Having an expert on your side will allow you to see potential issues early, so you can prevent any potentially costly mistakes during the process.
- Efficient Construction: With independently audited ISO 9001:2015 quality management systems in place, your project’s design process will be as streamlined as possible. Accurate calculations and simplicity when presenting them will cut out any errors and ensure that contractors can work without delay.
- Value Engineering: As experienced structural engineers, our team are well-versed in value engineering and can pinpoint opportunities to save costs without needing to compromise on quality or safety.
Our Architectural Partners
What we cover
Everything Building Control needs to approve your project first time.
- Ridge beam design and specification
- New floor joist sizing — spans, bearing details and connections
- Steel beam design over any dormer or new wall openings
- Wall plate, rafter and wind post connection details
- Foundation implications where new loads are introduced
- Head-height optimisation — shallower beam specs where structurally possible
- Virtual site visit included — an in-person visit can be added at checkout
- Contractor pack: clear drawings to build from, start to finish
What every quote includes
We don't strip things out to make the headline price look cheaper. This is the full package, every time.
Full structural calculations
Beam specs, column calculations, foundation details, load assessments — everything your project needs.
Building Control documents
Submission-ready, and 100% approved by building control: if yours aren't, you get a refund. Your engineer handles any queries from BC directly.
Contractor pack
Clear drawings and instructions to build from on site. Dimensions, connections and installation notes included.
A free change request
Building Control changes, contractor modifications, design adjustments — the first change is on us, and further changes cost less than a new quote.
£500,000 PI insurance
Professional indemnity cover on everything we produce.
Ground conditions check
Site-specific ground assessment integrated into the foundation design. Helps avoid unexpected foundation costs.
Virtual site visit
Included with every project. Your engineer guides you through capturing measurements and photos via video call.
Dedicated engineer
One person who knows your project. Not a different voice every time — same engineer from quote to Building Control.
Pay by card, bank transfer, or Klarna — split into 3 interest-free payments. See the full process →
How it works
From quote to delivery, the same process every time. No surprises.
Tell us about your loft and a fixed price comes back by email. Every instant quote is reviewed by an engineer before it's confirmed.
One dedicated structural engineer is assigned to your project. They introduce themselves, review what you've submitted, and complete a virtual site visit (included). One contact from here to Building Control approval.
Full loft conversion calculations on the date you choose — ridge beam, joist sizes, wall plate and connection details, all in a contractor-ready pack. Your engineer walks you through it before it goes to site. Building Control queries handled.
A delivery date you choose. 100% building control approval, or a refund. Dedicated engineer throughout. See how it works →
Ready to get your loft conversion calculations?
A clear price and a delivery date you choose. Every quote reviewed by an engineer.
