House Extension Lewisham SE13 Around the Oldest Building in the Borough
St Mary’s church is Grade II star listed and, in Lewisham’s own words, probably the oldest building in the borough. The council calls the ground around it the birthplace of modern Lewisham, where settlement grew along the high street that was once the coaching road from the Kent countryside into London. The conservation area drawn around it in 1976 holds a cluster of Edwardian civic buildings, the former library, fire station, police station and swimming baths, alongside late Victorian terraces.
That is one of six designations reaching into SE13, and four of them carry Article 4 directions. For a postcode most people think of as a shopping centre and a station, this is unusually controlled ground, and the controls are not evenly spread. A street can sit inside a conservation area and outside its direction, or the other way about.
What makes it harder than it needs to be is that one of those directions is not published street by street. The council asks you to ring and find out. Design And Build works throughout SE13 with the drawings, the engineering, the surveying and the trades all done by people we employ.
Four directions, six areas: builders Lewisham SE13
The streets St Marys will not publish
Compare Lewisham’s conservation area pages and one stands out. Brockley states that its direction covers the whole area. Sydenham Thorpes states the same. Mount Ash Road is named outright.
The St Mary’s page says something different. An Article 4 direction has been made to specified streets within the conservation area, and to check whether your street is covered you should contact the council. The scope exists; it is simply not on the website. If your address is anywhere near that boundary, establishing the position is a phone call rather than a search, and it needs making before a design is fixed rather than after.
St Stephens, Mercia Grove and two facing terraces
Two of the borough’s earliest designations are here and both are small. St Stephen’s, designated in 1972, covers the church, the vicarage, five storey terraces and houses in Cressingham Road, St Stephen’s Grove and Glanville Grove, built in London stock brick with slate roofs and stuccoed door and window cases.
Mercia Grove followed in 1975 and is smaller still: two facing terraces of late nineteenth century two storey houses, just east of the shopping centre. Both carry Article 4 directions, made in the council’s standard words, to encourage the retention of high quality architectural features. On an area of two terraces, that means the windows, doors and roof coverings on both sides of one street.
Lewisham Park, adopted in 2019
The newest designation in SE13 was adopted on 26 June 2019. Lewisham Park takes in the park itself, the Memorial Gardens, and the Victorian and Edwardian houses forming what the appraisal calls a crescent of continuous built form on the southern and eastern sides. Bredgar, Malling and Kemsley are inside it.
It came with an Article 4 direction from the outset, which is worth knowing because a recently designated area tends to be assessed more actively than one designated fifty years ago. The appraisal also records that some buildings nearby remain within St Mary’s rather than being moved across, so the two boundaries sit against each other without overlapping.
Where Blackheath reaches into SE13
The Blackheath conservation area crosses the postcode boundary, and applications at Belmont Park, Blackheath Rise, Dacre Park and Oakcroft Road are all determined under it.
The work there runs to roof extensions with rear dormers, single storey infills, two storey side additions and, in one case, alterations to a front garden with a vehicular crossover to create off-street parking. Front boundary changes inside a conservation area are their own application, separate from anything happening at the back of the house.
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One builder laid out five streets: house renovation Lewisham
Generously sized and distinctive as a group
The Ladywell conservation area, designated in 2010, exists largely because of one man. Lewisham names him: the local developer Samuel J. Jerrard, who through the 1880s and 1890s built up long stretches of Vicars Hill and the newly laid out Algernon Road, Algiers Road, Ermine Road and Embleton Road.
The council describes his houses as generously sized and stylistically distinctive as a group, and records that the development survives nearly complete, including its rich architectural detailing. It also notes that many of his other houses are protected within the Brockley conservation area. One builder, two designations, and a consistent detail vocabulary across both. Matching it is the job on any Jerrard house.
Ladywell Village and the Edwardian shops
The same designation covers the commercial core along Ladywell Road, known locally as Ladywell Village, which the council says contains some of the oldest houses and pubs in the area alongside Edwardian shops built at the turn of the century as the population grew around them.
Shopfronts are their own discipline. Lewisham publishes a shopfront design guide and expects commercial work to comply with it, and commercial properties carry narrower permitted development rights than houses do to begin with. Work above a shop is frequently a different application from work behind it.
Everyone we send is on our payroll
A renovation on this stock touches lime mortar, sash boxes, slate, cast iron and lath and plaster, and the trades that handle those well are not the trades that handle a new build well.
Ours are employed rather than found. That matters most on the parts nobody photographs: the reinstated cornice, the repaired sash rather than the replaced one, the pointing done in something softer than the brick. Interior design joins while the layout can still change, not after the plaster is on.
Design and build SE13, street by street
Class MA and the ground floor office
The town centre converts commercial floorspace into homes, and the route is prior approval rather than full permission. One application at the Rivoli Apartments on Ladywell Road sought change of use of a ground floor office and meeting room into a self-contained flat under Class MA.
Class MA has conditions attached, on floor area, natural light and prior vacancy, and it is a prior approval rather than a right. It also sits inside a conservation area in that case, which narrows what can change externally. Establishing which route applies before the drawings are done saves redrawing them.
A leisure centre becoming four blocks
The larger version of the same idea is visible behind Place Ladywell, where the former Ladywell Leisure Centre site was proposed for four residential blocks of three to seven storeys, with new public realm and play space.
Schemes of that size reset what officers consider acceptable nearby. A neighbouring application is judged against what has been permitted around it, so a district in active redevelopment is one where the precedent moves. Knowing what has recently been approved on the next street is worth more than a general principle.
Alterations and Extensions, and what the SPD expects
Lewisham publishes an Alterations and Extensions supplementary planning document, and it sets the design expectations every householder application here is measured against.
It is not a formality. An application that reads as though the author has seen it, addressing subordination, materials, roof form and impact on neighbours in the terms the document uses, is a different proposition from one that does not. Our architects draw to that document rather than to a house style, and our engineers size the structure while the layout can still move.
A construction company Lewisham that prices the whole thing
Two Article 4 regimes running at once
Lewisham operates roughly eighty-nine Article 4 parcels, and for a homeowner they fall into two quite different groups.
The conservation area directions remove householder permitted development on named areas or streets. Separately, a borough-wide regime removes the right to convert a house into a small house in multiple occupation, applied to the southern wards from March 2020 and to the rest of the borough from January 2024. The two overlap without interacting, and an address can sit under both. If the work turns out to fall outside both, a lawful development certificate puts that on record before anyone starts.
Ravensbourne, Quaggy and flat ground
Two rivers meet in Lewisham, the Ravensbourne and the Quaggy, and the conservation area around St Mary’s sits on flat land beside one of them.
Low flat ground next to a watercourse behaves differently under load from the clay slopes further south, and it changes the drainage strategy as much as the foundation design. Surveyors we employ serve notices under the Party Wall etc. Act 1996, which on a terrace here engages both flanks, and one construction company carries the survey, the drawings, the structure and the build under a single agreement.
Area We Cover
One address, and we map every layer on it
Send it and back comes the full position: which of the six conservation areas reaches you, whether one of the four directions applies, what the HMO regime does at your address, and what the Alterations and Extensions document will expect.
Where the St Mary’s direction might be in play, we make the call to Lewisham rather than leaving it to you. We cover Lewisham and SE13 — the high street, Ladywell, Ladywell Village, Vicars Hill, Lewisham Park, Belmont, Mercia Grove and the Hither Green edge — along with Brockley, Blackheath, Catford, Deptford, Lee and the neighbouring SE districts.
Surveys cost nothing. In SE13 ours starts with the boundary maps and, where needed, a phone call.
