Planning and building regulation drawings in Blackheath (SE3)

Blackheath's building stock runs from the Georgian terraces on Montpelier Row to the smaller Victorian terraces climbing the streets toward the heath, plus a scattering of mid-century Span houses on the Cator Estate side that carry their own quiet, coherent design language. Lewisham doesn't publish its householder Article 4 position for this area on the open register, so whether permitted development still applies to a given roof or rear addition on Lee Road or Wemyss Road genuinely has to be checked address by address rather than assumed from the street pattern. Kidbrooke, by contrast, has no local direction narrowing permitted development at all: the constraint there is less about consent and more about matching brick, render and roofline closely enough that a rear extension on Sweyn Place or Paddock Close reads as part of the house it's attached to. New-build homes in Kidbrooke Village bring a separate wrinkle, too. Estate management conditions and developer covenants can restrict alterations quite apart from anything the council decides.

Because the borough boundary runs along Shooters Hill Road and the A2, some Blackheath addresses (The Paragon among them) are actually administered by Greenwich rather than Lewisham, which changes who you're applying to before a single drawing gets started.

Planning in Blackheath: what to know before you apply

Lewisham controls design closely within the Blackheath conservation area, so alterations to frontages, rooflines and materials on the Lewisham side of the postcode tend to draw more scrutiny than the same work would elsewhere in the borough; the council also runs a borough-wide direction removing permitted development for small-HMO conversions (C3 to C4), which matters if a Blackheath house is ever let as a shared house; converting a house into self-contained flats is a separate change of use and needs planning permission everywhere, regardless of that direction. Greenwich, covering the Kidbrooke side and the Greenwich-administered pocket of Blackheath, applies its own conservation controls around West Greenwich and Westcombe Park and weighs proposals near the river against protected long views toward the Royal Observatory, though that consideration fades the further a site sits from the Maritime Greenwich setting. Neither council has published a local direction that narrows permitted development specifically in Kidbrooke, so most rear and loft work there still qualifies as permitted development, subject to the usual depth and height limits. We check the live designation for your address, on either side of the boundary, before drawing anything.

Applications are decided by London Borough of Lewisham — its planning pages.