A personal note, before anything else.

I'm Effiom.
I do structural
engineering.

"Whoever you are — homeowner, architect or builder — when you come to me with a project, you have my full attention. Not a junior. Not a template. Me."

Effiom Esua · Director, ARX Engineers Ltd

Tell me about your project →

I set up ARX because I believe every client deserves to feel like the most important client. Not just the big jobs. Not just the architects with ten projects a year. Everyone.

— Why ARX exists
8+
Years of structural engineering Residential and commercial projects across England since 2017
01
Person on every single project That person is me. BEng MSc. No delegation, no surprises.
∞
The same standard, every time A £500 loft beam gets the same care as a £4,000 complex build.
You Will Be Looked After· Your Project Will Be Done Right· Your Engineer Will Be Reachable· Loft Conversions· Extensions· Beam Design· New Builds· Internal Alterations· Building Regulations· Aim For Excellence· You Will Be Looked After· Your Project Will Be Done Right· Your Engineer Will Be Reachable· Loft Conversions· Extensions· Beam Design· New Builds· Internal Alterations· Building Regulations· Aim For Excellence·

From the director

A word from Effiom

I want to be honest with you about why I started this practice.

I've spent eight years in structural engineering and I've seen what the industry often gets wrong: clients treated as transactions, homeowners left confused by jargon, architects chasing engineers who don't return calls. I built ARX to be different from all of that.

When you work with me, I answer my phone. I explain things in plain English. If something is going to be a problem, I tell you early — not after the fact. If your vision isn't structurally possible the way you've imagined it, I don't just say no — I find you a way forward.

That's not a sales pitch. It's just how I think engineering should work. Every client — the homeowner removing a wall for the first time, the architect on their tenth project with me — gets the same thing: my full attention and my genuine best.

That's the promise. I keep it.

Effiom Esua BEng MSc · Director, ARX Engineers Ltd · Bristol

How I work with every client.

Not aspirations. Actual commitments.

I.
I anticipate, I don't just react.
You shouldn't need to know the right questions to ask a structural engineer. I ask them for you. Problems that I can see coming get flagged early — not after they've cost you time or money.
II.
I speak plainly, always.
No mystification. No jargon to make the work seem more complicated than it is. I explain what I'm designing, why it matters, and what it means for your build — in language that makes sense.
III.
I'm reachable. Genuinely.
Every enquiry gets a response the same day. Every question gets a proper answer. I know your project matters to you — that means it matters to me too. That's not a policy. It's just basic respect.
IV.
No is never just no.
If something can't be done the way you've imagined it, I tell you why — and then I find an alternative. There's always a way forward. My job is to find it with you, not to hand it back unsolved.

What I
design

Structural engineering for homes and buildings across Bristol and the South West.

01
Loft Conversions
Hip-to-gable, dormer, mansard. Ridge beams, floor joists, staircase trimmers, masonry stability — the full structural package for Building Control.
02
Extensions
Single and two-storey rear extensions. Flat roof joists, opening beams, foundations, full stability design. Bi-fold and large sliding door frames too.
03
Internal Alterations
Wall removals, steel frames, lintel design, masonry bearings. I make open-plan possible — safely, with drawings your builder can actually follow.
04
New Builds
Additional storeys, outbuildings, full new-build structural packages. Every project led by me, from concept to Building Control submission.
05
Garage Conversions
Structural design for garage-to-habitable conversions. New openings, roof loads, foundation checks — everything Building Control needs.
06
Building Regulations Packages
Full calculation packages for Building Control. Structural drawings, key details and specifications — clear, compliant, and ready to submit.

How it works

Simple. Honest. No surprises.

From first message to finished drawings — here's what to expect.

1
You get in touch
A few details about your project is enough to start. I'll come back to you the same day, without fail.
2
I send a clear proposal
A detailed scope and a fixed fee. No hourly ambiguity. No hidden extras. You know exactly what you're getting before you commit.
3
I get to work
I keep you informed throughout. If anything changes or I spot something, I tell you immediately — not after the fact.
4
You get the package
Full Building Regulations calculations and drawings issued in PDF. Clear enough for your builder. Thorough enough for Building Control.

Get in touch

Tell me about
your project.

"It doesn't matter where you are in the process. Early stages, drawings ready, or somewhere in between — just reach out. I'll help you figure out the next step."