Loft conversion in Blackheath

Test the roof space before settling on a layout.

Start with the loft conversion brief

A measured roof survey should establish headroom, structural spans and where a staircase could meet the floor below. Plan the stair, escape route, insulation and building services together before treating the loft as another room.

Compare the proposed roof shape with the address-specific design guidance below. Record chimneys, shared walls and neighbouring rooflines, then ask the appointed designers to identify the structural work and consents the proposal needs.

The local building context

The appraisal finds the area’s significance in the quality and diversity of its housing, from grand Georgian and Victorian villas to compact flats. Pond Road has listed 1830s Regency stucco villas and, beyond the church, four 1860s villas; Morden Road, laid out in 1852–3, has large yellow-brick villas, some divided into flats by the 1930s. Between 1958 and 1969 Span replaced eight houses with 240 houses and 181 flats; its hallmark was the short terrace, often grouped round a courtyard or set among shared gardens. Cator Estate South has two-storey brick houses of the 1930s.

Beside it lies Royal Greenwich’s Blackheath conservation area, designated in 1968, which covers the streets east of the Heath between Kidbrooke, Maze Hill and Blackheath Park and was substantially complete by 1900. Its set pieces include Morden College, a charitable foundation of 1695, and the Paragon, four-storey paired villas linked by colonnades, built on one of the first Cator leases. Its appraisal records homes from modern purpose-built flats to substantial mansions, and says many of the mansions have been subdivided. It gives Welsh slate as the prevailing roof, with widespread replacements in concrete tiles and artificial slate.

An SE3 address can fall in Royal Greenwich or in Lewisham. The centre of Lee Road is the borough boundary, and Blackheath Village is split, with its east-side frontages in Royal Greenwich and the rest in Lewisham. Pond Road, wholly in Royal Greenwich, is split between two of its conservation areas: the council’s tree list places Nos 2–12 and 1–9b in Blackheath Park and the rest in the Blackheath conservation area, though that list’s conservation column is not always reliable. Ward names such as Blackheath Westcombe settle nothing either. Check the council’s map, the statutory and local lists, the Article 4 pages, your title or lease and the planning history for the exact address.

Local design and consent context

The council’s conservation page lists a Blackheath Park conservation area appraisal, with photo surveys and a boundary map, and a Blackheath appraisal in four parts with its own boundary map, both labelled 2013. Their text was written before summer 2010 and the photo surveys date their fieldwork to 2006, so treat them as the council’s appraisals listed as 2013 rather than recent studies. Each describes itself as a non-statutory planning document to be read with national, regional and local planning policy.

No Article 4 direction on householder alterations is listed for Royal Greenwich’s Blackheath or Blackheath Park conservation areas. The 2010 guidance said the council would consider one on removing front boundary walls in Blackheath and one on roofs and dormer windows on the Cator Estate, but a proposal to consider is not a direction. Two Royal Greenwich directions do apply. The first, borough-wide and in force from 27 September 2018, means planning permission is needed to turn a house into a small house in multiple occupation. The second, in force from 8 August 2023, removes the right to convert commercial (Class E) premises to homes within mapped centres, including Blackheath District Centre; it concerns shop and office units, not houses.

Lewisham lists four directions in its Blackheath conservation area: Belmont, Collins Street, 52 Lee Terrace and Quentin Road. It explains that its directions apply only to houses in use as a single dwelling, and that under a direction external changes to elevations visible from public viewpoints need planning permission. Their dates and the properties they cover are not set out here, so ask Lewisham whether your street is covered, as its conservation area page invites.

Access and site planning

On Royal Greenwich streets, a skip on the road needs a licence that only a skip hire company can obtain, usually valid for 30 days, while a skip in a front garden or driveway needs none. Scaffolding and hoardings on a public street or pavement need licences, as do building materials left there, and parking bay suspensions should be applied for 10 working days ahead. The Blackheath Park appraisal records that only Lee Road, Bennett Park and Cresswell Park are public roads there, so on an estate road ask who controls it before booking. On the Lewisham side, a skip on the highway needs a licence, and scaffolding or hoarding licences are requested at least five days ahead.

Continue planning

The Blackheath area guide · Loft conversion across London · Hampstead Architecture & Planning · Hampstead Chartered Surveyors

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