Our services

Design & Build

As a design and build contractor in London, MVV holds the design and the construction of your project under one roof, so you have a single point of responsibility from the first idea to the final handover. That means clearer communication, a tighter programme and firmer control over cost. A dedicated project manager stays with you at every stage, across West, South West, North West, Central and South East London, so the brief you agree is the home you receive.

Feasibility study

We assess what your property can realistically deliver against your vision, budget and the relevant planning rules, so you start with a clear, honest picture before any money is committed.

Pre-design

We refine your early ideas and set the foundation for the design and the budget together, making the key decisions that keep the project on track and aligned with planning expectations.

Design

Our architectural design brings together the structural and interior detailing into one coherent plan, so the build flows from a single, considered vision.

Pre-construction

We prepare everything needed for a clean start: health and safety planning, site logistics and a detailed construction programme, so the first day on site is the right one.

Construction

We deliver the build in clear phases: demolition, structure, carpentry, mechanical and electrical, tiling, flooring, plastering, decorating and the final fixtures and furnishings, all managed by one team.

Completion and handover

We complete snagging, issue a full handover pack and hand you a clear record of the specifications and finishes used, so you know exactly what has gone into your home.

Detailed schedule of works

Every stage carries a clear timeline and a precise budget, so the project stays well managed and free of surprises.

Interior design package

A complete interior design service, with technical drawings and 3D visuals, helps you see and shape your home before a single wall is moved.

Planning and permissions

We manage the planning process for you, from application to approval, keeping the project compliant with the regulations that apply to your London property.

Engineering design

Our designers and engineers work side by side to deliver designs that are safe and efficient, often unlocking sensible savings along the way.

Budget analysis

We analyse the full cost picture, covering materials, labour and a realistic allowance for the unforeseen, so you have genuine financial transparency from the outset.

Why choose design and build

A design and build contractor gives you a single point of responsibility for both the design and the construction, which removes the gaps where miscommunication, cost overruns and delays usually hide. It is the calmest way to deliver a high-end home.

The projects we handle

We deliver residential and commercial design and build projects across London, including house extensions, loft conversions and full refurbishments. Whether your scheme is a single room or a whole-house transformation, the same accountable team takes it from design to completion.

How we protect quality

We safeguard quality with skilled craftspeople, considered materials and close oversight of every detail, supported by regular checks at each stage of the design and build process.

How much does a design and build project cost in London?

As a realistic 2026 starting point, all ex VAT and indicative: our minimum for a complete single storey extension project is around £85,000, and on typical London jobs priced on our estimator in October 2026, rear dormer loft conversions land between £68,000 and £81,000 and a whole house refurbishment with a new extension runs roughly £1,100 to £1,350 per square metre of all the floor worked on, with windows, doors, sanitaryware and tiles priced for fitting only, and kitchen units, worktops and appliances left out. Every project is different, which is why the instant estimator on this site prices yours from your own description and sends a realistic range to your inbox in minutes.