Home extensions
Rear, side-return, wrap-around and double-storey extensions designed around your property.
Explore services →Local construction services
Builders in Caterham
SEM Group provides complete building services in Caterham, including extensions, loft conversions, renovations, new builds, kitchens and bathrooms.
Building in your area
Designed carefully. Managed clearly. Built properly.
SEM Group delivers residential building and renovation projects throughout Caterham. Whether you are planning an extension, converting the loft or modernising the whole property, we can manage the project from early design to completion.
Our Caterham service can include architectural drawings, planning support, structural calculations, Party Wall assistance, Building Control coordination, construction and final finishing—all managed through one experienced team.
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
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