House Extension Greenwich SE10 on a Georgian Townhouse Plot
Greenwich SE10 is four different places wearing one postcode. Greenwich Creekside holds close to eleven thousand people inside half a square kilometre — more than twenty-two thousand to the square kilometre, the densest ground anywhere in this part of London. East Greenwich runs at roughly half that. Greenwich Park and Greenwich Peninsula look similar on paper at around five thousand each, but for opposite reasons: one contains a royal park, the other a former gasworks now covered in new towers where the average age is barely thirty.
The housing follows the same split. Georgian and early-Victorian terraces climb Crooms Hill and Royal Hill behind the town centre, many of them listed, most of them narrow and deep with small rear yards rather than gardens. The Ashburnham Triangle holds tight Victorian streets between three main roads. East Greenwich is later Victorian terracing running down towards the river. And the Peninsula is almost entirely flats built in the last twenty-five years, where permitted development does not apply at all because no flat in England has it.
Then there is the layer that catches people out. Four conservation areas cover the district — West Greenwich, East Greenwich, Greenwich Park and the Ashburnham Triangle — and three of them carry directions withdrawing rights that everyone outside still holds. Royal Greenwich has twenty-three conservation areas in total and only six carry such a direction. Half of those six are here.
House extension Greenwich: the schedule names your house number
Painting the outside now needs permission
The Ashburnham Triangle direction was made in May 2013, confirmed in April 2014 and came into force on 21 May 2014, replacing an earlier one from 1994. Its schedule lists what it withdraws, class by class.
It covers the enlargement or alteration of a dwellinghouse, any other alteration to the roof, the erection of a porch outside an external door, the installation of a microwave antenna, and the erection or alteration of any gate, fence, wall or other means of enclosure. And, added in 2013 where the 1994 direction had not reached it, the painting of the exterior of any building. Repainting a front elevation in this part of Greenwich is development, and it needs an application.
Randall Place, Churchfields and the town centre
West Greenwich carries two separate directions rather than one. Greenwich’s own management guidance sets out what each does: the first removes permitted development rights from single dwellings in Randall Place and Churchfields, and the second controls exterior painting of buildings in the town centre, including Greenwich Church Street.
So exterior paint is controlled in two separate parts of the district under two entirely separate instruments, made decades apart. East Greenwich carries two directions of its own. Greenwich Park carries none at all, which means the national rules for designated land apply there and nothing beyond them.
How much depth the garden actually allows
The Ashburnham schedule does not cover a boundary drawn on a map. It names properties by street and by number, and the exclusions matter as much as the inclusions. Number 25 Ashburnham Grove is expressly left out of an otherwise continuous run, and so are numbers 33, 34 and 35 Greenwich High Road, along with 66 to 68 Guildford Grove.
Hard surfacing within the curtilage is restricted on three streets only — Ashburnham Grove, Ashburnham Place and Catherine Grove — and not on the other eight. Your neighbour may hold rights you do not. We check the schedule against the specific address before anything is measured, because on these plots the depth available at the back is small enough that a wrong assumption changes the whole design.
Get a Free Quote
Tell us about your project and we’ll get back to you shortly.
Builders Greenwich working inside a World Heritage buffer zone
Inscribed core, buffer zone and which one you are in
This is the most common misunderstanding in SE10, and it is worth clearing up before anything else: homeowners here routinely believe their house stands inside the World Heritage Site itself, and almost none of them do.
The inscribed property is the monumental core: the Old Royal Naval College, the Queen’s House, the Royal Observatory and the Cutty Sark. The surrounding streets are in the buffer zone, and that buffer zone is formed by three conservation areas — West Greenwich, East Greenwich and Blackheath. Work there is handled as a conservation area application by the council, not as an international heritage matter. It still means townscape and setting weigh heavily on the assessment.
Two limes, one garden wall, and a felling application
Every tree in a conservation area is protected, and six weeks’ written notice must go to the council before any pruning or felling. That catches more Greenwich projects than the buildings do.
A Crooms Hill owner applied to remove two large limes from the side of a rear garden because they were damaging a wall, and the council required replanting with suitable species. A Christchurch Way owner applied to take out a eucalyptus on structural grounds. Mature trees close to a Georgian rear elevation raise both consent and ground movement questions, and the notice period sits at the front of the programme rather than the middle.
Building against the flank wall, and notices each way
These terraces are joined on both sides and the plots are narrow, so almost anything structural touches a shared wall. The Party Wall etc. Act 1996 is engaged twice over on most schemes here.
Cutting in for a beam, taking a foundation deeper than the neighbour’s, or working within three metres of an adjoining structure all trigger it. Surveyors we employ serve the notices and agree the awards, and our structural engineers size the openings against what a solid brick flank wall will actually carry.
House renovation Greenwich inside protected fabric
Sash windows, doors and a roof you cannot alter
Where a direction applies, the parts of the house most people want to change first are exactly the parts that are controlled. Windows and doors, roof coverings, roof alterations, porches, front boundary walls and railings.
Replacing timber sashes with sealed units is not a maintenance decision here; it is development requiring consent, and refusal is common where the originals survive. Slimline double glazing within a refurbished sash box is usually the route that gets approved. Doing it once, correctly, costs less than doing it twice.
Lime plaster, breathable finishes and Georgian fabric
Georgian and early-Victorian walls are solid brick in lime mortar, finished internally in lime plaster on timber lath. They were built to let moisture pass through and dry out.
Gypsum plaster, cement render and modern masonry paint all stop that movement. The water stays in the wall and reappears as blown plaster, decayed lath and rotting joist ends where they bear into the brickwork. Lime repointing, lime plaster and breathable paints cost more and are what this fabric needs. Interior design comes in once that is settled.
When consent runs alongside the planning application
The borough holds 542 listed buildings, twenty-eight of them Grade I, and a good number stand on the Georgian streets behind the town centre. If yours is one, listed building consent is required as well as planning permission.
They are separate applications judged against separate tests, and one can succeed while the other fails. Listed building consent looks at harm to special interest and applies to internal work as well as external — removing a chimneypiece or altering a staircase can need it. Work carried out without it is a criminal offence rather than a planning breach, which is a distinction worth knowing before anything is stripped out.
Design and build Greenwich, drawn for a heritage assessment
What a heritage statement has to show
An application here is assessed against the character appraisal for the conservation area it sits in, and where the buffer zone applies, against setting as well. A heritage statement is usually required as a validation document.
It has to identify the significance of the building and its surroundings, explain what the proposal does to that significance, and justify any harm against public benefit. A statement written from a template says nothing about your house. Our architects write it from the appraisal and the building itself.
Listed building consent alongside the application
Where both consents are needed we prepare and run them together rather than in sequence, because the tests differ and a scheme can satisfy one while failing the other.
Drawings that show existing fabric accurately, and distinguish clearly between what is original and what is later, do most of the work. Officers approve schemes they can understand. Ambiguous drawings generate questions, and questions generate months.
Construction company Greenwich, and the list that decides the route
Everyone we need, employed in one office
Four constraints can land on a single SE10 project: a conservation area, a direction naming your house number, buffer zone setting, and listed building consent. Split across four firms, nobody holds the whole picture and the gaps between them become your problem.
Inside one construction company the design, the structural work, the party wall notices and the build sit together. We check the schedule and the designation first, then draw, then price. Applications go to Royal Greenwich from us and stay with us to decision.
Area We Cover
What is the address, and what number?
The number is not a formality here. Send us the full address and we will confirm which conservation area reaches you, whether your property appears in a direction schedule, whether the buffer zone applies, whether the building is listed, and which trees on the plot need notice served.
We cover Greenwich and SE10 — the town centre, Crooms Hill, Royal Hill, the Ashburnham Triangle, East Greenwich, Christchurch Way and the Peninsula — alongside Blackheath, Charlton, Deptford, Woolwich and the surrounding SE districts.
Surveys are free. In SE10 ours begins by finding your address on a schedule.
