Structural Engineering for Extensions

Structural Engineering for Extensions

Structural Calculations For Extensions

PorthouseDean is on hand to help revamp, re-energise, and revitalise any property. When it comes to adding an extension, there are a number of factors that must be considered before work can get underway. From advice regarding ideal window location and load bearing walls, to difficulties that could arise from extensions to a property — a PorthouseDean structural engineer can advise on creating the most efficient, sleek, and safe structure possible. We are here to ensure that your project is able to go forward stress-free. 

House Extension Structural Engineer Drawings & Calculations

Your project’s dedicated coordinator will work closely with architects and any other design professionals employed on the extension. They will aim to work together to help create a design that is aesthetically pleasing while ultimately being structurally sound.

When brought onto a project, a PorthouseDean structural engineer will bring expertise as well as a unique perspective on a number of factors. Key benefits include: 

  • Impact Assessment: An engineer will consider what impact, if any, an extension may have — will it cause any cracking to walls due to beam deflection, improper construction techniques, inadequate foundation sizing and settlement, etc. 
  • Implications of Design: Your project coordinator will pay particular attention to considering how an extension’s size and shape could affect design calculations, as well as if it will cause complications and additional costs. 
  • Quality Work: An independently audited ISO 9001:2015 quality management system ensures that any work we do is of the highest possible standard. 
  • Speed of Service: We provide you with a response from an initial enquiry within one working day, and quotes in two. We also offer a priority service for when you need your information ‘yesterday’.

Latest Projects

Browse a selection of extension projects we have worked on for clients around the country. 

Extension Structural Engineering Calculations Done The Right Way

The PorthouseDean team of residential structural engineers have a keen eye for detail, and know exactly what it takes to deliver an extension project. 

So whether you need support with a rear/side extension, or with adding a garage or outbuilding to a pre-existing property, you’re in the right place. 

We have built our core structural engineering for extensions service from the ground up to provide you with everything you could need: from detailed drawings and accurate calculations, to an engaged customer service that aims to keep you in the loop at all times. We’re here to help.

Our end goal on any house extension project will be to produce designs that both meet the requirements of our clients, while also ensuring that everything complies with relevant building regulations and codes of practice. 

Why PorthouseDean is Right For You

Any additions to a home/property is highly likely to impact a properties structural integrity. If this is the case, then not only finding a structural engineer, but the right structural engineer, is key. Our phone lines are open 9am-5pm, and our independently audited ISO 9001:2015 quality management systems ensures that is of the highest standard.  


Cutting past the complicated to devise a simple, effective solution to complex situations is where our team thrives. 


Cutting past the complicated to devise a simple, effective solution to complex situations is where our team thrives. 


Cutting past the complicated to devise a simple, effective solution to complex situations is where our team thrives. 

Our Other Services

Find out more about the expert service offered by our team of structural engineers. Whatever your need, we are here to help.

New Build Projects

Loft Conversion Projects

Basement Projects

Renovation Projects

Our Architectural Partners