Party Wall Surveyor Croydon: How to Request Quotes
Post a Party Wall job for a property in the London Borough of Croydon. The administrator reviews the complete enquiry and invites suitable qualified surveyors to provide independent quotes.
Post your Croydon Party Wall job — free
Basement dwellings are prohibited where flood risk is highest
Croydon has no basement policy in the sense that inner London boroughs have one. There is nothing controlling excavation depth, basement storeys, garden coverage or construction method. Searching the adopted plan returns no occurrence of “subterranean” at all.
What it has instead is a flooding rule with real teeth.
Policy DM25 deals with sustainable drainage and reducing flood risk. Its supporting Table 8.1 provides that basement dwellings will not be permitted in Flood Zones 3a and 3b — an outright prohibition rather than a set of conditions. And paragraph 8.34 states:
Where a site is at risk of groundwater, the Council will request a Basement Impact Assessment as part of the Flood Risk Assessment for any basement application. These assessments should be informed by ground investigations to help assess the flood risks to basement development.
Note where the assessment sits: it is part of a Flood Risk Assessment, requested where groundwater risk exists, rather than a standing requirement for every basement.
The reason is recorded in the plan itself, at paragraph 8.35, which notes that Croydon is ranked by the Department for Environment, Food and Rural Affairs as the fourth settlement in England most susceptible to surface water flooding.
For an adjoining owner that matters in a specific way. Groundwater is exactly the mechanism by which excavation next door affects your property, and it is the subject a competent schedule of condition and award will address. Where the council requires ground investigations at planning stage, those results exist and are worth asking for.
The largest borough in London, and only thirteenth for extensions
At Census 2021 Croydon recorded 152,946 households — more than any other London borough, ahead of Barnet on 148,917:
- 44,285 in a purpose-built block of flats or tenement
- 37,841 in a semi-detached house
- 35,580 in a terraced house
- 18,714 in a detached house
- 12,973 in part of a converted or shared house
- 2,238 in a commercial building
- 1,178 in part of another converted building
Comparing all 33 boroughs, Croydon has the largest number of terraced houses in London and the second largest number of houses overall, behind Bromley by fewer than a thousand.
Yet in the year ending March 2026 it determined 805 householder development decisions — 13th of 33 boroughs. Bromley, with slightly fewer houses, determined 1,538, nearly twice as many.
So the largest borough by households is mid-table for domestic extension work. That is worth stating plainly rather than describing Croydon as busy, because it is not. Alongside those 805 decisions it determined just 14 listed building consents to alter or extend. Both are decisions rather than grants.
And it is not a Victorian borough, despite its size. Croydon recorded 32,240 properties built before 1900, which ranks 13th in London — Westminster, Kensington and Chelsea and Lambeth each hold well over that. Its larger blocks are interwar: 39,460 dwellings built between 1919 and 1939, from a total of 168,250 as at 31 March 2025. 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.
The terraced and semi-detached stock together is what shapes party wall work here — over seventy thousand households in dwellings that share a flank wall.
The extension policy points at a document that no longer exists
Policy DM10 governs design and character, and its householder provision reads:
Where an extension or alteration is proposed, adherence to Supplementary Planning Document 2 Residential Extensions and Alterations or equivalent will be encouraged to aid compliance with the policies contained in the Local Plan.
That document is no longer published. Its successor, the Croydon Suburban Design Guide, was revoked. The council’s own statutory notice records that on 25 July 2022 it agreed the revocation, and that the guide “will no longer be used as material guidance for determining planning applications with immediate effect from the 26th July 2022”.
The council’s current list of supplementary planning documents contains no borough-wide householder design document at all. The only adopted design guidance touching extensions is the Conservation Area General Guidance SPD of 2013, which is entirely qualitative — it expects side extensions to be set back so they appear subservient, treats front extensions in conservation areas as generally unacceptable, and says permission is unlikely for hip to gable extensions.
Policy DM10 does contain a few numeric standards, though none is an extension dimension: no direct overlooking of private outdoor space within 10 metres perpendicular to a rear elevation, a minimum retained garden of 10 metres length and the smaller of half the garden or 200 square metres after subdivision, and minimum balcony and amenity space sizes.
The practical position is that Croydon currently publishes no numeric standards for extension depth, boundary distance or roof form. A neighbour hoping the planning system has already tested a scheme against a published yardstick will not find one.
A replacement Local Plan has been through examination — submitted in November 2024, with hearings concluded and the inspectors confirming in early 2026 that it may progress — but main modifications have still to go to consultation, so the 2018 plan governs.
Only one Article 4 direction reaches extensions
Croydon operates a borough-wide Article 4 direction, and it is easy to assume it restricts building work. It does not. Its schedule withdraws only Class L(b) of Part 3 — changes of use between dwellinghouses and houses in multiple occupation. It came into force on 28 January 2020 and touches no extension or roof right anywhere.
Among the conservation area directions, the one that does reach householder building work is Chatsworth Road. It withdraws Part 1 Classes A, C, D and F — the enlargement, improvement or other alteration of a dwellinghouse, other roof alterations, porches and hard surfaces — together with Part 2 Classes A, B and C covering enclosures, highway access and exterior painting, and Part 40 Class A covering solar equipment. It was made under the Common Seal on 16 January 2015, confirmed on 21 May 2015, and came into force on 21 January 2016.
The Waldrons direction is much narrower, reaching only hard surfaces and means of enclosure across a short list of numbered properties, and does not withdraw extension rights. The remaining directions concern enclosures, highway access, temporary uses or caravans.
The council states there are currently 21 conservation areas in Croydon. Its online directory lists 20 entries, because two separately designated areas are shown together.
The council says almost nothing about the Act
Searching the adopted plan, the emerging plan and the conservation area guidance for “party wall” returns nothing at all. The council’s building control pages do not mention it either.
The single reference found anywhere in the council’s published material is in a guide for council housing tenants considering home improvements, which advises that work on party walls and boundaries may be subject to the Act and that the tenant is responsible for damage to their own or a neighbour’s property.
That silence is worth knowing rather than worrying about. The Act applies in Croydon exactly as it applies everywhere in England and Wales, whether or not the council mentions it. But it does mean the planning process here will not prompt you about it, and the guide to whether a surveyor is needed at all covers the questions the council does not answer.
Explain the property and proposed work
Provide:
- the full property address;
- whether the property is detached, semi-detached, terraced or a flat;
- which walls are shared, and with whom;
- whether the works involve a flank wall, chimney breast, roof line or dormer;
- whether excavation is proposed, how deep, and how close to a neighbouring building;
- whether the property lies in a flood zone or an area of known groundwater risk;
- whether the property lies in a conservation area, and particularly in Chatsworth Road;
- 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 guide to whether a surveyor is needed at all covers the prior question, and the Party Wall surveyor guide explains when a surveyor may be needed. 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
The administrator reviews each complete enquiry before deciding whether to invite suitable qualified surveyors. Before selection, any invited surveyor receives only the outward postcode and a restricted, non-identifying brief.
If a quote is received and passes the administrative-completeness check, it is shown in the authenticated customer portal with the surveyor’s private documentary profile. Availability varies, so a request may receive several quotes, one, or none. Submission does not guarantee an invitation, quote or introduction.
If the administrator makes an 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.