Side-return, rear and double-storey extensions that add space without the upheaval of moving.
Loft Conversions
Dormer, Mansard and roof-light conversions that turn unused roof space into usable rooms.
Commercial Builds
Fit-outs, refurbishments and alterations for offices, retail units and business premises.
Supporting services
Basement Conversions
Practical basement conversions that turn underused areas into useful, well-designed living spaces.
Working with Architects and Designers
How Constructum Code works with architects and designers in London — building to your drawings under JCT, as main contractor and Principal Contractor.
Building Control and Regulations
Building control coordination for extensions, lofts and commercial builds across London: stage inspections, notices, certification and the completion certificate.
Interior Design
Thoughtful interior design that transforms layouts, materials, and joinery into cohesive, personalised spaces.
House Refurbishments
Expert house refurbishment that refreshes interiors and reimagines layouts.
Building Services
Quality plumbing, electrics, carpentry, and repair works.
Roofing and Windows
Professional roof renovation to keep your property secure and weatherproof.
Where we work
We deliver residential and commercial construction projects across London and nearby areas.
Request a free quote
Constructum Code is a London construction company specialising in high-quality house extensions, loft conversions and commercial builds for private and business clients.
