For 40 years, Gyoury Self has been engineering high-quality new builds, property conversions and ‘change of use’ projects locally and across the UK.

Our local clients range from first-time home owners to property managers, developers and building contractors. Most have come to us through recommendation and many are return customers.

We have gained a reputation for delivering cost-effective engineering services and have the skills and experience to correctly prepare your project for the planning process.

We offer a full range of structural and civil engineering services, including:

  • Structural Drawings and Calculations
  • Structural Inspections and Surveys
  • Defect Analysis
  • Structural Reporting

Some of the projects we undertake for local homeowners and property developers.

  • Property Extensions
  • Loft/Basement Conversions
  • Pre-Fabricated Extensions
  • Period/Modern Property Upgrades
  • Commercial to Residential
  • Residential to HMO 
  • Industrial Re-modelling
Photo of property renovations

A selection of the domestic improvement projects we have professionally engineered for modern and period residential properties across the South East. These include loft conversions, property extensions, ‘knock through’ open plan re-modelling and prefabricated modular loft extensions.

We have a 100% Success Rate for Buildings Regulations Approvals!

Further Information

Our information leaflet contains all you need to know about our structural and civil engineering services  for domestic and commercial property projects.

The booklet contains details about our company as a trusted provider of engineering services, as well as a comprehensive list of our most Frequently Asked Questions relating to property conversions and home improvements.

If you require any further information, please do not hesitate to contact us with your enquiry. A member of our engineering team will be happy to help,

Click to download brochure

LABC Local Council Planning Information

Local Authorities in the SouthEast are now issuing a free Renovating Your Home booklet to guide local residents through the design and planning process for property refurbishments, including extensions and conversions.

The comprehensive guide covers all aspects of your project design and viability with information about Planning, Building Control and Environmental Health, legislation, converting different rooms or adding extensions, as well as advice on how to appoint the right professionals.

The guide will be automatically issued when you make an enquiry regarding property conversion and home improvements via your Local Authority Building Control (LABC) or Planning Departments. It can also be downloaded from local council planning pages. Or you can simply download the guides in PDF format here:

As a trusted local service provider, you will find our structural and civil engineering services featured in both guides.

Logos for LABC and Sussex Councils

You can also find us on the Building Control information portal as an approved local engineering services provider. We are promoted in the My Tradesman Local Authority listings throughout East Sussex and West Sussex; including Adur, Arun, Brighton & Hove, Eastbourne, Chichester, Crawley, Hastings, Horsham, Lewes, Mid Sussex, Rother, Wealden and Worthing.

Client Testimonials

Really good service from Gyoury Self. I was really unsure about the details but Rick and the team took the time to explain it all to me in a clear way.

Emily Garcia
Emily Garcia

Amazingly quick turn around from visit to calculations being completed. Very friendly and professional! Highly recommended.

Katie Manaton
Katie Manaton

When showing the plans to building control they commented on how thorough the final report was and said they had always seen very good work from Gyoury Self and never heard criticism.


Complete professionalism and kindness from the first phone call. We will be using this company from now on and will be recommending them to anyone in need of the services they offer.

Willow Boyes
Willow Boyes

Very happy with the service we received. Prompt, efficient and a competitive price.

Nic Eadie
Nic Eadie

I've used Gyoury Self several times over the past few years and found them to be extremely helpful, pro-active and prompt .. sensibly priced as well!

Andy Young
Andy Young

Excellent Service, Professional and Friendly Staff.


Really great company - phoned for a bit of advice before instructing which was very helpful. I would absolutely recommend and will use again.

Sarah Bennett
Sarah Bennett

We would definitely recommend this company to others and definitely use them again without any hesitation.

John Grant Tzilalis-Walker
John Grant Tzilalis-Walker

Are you ready to start your property project?

We hope you have found all the information you need on our website, but please feel free to contact us if you have any queries.

We are always happy to provide an estimate for proposed projects – just give us a call on 01273 414413 to discuss the details with one of our engineers. If you already have architects drawings, you can email them over to get a precise project estimate.