Home extensions
Rear, side-return, wrap-around and double-storey extensions designed around your property.
Explore services →Local construction services
Builders in Redhill & Caterham
SEM Group serves Redhill and Caterham with extensions, renovations, loft conversions, kitchens, bathrooms, new builds and complete project delivery.
Building in your area
Designed carefully. Managed clearly. Built properly.
SEM Group delivers residential building and renovation projects across Redhill and Caterham. From a first feasibility discussion to structural work and final decoration, our team can coordinate the complete programme.
We help customers make informed choices before work starts, then maintain clear communication while construction is underway. Our service can include drawings, calculations, approvals, procurement, trade coordination and finishing.
Arrange a consultation →Services available
Complete support for your project.
Choose an individual building service or ask SEM Group to coordinate the complete design-and-build journey.
Loft conversions
Dormer, rooflight and hip-to-gable conversions with structural and staircase coordination.
Explore services →Renovations
Complete refurbishments, structural alterations and interior transformations.
Explore services →Kitchens & bathrooms
Design, supply and professional fitting with all associated building services.
Explore services →New builds
Managed construction from pre-start planning through to completion and handover.
Explore services →Design & technical
Architectural drawings, planning, structural calculations, Party Wall support and Building Control.
Explore services →Locations covered by this team
Redhill · Caterham
Planning a project in one of these locations? Tell us about the property, the work you have in mind and your preferred timescale. We will help you understand the most practical next step.
Discuss your project →Have a project in mind?
Let’s build something
exceptional.
Tell us about your property and plans. We’ll arrange a complimentary, no-obligation consultation.
Start your project →Or email info@semgroup.uk