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Structural Engineers in Gloucestershire

Residential structural engineering that doesn't leave you guessing

Structural calculations for projects across Gloucestershire. Get a free quote from PorthouseDean for your structural calculations now.

90
Projects across Gloucestershire
100%
BC approval record
4.6 ★
Google rating

We know Gloucestershire's housing stock and what Gloucestershire County Council expects

Offices in Manchester, London and Gloucester, with engineers around the country for site visits. We've worked extensively across Gloucestershire — the Roman → modern Cotswold stone cottages, Georgian terraces, modern developments, the party wall situations that come with them.

More importantly, we know how Gloucestershire County 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 Gloucestershire and surrounding areas
Familiar with Oolitic limestone, Lias Clay, alluvial soils ground conditions and what that means for your foundations
Experience with Roman → modern properties and the structural challenges they present
Working near Cotswolds AONB; Forest of Dean; River Severn; Berkeley Castle 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 Gloucestershire. With 90 calculations completed across Gloucestershire, our engineers understand the area's Roman → modern Cotswold stone cottages, Georgian terraces, modern developments properties, ensuring every design accounts for local building characteristics and Oolitic limestone, Lias Clay, alluvial soils ground conditions. Our most recent project in the area was a other completed in Jan 2026.

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 90 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.

90
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 Gloucestershire

Example of a single storey extension — the type of work we carry out in Gloucestershire

Single storey extension

GL20GLSep 2024
Example of a single storey extension — the type of work we carry out in Gloucestershire

Single storey extension

GL51GLSep 2024
Example of a other — the type of work we carry out in Gloucestershire

Other

GL50GLSep 2024
Example of a two-storey extension — the type of work we carry out in Gloucestershire

Two-storey extension

SlimbridgeGLSep 2023
Example of a single storey extension — the type of work we carry out in Gloucestershire

Single storey extension

GL11GLSep 2023

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 Gloucestershire County 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 90 projects across Gloucestershire, structural calculations typically start from £500 + VAT depending on complexity.

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 Gloucestershire's unique characteristics helps us deliver precise structural solutions.

Population
650k
Building Era
Roman → modern
Soil Conditions
Oolitic limestone, Lias Clay, alluvial soils
Local Authority
Gloucestershire County Council
Housing Stock
Rural villages; market towns; spa towns
Transport Links
M5; Great Western Main Line; Severn crossing
Engineering Note: Cotswold limestone (oolitic); Lias formations; Old Red Sandstone

About Our Gloucestershire Structural Engineering Services

Why Choose Our Gloucestershire Structural Engineers?

Our team brings deep local knowledge to every project. We understand Gloucestershire’s unique building heritage – from Roman → modern properties with their characteristic Cotswold stone cottages, Georgian terraces, modern developments construction. This expertise matters when calculating loads, designing foundations, and ensuring your project meets Gloucestershire County Council building regulations.

Understanding Gloucestershire’s Ground Conditions

Foundation design in Gloucestershire requires careful attention to local geology. The area’s Oolitic limestone, Lias Clay, alluvial soils demands specific engineering approaches. Cotswold limestone (oolitic); Lias formations; Old Red Sandstone We factor these ground conditions into every design, whether you’re planning an extension, loft conversion, or structural modification.

Comprehensive Knowledge of Gloucestershire Properties

Gloucestershire’s housing includes Rural villages; market towns; spa towns, and we’ve worked across this entire spectrum. Your project might be close to Cotswolds AONB; Forest of Dean; River Severn; Berkeley Castle or positioned for excellent transport links via M5; Great Western Main Line; Severn crossing – either way, we know the area.

Years of working with Gloucestershire County Council building control means we understand exactly what they need. Our calculations consistently pass first-time review, keeping your project on schedule.

Structural Engineering Services Throughout Gloucestershire

We provide comprehensive structural calculations across Gloucestershire (population: 650k), 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

Get Started With Your Gloucestershire Structural Calculations

Planning your extension or conversion? Reach out to PorthouseDean for structural calculation costs in Gloucestershire. You’ll receive our transparent, fixed-price quote within 24 hours.

Ready to get started?

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