A whole-house refurbishment differs from a single extension or loft because it treats the entire property as one connected system. Circulation, room use, structure, services and finishes are redesigned together rather than in isolation, which avoids the compromises that accumulate when a home is altered piecemeal over decades. We begin by measuring the building accurately and mapping what is original, what has been changed and what constrains a new layout — floor levels, chimney breasts, load paths and existing riser positions all shape what is realistic before a single wall is proposed for removal.
Reconfiguration is usually the heart of the brief. Reworking how you move through a house — where the stairs land, how light reaches the middle of a deep plan, how kitchen, living and bathroom zones relate across four or five storeys — is more valuable than any single new room. We test options as coordinated plans and sections so structural implications, ceiling heights and servicing are understood together. On a tall Marylebone townhouse this often means resolving a narrow plan, a constrained lower-ground floor and the wish for a generous principal suite without undermining the building's historic proportions.
Services renewal is where whole-house projects earn their place. Rewiring, replumbing, new heating and hot water, ventilation, drainage and data are far easier to route when floors and walls are already open, so combining them into one contract avoids repeatedly disturbing finished rooms. We coordinate the mechanical and electrical design against the architecture early, agreeing riser routes, plant locations, underfloor heating build-ups and soil-pipe runs before layouts are fixed. In a period property this also means concealing modern services discreetly, so new performance sits behind retained cornices, panelling and joinery rather than scarring them.
Marylebone shapes how that work is delivered. Much of the district sits on managed freeholds — the Portman Estate north of Oxford Street and the Howard de Walden Estate around Harley Street and Cavendish Square — so an estate surveyor's alteration requirements can run alongside Westminster's consent process rather than after it. Leasehold flats add a Licence to Alter from the freeholder. And where a house on or near Harley Street carries a medical or office use history, lawful-use, access and fire strategy can matter as much as the layout, so we confirm the planning and tenure position for the exact address early.
Many Marylebone homes are listed or sit within a conservation area, which changes how ambitious internal change is handled. Listed building consent can be required for works that affect character — moving or altering a principal staircase, removing chimneypieces, changing panelled doors or historic plaster — even where nothing is visible from the street. We design the refurbishment to keep and repair the fabric that gives these interiors their value, upgrading thermal comfort, acoustics and services within that discipline, and we prepare the heritage justification and measured drawings the application requires.
Bringing everything into one contract gives you a single programme, one point of coordination and a scope that consultants, contractor and building control can price and build against. We prepare the existing and proposed drawings, structural and party wall coordination, and the building regulations package, then help you plan phasing and decant — most whole-house schemes are quicker and cheaper delivered in one vacant possession than in occupied stages. Throughout, we keep the design, the consents and the technical detail aligned so decisions on site are informed rather than improvised.
