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Structural Design Calculations and drawings for every scale of project.

WHAT WE DO
RESIDENTIAL
House extensions & alterationsStructural design calculations and drawings for multi-storey, rear & wrap-around extensions.
Loft Conversions & alterationsStructural design calculations & drawings for a full rear dormer, rhip-to-gable & mansards .
RESIDENTIAL
RESIDENTIAL
New-build residentialSteel beam, roof lantern trimmers, vaulted roof, stairwell trimmers, & foundation design calculations.
COMMERCIAL
Portal steel-frame buildingsFull structural design for new-build industrial units, agricultural buildings & logistics warehouses.

From the email inquiry to the final structural design calculations and drawings

HOW IT WORKS
COMMERCIAL
Building conversion to residentialFull structural design calculations and drawings for steel frame, beams, and stairwell trimmers.
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Free consultationEmail us your design inquiry, including the project address & drawings. We'll confirm the scope of works & structural design fees.
Site visitWe visit to take measurements, assess the existing structure, and identify any ground investigation requirements.
Design calculations & drawings We produce structural calculations, specification and construction drawings for Building Control submission.
Construction supportWe're available throughout the build - answering Contractor queries, & signing Building Control documents.
Design completion Structural design calculations & drawings will be issued upon receipt of payment.
Projects We Cater To
Our expertise covers residential, extensions, loft conversions, and more.
Residential Projects

Extensive Experience

Read more
Client-Centric Approach
John Doe
Tailored Engineering Solutions
With years of experience in structural engineering, our expert team delivers comprehensive solutions for both residential and industrial projects. We ensure compliance with all regulatory standards while focusing on cost-effective designs that meet client specifications.
Jane Smith
Why Choose Us?
Our commitment to quality and attention to detail sets us apart. Whether it's a loft conversion, vaulted roof or a new industrial build, we tailor our services to fit the specific needs of each client, ensuring a smooth project workflow and optimal results.
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Industrial Structures
We pride ourselves on our collaborative approach, working closely with clients and contractors to achieve the best possible outcomes. Our focus on communication and transparency throughout the project phase fosters a proactive environment, leading to successful project delivery.
Get in Touch

Free Consultation

enquiries@gjstructural-engineers.co.uk

54 Mazurek Way, Swindon, SN25 1AR
Mon-Fri 9 am - 5 pm
enquiries@gjstructural-engineers.co.uk
01793316402
© Copyright 2026 G&J Structural Engineers, Ltd. All rights reserved. All registered trademarks herein are the property of their respective owners.
G&J Structural Engineers Ltd
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