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Structural Engineers in East Devon

Residential structural engineering that doesn't leave you guessing

RSJ and wall support for projects in East Devon. Start your project the right way – get expert calculations from PorthouseDean

9,000+
Projects across England
100%
BC approval record
4.6 ★
Google rating

We know East Devon's housing stock and what East Devon District Council expects

Offices in Manchester, London and Gloucester, with engineers around the country for site visits. We've worked extensively across Devon and know East Devon well — the Regency → Modern Seaside villas, cob and thatch cottages, modern housing, the party wall situations that come with them.

More importantly, we know how East Devon District Council’s building control team operates and we write our calculations to match. That saves time on site and avoids queries coming back.

Local knowledge

Projects completed across East Devon and surrounding areas
Familiar with Red mudstone and sandstone soils, some clay ground conditions and what that means for your foundations
Experience with Regency → Modern properties and the structural challenges they present
Working near Jurassic Coast World Heritage Site, Sidmouth, Exmouth and the surrounding neighbourhood
Site visits arranged locally when your project needs one

PorthouseDean provides structural engineering for extensions, knock-throughs, loft conversions, and two-storey extensions in East Devon. With 9,000+ calculations completed across England, we bring proven expertise to every project.

Houses are all we do. That specialism matters when something goes awkward.

We don't do commercial. We don't do bridges. We do extensions, loft conversions, knockthroughs, new builds — and we've done over 9,000+ of them with a 100% building control success record.

That specialism means when your project throws up something unexpected — and they always do — we've seen it before. We know what works, what building control will push back on, and what your builder actually needs on the page to build from.

9,000+
Residential projects
100%
BC approval rate
4.6 ★
Google reviews

The quote's the easy part. It's three weeks later that matters.

The difference between structural engineers doesn't show up in a quote. It shows up when your builder's on site and something doesn't add up. When building control come back with a query. When the design changes halfway through and someone needs new calcs yesterday.

Our calculations are detailed enough that your builder can work from them without ringing anyone. When BC come back with a query, we deal with it — as many as they want. If they want something changed, we change it.

Project changes? Every quote includes a free amendment because we know designs evolve. Need to speak to your engineer? We give you a direct booking link for meetings, and our tech support team handles urgent queries whenever you need them.

A builder standing around waiting for a structural answer costs real money. We're the engineers who pick up the phone.

Fixed fee. No surprises after you've committed.

The number we quote is the number you pay. No extras bolted on for BC queries, no awkward invoice three months later.

Full structural calculations
Detailed enough for your builder to work from without calling anyone. Standard delivery in 10 working days — or as little as 1.
Unlimited BC queries
Building control come back with questions — we deal with every one. If they want changes, we make them.
One free amendment
Projects change — we know that. One design amendment included in every quote as standard.
Virtual site visit
A face-to-face video call with your engineer to talk through specific design requirements. Included in your quote.
Direct engineer access
A booking link to schedule meetings with your engineer directly, plus tech support for urgent queries.
Quote within 24 hours
Often much quicker. A fixed fee so you can plan your budget or quote your own client with confidence.

Recent Projects Near East Devon

Example of a bespoke / specific calcs — the type of work we carry out in East Devon

Bespoke / specific calcs

EX19EXSep 2025
Example of a two-storey extension — the type of work we carry out in East Devon

Two-storey extension

EX17EXOct 2019
Example of a two-storey extension — the type of work we carry out in East Devon

Two-storey extension

EX54EEXNov 2020
Example of a loft conversion — the type of work we carry out in East Devon

Loft conversion

EX38EXMay 2022
Example of a new-build — the type of work we carry out in East Devon

New-build

EX12EXMay 2021

Send plans. Get a quote. We handle the rest.

1
Send us your plans
Drawings, sketches, whatever you've got. We'll take it from there.
2
Fixed fee quote within 24 hours
Often much quicker. A clear number so you can plan your budget or quote your own client with confidence.
3
Virtual site visit with your engineer
Put a face to the name, talk through the specifics. Included in your quote — no physical visit needed to get started.
4
Calculations in 10 working days (or as little as 1)
Signed off and ready for East Devon District Council. Detailed enough to build from.
5
We deal with building control
However many queries they come back with, we handle them. If they want something changed, we change it.

Send us your plans

Fixed fee quote within 24 hours. No obligation, no chasing.

What people say

★★★★★
I've used PorthouseDean engineers for many of our clients and my personal project. I find their pricing fair to reflect the quality work that has been produced. Definitely recommend.
— Clinton Johnson · Trustpilot
★★★★★
I was referred to them by the building control designers. I found them responsive and helpful. The engineering came through quickly for building control and as I needed them to get contractors quotes. Fair and reasonable price for the excellent service.
— Oasis · Trustpilot
★★★★★
The internal structural walls changed at least 3 times and the engineer assigned to me was very accommodating with the changes. I liked the fact that the work they do is peer-checked. Would not hesitate to use them again.
— Phil Neo · Trustpilot

Frequently Asked

If you're removing a wall, converting a loft, building an extension, or doing anything that affects the structure of your house — yes. Building control will require structural calculations before they sign off the work.

A virtual site visit is included in every quote — it's a chance to put a face to the name and talk through specific design requirements with your engineer. But we don't believe a physical visit is necessary for most residential projects. Working remotely allows us to be more economical while maintaining the same quality throughout. If your project does need a physical visit, we have engineers around the country who can arrange one.

Quote within 24 hours of receiving your plans — often much quicker. Standard delivery is 10 working days, but we can turn calculations around in as little as 1 working day if you need them urgently.

Based on our 9,000+ projects across England, structural calculations typically start from £500 + VAT depending on the complexity of the project.

Fees depend on the scope and complexity of your project. We provide clear, fixed-fee quotes within 24 hours so you know exactly what you'll pay before we start. No hidden costs, no extras for building control queries.

Every quote includes one free amendment because we know projects change — that's normal. Beyond that, we'll quote any further changes clearly so there are no surprises.

The quote's not the product — the project is. A cheaper set of calculations might get you through the door, but when building control query something or your builder can't follow the drawings, that's when it costs you. We include BC queries, an amendment, and a virtual site visit because that's where projects actually succeed or fail.

Local Area Information

Understanding East Devon's unique characteristics helps us deliver precise structural solutions.

Population
151k
Building Era
Regency → Modern
Soil Conditions
Red mudstone and sandstone soils, some clay
Local Authority
East Devon District Council
Housing Stock
Mix of coastal retirement properties, rural villages, and market towns
Transport Links
M5 motorway, A30, Avocet Line railway
Engineering Note: Triassic mudstones ('red beds') & Upper Greensand

About Our East Devon Structural Engineering Services

Professional Structural Calculations for Devon Properties

Your project deserves engineers who know Devon inside and out. We work extensively with the area’s building heritage – Regency → Modern constructions using Seaside villas, cob and thatch cottages, modern housing. Our familiarity with East Devon District Council processes means faster approvals and fewer complications for your project.

Structural Calculations Tailored to Devon Properties

Every area has its challenges. In Devon, we regularly work with Red mudstone and sandstone soils, some clay, which requires specific foundation design approaches. Triassic mudstones (‘red beds’) & Upper Greensand Our structural engineers account for these local conditions in every calculation, ensuring your extension, loft conversion, or structural alteration is built on solid foundations.

Experience Across Devon’s Property Types

From Mix of coastal retirement properties, rural villages, and market towns, we’ve handled projects throughout Devon. Whether your property sits near Jurassic Coast World Heritage Site, Sidmouth, Exmouth or benefits from proximity to M5 motorway, A30, Avocet Line railway, we understand the local context.

Our established relationship with East Devon District Council building control helps expedite your project. We consistently deliver calculations that meet their standards, minimising delays and resubmissions.

Structural Engineering Services Throughout Devon

We provide comprehensive structural calculations across Devon (population: 151k), covering:

• Loft conversions and dormer additions
• Rear extensions – single and double storey
• Side and wrap-around extensions
• Load-bearing wall removal calculations
• Foundation designs and underpinning assessments

Structural Calculations Quote for Your Devon Project

Ready to move forward? Contact PorthouseDean for structural engineering services in Devon. We provide clear, competitive quotes within one business day.

Ready to get started?

Send us your plans for a fixed-fee quote within 24 hours. Or call us — we actually answer.