Construction drawings in Camden

Flats first, houses second

Only 13.3 per cent of Camden households live in a house, and only 29.7 per cent own their home. That makes a typical Camden job a flat conversion, a roof alteration on a leasehold block, or an internal reconfiguration. On a leasehold block, that usually means freeholder consent, and often a neighbour agreement, before work begins.

The heritage layer is exceptional: 40 conservation areas, 21 Article 4 directions, 1,971 Historic England list entries and 16 registered parks and gardens, with 35 heritage assets at risk. In practice, almost every street has a layer of control. We start by finding it.

Tall houses, narrow stairs

Camden's terraces are tall and narrow, so the stair is where the design usually pinches. The limits are: Private stair: rise 150-220 mm, going 220-300 mm, max pitch 42°, 2R+G 550-700 mm. And 2.0 m clear headroom over stairs. A new top-floor flight must clear that headroom while the floor below keeps its own.

Fire is the other constraint in a tall house. A bedroom on an upper floor needs this: Escape window: unobstructed openable area at least 0.33 m², at least 450 mm high and 450 mm wide, bottom of opening no more than 1100 mm above floor. In a heritage street, a window that meets it may still be unacceptable on the front, so we usually propose the opening on the rear elevation and show the compliance clearly.

Camden's timing and success rates

The council decided 394 householder applications in its latest year, granting 89.1 per cent. Only 77.7 per cent were decided in time, a figure that matters when a builder is waiting. The Planning Inspectorate decided 76 householder appeals here and allowed 35.5 per cent.

Past performance is not a promise. We use these figures to set honest expectations: allow time between decision and start, and avoid booking trades before conditions are discharged.

Party walls, neighbours and access

In a Camden terrace, a structural alteration to a shared wall usually brings in the Party Wall Act. The notices are separate from the drawings, but the drawings are what the neighbour's surveyor reads. A clear section showing the new beam, its bearing and the existing wall makes the process faster and cheaper.

Access is the other practical limit. Many Camden streets have restricted parking, narrow pavements and no room for a skip, so we note deliveries, hoisting and storage on the drawings where they affect the programme. A builder who knows the constraints will price them in, instead of claiming for them later.

Basements, lightwells and rear additions each have their own details, and each interacts with a neighbour's foundations. Where the drawings rely on an assumption about the neighbour's wall, we say so on the sheet.

Scope, price and related help

The fee is fixed after our free constraints check. The set includes plans, sections, details, schedules and a specification; mechanical and electrical services have their own drawings if the job is large.

Next steps: building regulations drawings in Camden for the submission, house extension drawings in Camden for a rear or side addition, and architectural drawings in Camden for the borough summary. Neighbouring options: Westminster, Brent, Barnet and City of London.