Construction Company in London

A dedicated leader for your project to coordinate specialists, enforce deadlines, and ensure quality control.

For commercial Construction commissions: hospitality, retail, and multi-unit development.

What We Do

Sovran's construction service is delivered by people who have built at every scale. From a rear extension in Richmond to a full new build in Surrey. We manage the entire process in-house, coordinating every trade, timeline, and material decision from groundwork to handover.

Every contractor on our sites operates under a specification agreed before work begins. Scope is fixed, trades are vetted, and the standard is set once. The result is a build that reflects the quality of the investment behind it: clean finishes, professional structure, and a site handed back exactly as the drawings intended.

Subservices

Built across every scope.

Extensions

Built as part of the house.

Rear, side return, wraparound, and double-storey extensions across London and the Home Counties, each architecturally resolved as part of the existing house rather than an addition bolted onto it.

ScopeRear · Side return · Wraparound · Double storey

Typical Timeline12–28 weeks depending on scope

Applicable toResidential properties across London & Home Counties

Learn more about extensions

Loft Conversions

The floor that was already there.

Dormer, hip-to-gable, and mansard loft conversions designed and built with the same architectural rigour as every other floor in the house. Party wall agreements handled, structural design coordinated, planning secured where required.

ScopeDormer · Hip-to-gable · Mansard

Typical Timeline10–22 weeks depending on configuration

Applicable toDetached, semi-detached & terraced houses

Learn more about loft conversions

Basement Conversions

Below ground. Above expectations.

New excavation and existing cellar conversions across London boroughs where soil conditions, neighbouring properties, and planning constraints make the process genuinely complex. Structural engineering, party wall procedures, and building control sign-off managed as part of the project.

ScopeNew excavation & existing cellar conversion

Typical Timeline16–28 weeks

Applicable toLondon residential & prime Home Counties

Learn more about basement conversions

Full Renovations

Stripped back, handed complete.

Some houses need more than a refresh. Sovran takes them back to brick, reconfiguring layouts, replacing services, and finishing every room to a high-end standard. Structural work, replastering, rewiring, replumbing, joinery, and fit-out managed as a single project with a dedicated site lead. Every decision is made before the first wall comes down, so the project moves without interruption from demolition to handover.

ScopeStructural, services & full finish

Typical Timeline16–40 weeks depending on size

Applicable toPeriod & modern residential properties

Landscaping & Swimming Pools

Beyond the back door.

An outbuilding is only worth building if it is worth spending time in. Sovran designs and builds garden rooms, home offices, pool houses, and outbuildings that are insulated, serviced, and finished to the same standard as the main house. Many fall within permitted development. Those that don't, we take through planning. The brief can be as simple as a quiet office or as involved as a full entertainment suite with its own kitchen and bathroom, either way, the structural and architectural quality is the same. Swimming pools are specified with full plant room integration, automated cover systems, and landscaping designed properly and under the necessary regulations from the first drawing.

ScopeLandscaping, pools, outbuildings & garden rooms

Typical Timeline8–24 weeks depending on scope

Applicable toAll residential projects with external space

Our approach

Pre-Construction Planning

Detailed scheduling, procurement strategies, and risk assessments are established before any ground is broken. We define milestones, appoint specialist contractors, and set quality benchmarks.

Site Preparation & Foundation

Groundworks, drainage, and structural foundations are executed with precision. Our site managers enforce tolerances and conduct daily inspections to ensure everything is built to specification.

Structural Build

The superstructure rises under constant supervision. Steelwork, masonry, roofing, and weatherproofing are coordinated to maintain momentum and quality throughout.

Interior Fit-Out

Mechanical and electrical first fix, plastering, joinery, and finishing trades are sequenced for maximum efficiency. Each stage undergoes sign-off before the next begins.

Final Inspection & Handover

A comprehensive snagging process, building control sign-off, and meticulous handover pack ensure you receive a finished space that meets every specification and standard.