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Structural Engineers in East Devon

Residential structural engineering that doesn't leave you guessing

A clear price. A delivery date you choose. Every step, in one place.

Tell us about your project
★ Trustpilot Excellent90+ reviews 9,000+ projects since 2012

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

RSJ and wall support for projects in East Devon.

Based in Manchester, 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, and has delivered 9,000+ projects across England and Wales since 2012.

Structural engineering is the core of it. It isn’t where we stop.

The calculations and drawings are ours. So are the things around them that usually land on you: a date you can plan around, one place where everyone sees the same documents, and the change of mind nobody priced for. More than 9,000 projects since 2012 have run through the same process, from a single wall removal to a whole new build.

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.

One document for building control, one for your builder

Building control gets the calculations. Your builder gets the contractor pack. If either of them has a question about the structure, it comes to us, not to you. How we check and what the process looks like.

9,000+projects since 2012
1free change request on every job

Fixed fee. No surprises after you've committed.

No extras for building control queries.

100% building control approval
Our calculations are approved by building control. If yours aren’t, you get a refund.
Full structural calculations
Detailed enough for your builder to work from without calling anyone. Delivered on the date you choose.
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.

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 us your plans

A fixed price before you commit. 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

It depends on the size and complexity of your project, so we don't publish a price range for East Devon. Tell us about your project and you get a clear, fixed-fee quote before you commit.

Sure, we have worked on a wide variety of East Devon's Regency - Modern properties. Our engineers aim to understand the specific requirements of your property from Seaside villas, cob and thatch cottages, modern housing construction, ensuring calculations that respect the original structure while meeting modern standards.

East Devon typically has Red mudstone and sandstone soils, some clay. Triassic mudstones ('red beds') & Upper Greensand. We factor these conditions into our foundation designs, which may affect the depth and type of foundations required.

On a full plans application, East Devon District Council has five weeks to decide, or longer if you both agree it in writing (regulation 14A of the Building Regulations 2010). On a building notice there is no plans decision: building control checks the work, and our calculations, as it goes. If they raise a question about the structure, your engineer answers it.

The red mudstones and sandstones generally provide good bearing for foundations. However, some layers can be softer or more weathered, so we assess the specific site conditions to determine the appropriate foundation depth and size.

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.

On the date you choose when you book. The price follows the date: pick a later one and it costs less, or an earlier one if you need them sooner.

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. The moments that cost you come later: when building control query something, or your builder can't follow the drawings. That's why BC queries, an amendment and a virtual site visit are included — it'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

Structural engineering services in East Devon

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 fewer queries 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 worked on 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 and you'll have a clear, fixed price before you commit. Or give us a call.

PorthouseDean