How we chose
We started from the Telford structural engineering practices Google Maps shows. Scheme memberships were sourced from the IStructE register, each firm's own website and the platforms checked [3]. Each business must first meet our basic checks: it is who it says it is, it is trading today and can be reached, and anything it must hold by law is in place. Five firms met all three. What customers say counts most toward the score, then qualifications, then whether the firm has traded two years or more and whether its cover is stated, then pricing clarity and website detail. All evidence is dated early September 2026.
How to hire
Match the professional to the job first. A structural engineer sizes beams, foundations and supports and produces the calculations building control signs off; an architect draws up how the space looks and fits together, often working from the engineer's measurements; a building surveyor reports on condition rather than designing new structure [1]. For an extension you will typically use an architect and an engineer together. When you first enquire, say which wall is coming out, which rooms are affected and what you want to build.
Treat any load-bearing alteration as notifiable work. Removing or altering a load-bearing wall needs Building Regulations consent, with the engineer's design and calculations submitted as part of the application [6]. In Telford you have two routes: a full-plans application with drawings and structural calculations checked before you start, ending in an approval notice, or a building notice for minor works such as taking out an internal load-bearing wall, where work can begin two days after a valid application is accepted [5]. Talk to Telford & Wrekin Building Control before you start if you are unsure which route fits.
Check competence before you book. There is no mandatory register for structural engineers, so membership of the Institution of Structural Engineers or the Institution of Civil Engineers is evidence of professional standing rather than a legal badge. Search the IStructE find-an-engineer service for firms near you and its members directory to confirm an individual's membership and continuing professional development record [3]. Chartered Engineer status sits on the Engineering Council's national register, assessed through licensed institutions [8]. Ask for the engineer's name, grade and membership details, then confirm them yourself rather than taking a logo at face value.
Ask about professional indemnity insurance before you instruct anyone. The IStructE code expects members to tell clients where such cover is not in place or is inadequate for the job, so a straight answer here is part of professional behaviour [4]. Get the insurer, the cover level and what the policy covers confirmed in writing alongside the fee. Firms that publish no insurance detail can still hold cover; the gap is that you cannot see it until you ask.
Get two or three fixed-fee quotes on the same written scope, so you compare like with like. Each quote should separate the site visit, the calculations, the drawings, liaison with building control and VAT, and name what counts as an extra — revisits, redesigns and site inspections during construction often sit outside the headline fee [1] [2]. Fixed fees suit defined jobs such as a beam calculation, while hourly billing only fits genuinely open-ended investigation, so agree a cap before you start [2]. Treat an outlier far above or below the rest as a question rather than a bargain.
Mind the neighbours in Telford's semis and terraces. Work to a shared wall, cutting into it or digging below a neighbour's foundations falls under the Party Wall Act, which requires you to give adjoining owners notice in the set form before work starts [7]. The Act sits apart from planning permission and building regulations approval, so allow time for agreement or a surveyor-led resolution alongside your other applications [7]. Tell your engineer where the boundaries lie at the first visit.
Close the job on paper, not a handshake. Your engineer should deliver signed calculations and drawings your building control surveyor accepts, and the surveyor inspects the steelwork and bearings at the key stages before issuing a completion certificate [5] [6]. Telford & Wrekin recommends holding that certificate before making final payment, and you will need it when you sell or re-mortgage [5]. File the calcs, the certificate, the invoice and any party-wall paperwork with your house deeds.
Pricing
As of summer 2026, published cost guides put a single beam or RSJ calculation at around £200, with load-bearing wall work averaging £400 [1]. MyBuilder's range runs £60–£950 depending on complexity, with a basic inspection at £175–£300 [2]. A structural survey typically costs £400–£1,000 and a written report £500–£2,000 depending on depth [2].
Full design work costs more because it carries drawings as well as calcs. Checkatrade's guide puts design work at £2,000 for a basic project and £10,000 for a complex one, with hourly rates of £100–£200 where the scope cannot be fixed up front [1]. MyBuilder similarly quotes £90–£200 an hour and advises agreeing a cap before work starts [2]. For a defined job such as one beam, always press for a fixed fee rather than open-ended hourly billing.
What moves the price is no mystery: the complexity of the structure, the size of the project and the property, and the type of job all shift the fee, with assessments cheaper than full design and larger homes costlier to inspect than small flats [1]. Intrusive investigation, extra site visits and liaison beyond the agreed scope add to the bill, so ask what sits outside the headline figure before you agree anything [1] [2].
Ask whether VAT sits on top of the quoted fee and whether building-control application and inspection fees are included, since guide prices and engineer quotes rarely bundle them. Telford & Wrekin quotes its building-control fees per job, so get that figure alongside the engineer's fee [5]. Get the scope in writing before work starts — calcs, drawings, visits, who answers building-control queries, and what triggers an extra charge — and agree payment stages with the balance due on the completion certificate [5].
Red flags
Sizes a beam or prices steelwork without visiting, asking for spans and drawings, or requesting photos of the structure.
Cannot name the engineer behind the calculations or give IStructE or ICE membership details you can check yourself [3].
Starts structural work with no Building Regulations application in place [5] [6].
Will not confirm professional indemnity insurance and its cover level in writing [4].
Quotes one fixed price with no breakdown of the visit, calculations, drawings and VAT [1] [2].
Asks for full payment before the signed calculations are delivered and the completion certificate is issued [5].
Dismisses visible cracking or bowing as just settlement without measuring, monitoring or putting the assessment in writing [2].
The bottom line
For most people, start with Design 4 Structures: one consultancy for design plus construction-level detail, chartered engineers on the team and a long company record, all reachable through its Telford office. Its site publishes no prices, so ask for a fixed written fee and proof of insurance alongside your enquiry.
Match the firm to the job where the brief is narrower: Freyssinet for structural repair and strengthening, Structural Design Service for local beam calculations, Engineering Solutions for small workshop-style work, and Lewis Howdle where a long-standing Wellington practice matters most. Then get two or three itemised quotes on the same written scope, and hold back final payment until building control signs the work off.
Corrections and business responses
Tell us what needs checking, or ask to claim a listing and reply to an assessment.