top of page

Extensions, Loft Conversions & Internal Alterations

Established in 1974, GC Robertson delivers trusted structural and civil engineering solutions across Suffolk, Norfolk, and Essex.

Black and White Old Movie Silent Film Cinema Projector Video (3).png

Why Homeowners & Contractors Choose GC Robertson

  • Experience across all property types, including heritage and listed buildings

  • Tailored structural solutions that respect both modern and traditional construction

  • Builder-friendly drawings and calculations to minimise errors on site

  • Local knowledge of building styles across Suffolk, Norfolk, Essex & Cambridgeshire

  • Support with building regulations approval for a smoother project

Our Internal Alteration Services Include:

  • Load-bearing wall removals - calculations for steel beams, lintels, and supports

  • Open-plan conversions - safe designs for creating larger living or working spaces

  • Floor and stair alterations - structural support for new layouts and levels

  • Heritage and listed properties - sympathetic designs that preserve character and comply with regulations

  • Builder-ready drawings - clear calculations and plans to minimise on-site issues

Register your project with our team

Our structural and civil engineering team provides tailored solutions for residential, commercial,

and industrial developments across East Anglia.

  • It’s best to involve GC Robertson at the start of your project. Early input helps identify structural solutions, avoid costly design changes, and ensure your plans meet Building Regulations.

  • Yes, extensions require structural design and calculations for approval. GC Robertson provides the drawings and reports needed to make your extension safe, compliant, and buildable.

  • Loft conversions almost always require structural input. We design the beams, floors, and supports to ensure your new living space is structurally sound and meets regulations.

  • No, it’s unsafe to remove a load-bearing wall without professional design. GC Robertson specifies the correct beams and supports so alterations can be carried out safely and approved by Building Control.

  • A structural survey is a detailed inspection of a property’s structure. GC Robertson provides clear reports on issues such as cracks, movement, or subsidence, along with practical recommendations.

  • Many projects fall under Permitted Development and don’t need planning permission. However, Building Regulations approval is always required, and GC Robertson supplies the calculations and drawings for compliance.

  • Often both are needed. Your architect creates the design, while GC Robertson ensures the structure can be built safely and cost-effectively.

  • Yes. Our engineers design foundations suited to your site conditions, ensuring your extension is stable, compliant, and built to last.

  • GC Robertson provides detailed structural drawings and calculations. These documents are used for Building Control approval and guide your contractor during construction.

  • Early involvement allows us to test feasibility and identify cost-effective solutions. This means smoother approvals, fewer delays, and designs that are practical from the start.

FAQs on Working With GC Robertson

Quick answers on our structural surveys, designs, and services.

Black and White Old Movie Silent Film Cinema Projector Video (1).png

Structural and Civil Engineers for Planning, Design and Compliance in East Anglia

Since 1974, GC Robertson has delivered structural and civil engineering solutions across Suffolk, Norfolk, and Essex.

 

From structural surveys and bespoke design to foundations and alterations, our team provides practical, buildable solutions that support residential, commercial, and industrial projects across East Anglia.

Register your Project

Call 01394 384 887, email enquiries@gcrobertson.co.uk or fill in the form below.

Service

Structural Engineering for Extensions, Loft Conversions & Alterations in East Anglia

Expanding or reconfiguring your home requires careful structural planning. GCR provides clear, reliable designs for extensions, loft conversions, and internal alterations across Suffolk, Norfolk, Essex, and Cambridgeshire.

​

Whether you’re adding space with an extension, converting a loft, opening up a kitchen, or removing a load-bearing wall, our engineers ensure every change is safe, compliant, and tailored to your needs.

​

With experience across all property types – from modern estates to listed and heritage buildings – we deliver designs that respect the original structure while giving you the flexibility to create new spaces.

Our Extension & Loft Conversion Services Include:

  • Single and double-storey extensions - structural design for rear, side, and wrap-around builds

  • Loft conversions - safe solutions for dormers, roof lifts, and attic rooms

  • Load-bearing wall removals - calculations for steel beams, lintels, and new openings

  • Foundation checks and design - confirming your home can safely take the extra load

  • Integration with existing structures - designs that connect new and old securely and sympathetically

bottom of page