Main Contractors & Builders
Vetted residential contractors who understand design-led renovation and deliver work to the standard our drawings intend.
A connected process
The specialists behind every project.
Great renovations are never the work of one hand. Design Four collaborates with a carefully built network of trusted trades and consultants — so the design you approve is the home you move back into.
Structural Engineers
Calculations, steelwork and structural strategies that make extensions, loft conversions and open-plan spaces possible.
Planning Consultants
Specialists in London planning policy, conservation areas and permitted development to give applications the best chance.
Electricians
NICEIC-registered electricians experienced in bespoke lighting circuits, smart controls and considered switch layouts.
Plumbers & Heating Engineers
Underfloor heating, hidden pipework, hot water systems and bathroom installations coordinated with the interior design.
Lighting Designers
Layered lighting schemes — architectural, task and ambient — designed to bring out the material and mood of each room.
Bespoke Joiners & Cabinet Makers
Workshops producing hand-made kitchens, wardrobes, media units and joinery designed specifically for your home.
Stone & Tile Suppliers
Curated suppliers of natural stone, porcelain, terrazzo and tile — with samples reviewed alongside the wider material palette.
Decorators & Finishers
Painters, plasterers and micro-cement specialists delivering the quality of finish that considered interiors depend on.
Landscape & Garden Designers
Garden studios who extend the design intent outside — planting, paving and outdoor rooms that connect to the architecture.
Interior Stylists
Furniture, art and soft-furnishing curation to finish the space and bring the visualisations to life on completion day.
Building Control & Surveyors
Approved inspectors, party wall surveyors and measured survey teams who keep projects compliant and on programme.
How we work together
One design intent, carried through by trusted hands.
We coordinate directly with each specialist from the earliest design stages — sharing drawings, setting out details and reviewing samples together — so nothing is lost between design and build.
For clients who prefer a fully managed route, we can assemble the full team on your behalf. For clients with a builder already in place, we work alongside them to protect the design.
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