Construction drawings in Richmond upon Thames

Energy standards without harming a period house

New elements must meet limiting U-values: New elements in existing dwellings, limiting U-values W/(m²·K): roof 0.15, wall 0.18, floor 0.18, windows 1.4 (or WER Band B), doors 1.4. In a period house the hard cases are timber sash windows and solid walls. We draw thin double glazing options and internal insulation build-ups, with the junction drawn so moisture has somewhere to go.

Where the building is listed, the regulations still apply, but the guidance allows reasoned compromise. The set records the reasoning so building control and the conservation officer see the same justification.

If your scheme needs consent first, planning drawings in Richmond upon Thames deal with the application and the technical sheets follow the permission.

Large extensions in Richmond and what the figures show

The council's statistics record 78 prior approval notifications for large single-storey rear extensions granted and 30 refused. Even so, houses in conservation areas may lose permitted rights, so check before assuming this route.

A rear extension to a period terrace meets an old wall of uncertain depth. We survey the wall, record its thickness and condition, and draw the junction with a lintel, a cavity tray and a weathering detail that fits the existing brickwork.

Stairs, loft access and escape in a Richmond terrace

Period stairs were built to older proportions. Today's private stair rule is Private stair: rise 150-220 mm, going 220-300 mm, max pitch 42°, 2R+G 550-700 mm, and a loft stair has to meet 2.0 m clear headroom over stairs. We draw the old stair and the proposed one against the new roof pitch to find the layout that works.

An upper-floor bedroom needs a way out, and the rule is 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. On a street where windows are controlled by the council, the escape opening has to be a conservation-grade window, and the drawing names the product.

Planning pace, price context and neighbours

Richmond decided 1,302 householder applications in its latest published year, granting 83.3 per cent and deciding 98.3 per cent in time. Terraced houses average £915,886, so detail that protects a period building is money well placed.

Where a garden has mature trees or runs down towards the river, root zones, drainage falls and ground conditions can change where foundations may go. Period houses also hide surprises: a chimney breast cut away in the past, a floor on unexpected joists, a wall that is thinner than it looks. We record what is visible and the drawings ask the engineer for the rest. The fee is fixed after a free constraints check, and a second chartered technologist checks every sheet. For the set sent for approval, see building regulations drawings in Richmond upon Thames; for the beams, structural calculations in Richmond upon Thames. The borough overview is architectural drawings in Richmond upon Thames, and we also draw in Kingston upon Thames and Hounslow.