Whole-home transformation
Construction across London & Surrey
Better spaces
Built around you.
Extensions, renovations and complete construction services—thoughtfully planned, expertly managed and beautifully finished.
17+Years of
experience
experience
140+Projects
completed
completed
A–ZComplete project
delivery
delivery
100%Fully insured
company
company
Complete design & build
One team, from your first idea to the finished space.
SEM Group can manage your entire project, including architectural drawings, planning applications, Building Regulations drawings, structural calculations and Party Wall Agreement support.
With design, technical coordination, Building Control and construction connected through one experienced team, your project stays clearer and easier to manage.
Explore our complete service →What we do
One team.
Every stage.
Residential and commercial construction, delivered with the same care we would expect in our own property.
01
Home extensions
More space, carefully integrated with the way your home already works.
Discover more →02Loft conversions
Well-planned new rooms that turn unused roof space into real value.
Discover more →03Full renovations
Complete transformations managed from strip-out through to final finish.
Discover more →04Kitchens & interiors
Refined, practical spaces delivered with close attention to every detail.
Discover more →Selected work
Made to live
beautifully.
Interior renovation
Kitchen & living space
South LondonSpace creation
Loft conversion
LondonSelected SEM Group work and representative design imagery.
A calmer way to build
Clear from day one.
Good construction starts with good communication. Our straightforward process keeps you informed and your project moving.
Consult
We visit, listen and understand your property, priorities and budget.
Plan
We coordinate the design, structural details, programme and clear proposal.
Build
One experienced team manages the work, communication and quality on site.
Complete
We inspect, finish and hand over a home ready for you to enjoy.
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