Party Wall Surveyor Bexley: Compare Quotes
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Post a Party Wall job for a property in the London Borough of Bexley. The administrator reviews the complete enquiry and could invite suitable qualified surveyors to provide independent quotes when the comparison service is available.
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More semi-detached homes than any other London borough
At Census 2021 Bexley recorded 95,298 households:
- 42,154 in a semi-detached house
- 22,536 in a terraced house
- 20,318 in a purpose-built block of flats or tenement
- 7,054 in a detached house
- 1,687 in part of a converted or shared house
- 1,166 in a commercial building
Comparing all 33 boroughs, that semi-detached count is the highest in London, ahead of Havering. Houses of all kinds account for 75.28 per cent of households, second only to Havering.
The figure that matters most here is the one you get by adding the first two rows. 64,690 households — around two thirds of the borough — live in a dwelling that shares a party wall. For party wall purposes that is a higher proportion than almost anywhere in London.
A 1930s borough, not a post-war one
It would be easy to assume an outer borough like this filled up after the war. The numbers say otherwise.
Bexley recorded 37,660 properties built between 1930 and 1939 — 37 per cent of the entire stock, and by far the largest single band. Interwar construction between 1919 and 1939 comes to 41,560. Everything built between 1945 and 1972 comes to 22,420, barely half as much. Only 7,000 properties predate 1900.
So the characteristic Bexley property is a 1930s speculative semi, which is exactly what the census figures describe. That form shares a substantial flank wall with its pair, usually with a chimney stack inside it, and it is now at the age where rear extensions, loft conversions and chimney breast removals cluster.
These Valuation Office Agency counts are rounded to the nearest ten and count dwellings on the Council Tax list rather than households, so they do not share a denominator with the census figures above.
One structural reason the stock stayed low-rise: the adopted Local Plan records that the borough “has no Underground, Docklands Light Railway, tram or other rapid transit services” and sits on the cusp of the lowest public transport accessibility ratings.
The rules changed in June 2026
This is the most important practical fact on this page, because it is recent enough that older advice is now wrong.
Bexley adopted a new Design Guide Supplementary Planning Document Part 2, Building Alterations and Extensions, on 29 June 2026. It replaces the Design and Development Control Guidelines SPD, the Crayford Residential Design Code, the Crayford Town Centre Design and Identity Guide and the Sustainable Design and Construction SPD.
If you are working from any of those, or from a guide that quotes them, you are working from superseded material.
One caution on the document itself. Its introduction still reads as though adoption were in the future — “Once adopted, the Design Guide SPD Part 2 will also be a material consideration”. That is pre-adoption wording carried into the published file. The council’s separate statutory adoption statement is what confirms the position.
The standards that touch the boundary
Several of the new standards are boundary standards, which is where they intersect with the Act:
- single storey rear extensions to terraced and semi-detached properties: maximum depth 3.5 metres, maximum height 4 metres, maximum eaves height 3.1 metres;
- for detached properties, the depth must not obstruct a line drawn at 45 degrees from the centre line of the nearest neighbouring habitable window, or 3.5 metres, whichever is greater;
- two storey rear extensions to a semi-detached property should be set in from the boundary with a neighbour by 2 metres, and typically no wider than half the width of the existing house;
- side extensions should be less than half the width of the original house, and where the gap between flank wall and boundary is 4 metres or more, a side passage should be provided with the extension set in at least 1 metre from the boundary;
- outbuildings within 2 metres of the boundary are limited to 3.1 metre eaves and 4 metres overall, and development must leave 50 per cent of the garden open;
- terraces and decks over 300 millimetres above ground level need planning permission.
Two further rules are worth knowing because they change what counts as the starting point. Cumulative extensions should not cover more than half an existing garden, and depth is measured from the rear wall as the house stood on 1 July 1948 for older properties — which expressly permits extending onto a Victorian outrigger.
Guttering, and a council that says the quiet part out loud
Most councils treat the Act as somebody else’s business. Bexley does that too, but it adds a practical warning that is unusually concrete.
Paragraph 1.30 of the new guidance:
The detailing of side extensions is particularly important to ensure elements such as guttering do not overhang the boundary. These should be designed into parapet walls and always shown on submitted drawings.
And on dormers, paragraph 2.3 requires “appropriate set-ins from the gable, roof hip, party boundary and eaves”.
The same document carries a dedicated Party Wall section, which states that the Act “is not a material planning consideration and is independent of obtaining planning permission or building regulations approval”, that the council “is unable to either advise on, or deal with party wall matters”, and then this:
based on the Council’s extensive experience of residential planning applications, to avoid neighbourly disputes and project delays, applicants are encouraged to ensure their development remains within their site boundaries. This includes the location of guttering and other fixtures.
It closes by noting that a party wall surveyor can provide professional services to assist with the process.
That guttering point is worth taking seriously. An eaves detail that oversails a neighbour’s land is a trespass regardless of what planning permission says, and it is exactly the sort of thing that surfaces late, once the extension is built.
Basements: no policy, but two documents required
The Bexley Local Plan, adopted 26 April 2023, contains no basement or subterranean development policy at all — searching it returns no occurrence of “subterranean” or “cellar”. The only basement provisions sit in Policy DP32 on flood risk, which provides that basements will not be permitted in Flood Zones 2 or 3, and requires a non-return valve or similar device against sewer backflow.
The substance is in the new guidance instead, and it is more demanding than the plan’s silence suggests. Basements are limited to one floor below ground. Paragraph 1.68 requires that all basement planning applications include a Basement Impact Assessment. And where permission is granted, paragraph 1.69 requires the householder, by condition, to submit a
Construction Method Statement certified by a qualified engineer … detailed information on the excavation, temporary works and construction method. The statement should include reference to potential impacts to neighbouring properties and land
Areas prone to sinkholes will typically not be considered acceptable, and basements may not be self-contained dwellings or contain main living or sleeping accommodation.
For an adjoining owner that condition is useful. It means an engineer’s account of the excavation and its effect on neighbouring land should exist, and it addresses the same subject matter an award does.
Where permitted development has been withdrawn
Bexley operates seven Article 4 directions. Most do not touch householder work: two concern commercial to residential conversion, and a borough-wide direction in force from 24 September 2017 covers changes of use to houses in multiple occupation.
Four conservation area directions do reach householder rights — Brook Street, Old Bexley, Old Forge Way and Red House Lane. On the council’s own description they bring under control minor alterations including attic rooms, enlargements or improvements to the exterior of a dwelling or garage, alterations to windows, rendering, changes of roofing material, and external alterations affecting any part of the roof.
A limitation worth stating. The documents the council publishes for those four are plain-English summaries rather than the sealed instruments. They carry no dates and no reference to any permitted development class, so the effects are clear but the precise scope and commencement are not. They also apply to named properties rather than whole areas. Check the position for a specific address with the council rather than inferring it.
Bexley has published none of its directions to the national planning data platform, which returns nothing for the borough — so a tool relying on that dataset will wrongly show no constraints here at all.
The adopted plan records 23 conservation areas. The national platform lists 31, but eight of those are undated duplicate records from a 2020 data load.
In the year ending March 2026 Bexley determined 939 householder development decisions — tenth of the 33 London boroughs — against just 8 listed building consents to alter or extend, among the lowest in London. Both are decisions rather than grants. This is a borough of ordinary unlisted houses, and householder work makes up about seven in ten of all its planning decisions.
Explain the property and proposed work
Provide:
- the full property address;
- whether the property is semi-detached, terraced, detached or a flat;
- which walls are shared, and with whom;
- whether the works involve a flank wall, chimney breast, roof line or dormer;
- how far the works project from the rear wall, and how close they come to the boundary;
- whether guttering, eaves or any other fixture would come near or over the boundary;
- whether a basement is proposed, and its depth;
- whether the property lies in a conservation area, and particularly in Brook Street, Old Bexley, Old Forge Way or Red House Lane;
- whether you are carrying out work or responding to a neighbour’s work;
- a clear description of the proposed construction;
- drawings where available;
- notices, responses and correspondence already exchanged; and
- known dates and access constraints.
Compare the proposed appointment
Each quote should explain who would appoint the surveyor and the work included. That may involve reviewing drawings, notices, inspections, a schedule of condition, preparation of an award, liaison with another surveyor or later visits.
The party wall notice guide explains which notice applies to which work and how far ahead it must be served. The Party Wall surveyor guide explains when a surveyor may be needed, and the Party Wall surveyor cost guide explains the factors that can affect the proposed fee. Neighbouring coverage includes Party Wall surveyors for Bromley properties and the wider Party Wall surveyor south London guide.
What happens after you post
Your verified enquiry is available to the administrator for review. Invitations are not currently available. In a later comparison service, a participating surveyor would receive only the outward postcode and a restricted brief before an authorised introduction.
When comparison is available, complete quotes and the surveyor’s private profile can be shown on your private customer page. Availability varies, so a request may receive several quotes, one, or none. Submission does not guarantee an invitation, quote or introduction.
If introductions are available and the administrator records your chosen introduction, only that surveyor receives your full contact and property details. FindTheSurveyor charges neither party a fee. You pay the professional fee directly to the surveyor.