PorthouseDean

Structural Engineers in Lincolnshire

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 Lincolnshire's housing stock and what Lincolnshire County Council expects

Reliable structural calculations across Lincolnshire for residential projects.

Based in Manchester, with engineers around the country for site visits. We've worked extensively across Lincolnshire — the Medieval → modern Brick semis, stone cottages, the party wall situations that come with them.

More importantly, we know how Lincolnshire 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 Lincolnshire and surrounding areas
◆ Familiar with Fen peat & chalk ground conditions and what that means for your foundations
◆ Experience with Medieval → modern properties and the structural challenges they present
◆ Working near Lincoln Cathedral; Stamford Town and the surrounding neighbourhood
◆ Site visits arranged locally when your project needs one

PorthouseDean provides structural engineering services in Structural Engineers in Lincolnshire, 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.

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 Lincolnshire. 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 Lincolnshire's Medieval - modern properties. Our engineers aim to understand the specific requirements of your property from Brick semis, stone cottages construction, ensuring calculations that respect the original structure while meeting modern standards.

Lincolnshire typically has Fen peat & chalk. Peat over chalk. We factor these conditions into our foundation designs, which may affect the depth and type of foundations required.

On a full plans application, the 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.

We provide structural calculations throughout Lincolnshire and the surrounding Lincolnshire area. Our engineers regularly work on projects across the region, and you choose the delivery date that suits you.

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

Population
770 k
Building Era
Medieval → modern
Soil Conditions
Fen peat & chalk
Local Authority
Lincolnshire County Council
Housing Stock
Rural villages; market-town terraces
Transport Links
East Coast Main Line; A1
Engineering Note: Peat over chalk

Structural engineering services in Lincolnshire

Why Choose Our Structural Engineers?

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

Understanding Lincolnshire’s Ground Conditions

Foundation design in Lincolnshire requires careful attention to local geology. The area’s Fen peat & chalk demands specific engineering approaches. Peat over chalk We factor these ground conditions into every design, whether you’re planning an extension, loft conversion, or structural modification.

Comprehensive Knowledge of Lincolnshire Properties

Lincolnshire’s housing includes Rural villages; market-town terraces, and we’ve worked across this entire spectrum. Your project might be close to Lincoln Cathedral; Stamford Town or positioned for excellent transport links via East Coast Main Line; A1 – either way, we know the area.

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

Coverage Across Lincolnshire

Operating throughout Lincolnshire and surrounding areas (population: 770 k), our services include:

• Loft conversion and roof extension calculations
• Extension designs – all configurations
• Internal structural alterations
• Steel beam and RSJ specifications
• Foundation and underpinning calculations

Get Started With Your Lincolnshire Structural Calculations

Planning your extension or conversion? Reach out to PorthouseDean for structural calculation costs in Lincolnshire. You’ll have a clear, fixed-price quote before you commit.

Ready to get started?

Send us your plans and you'll have a clear, fixed price before you commit. Or give us a call.