Householder planning permission in Bromley: 79.8% approved

Why does Bromley refuse more householder applications than the London average?

Bromley approved 79.8% of 4,706 householder decisions against 83.0% across London, and 5.1% of its decisions ran past thirteen weeks. It carries 69 conservation areas covering 1,302 hectares, second only to Richmond upon Thames, and that is the commonest reason a Bromley scheme loses its permitted development rights.

Sources: decision figures from MHCLG District Planning Application Statistics (PS1 and PS2), twelve quarters to March 2026; conservation areas from planning.data.gov.uk, retrieved 1 September 2026, with hectares computed from the published boundaries; appeals from Planning Inspectorate casework decided 2016–2026. Open Government Licence v3.0. Of Bromley’s decided householder appeals, 12.8% involved a listed building — the third highest share in London.

Planning in Bromley — what you need to know

Bromley is the largest London borough by area, and a substantial part of it is Metropolitan Green Belt rather than suburb. That single fact reorganises the planning question: on a Green Belt plot the test is not whether your extension is well designed but whether it is inappropriate development, which is a different and much harder hurdle. Establishing which side of the boundary a property sits on is the first thing worth doing here.

Size changes the character of the caseload. Bromley covers 150 square kilometres, more than three times Sutton or Brent, and its designations are correspondingly large: the Chislehurst conservation area alone runs to 591.5 hectares, with Crystal Palace Park at 81.5 and the Bromley, Hayes and Keston Commons at 59.9 (planning.data.gov.uk conservation area register, retrieved 1 September 2026). It also holds 412 listed buildings, eight of them Grade I and 23 Grade II* (Historic England, via the MHCLG Planning Data Platform, retrieved 2 September 2026). The borough covers BR1 to BR8 plus SE6, SE9, SE12, SE20 and SE26.

The houses are bigger here than the London norm and the market says so. Detached houses in Bromley sold at a median of £910,000 across 737 transactions in 2025, semis at £625,000 across 1,238 and terraces at £513,375 across 1,066 (HM Land Registry Price Paid data, 2025 completions). A borough where semis outsell terraces is a borough where the standard job is not a side-return infill but a wide rear or a two-storey addition on a plot that has room for it — and where the constraint that bites is the gap to the flank boundary and the trees standing in it, rather than the depth of the projection.

With 48 designated conservation areas and no current Article 4 Directions, Bromley is the largest London borough by area and a great deal of it is Metropolitan Green Belt, so the borough's planning character is set by two things a homeowner can check on a map: whether the address sits inside one of the 48 conservation areas, and whether it sits inside the Green Belt. Outside both, and with no Article 4 Direction in force, permitted development rights here are among the least restricted in London.

We prepare planning and building regulations drawings across every Bromley postcode. The question we settle first on a Bromley job is which of three regimes the site sits in: ordinary suburb, conservation area, or Green Belt. They are not degrees of the same thing. On Green Belt land the test is proportionality against the original dwelling and openness, and a well-designed scheme can still fail it. Our technologists are MCIAT chartered, and that assessment happens before the survey is booked rather than after the design is drawn.

Article 4 Directions in Bromley

There is no borough-wide Article 4 Direction in Bromley touching ordinary householder work — no loft conversion, rear extension or outbuilding loses its permitted development rights simply for being in this borough. That is genuinely unusual for London and it shows up in the statistics rather than only in the policy documents.

Here is where it shows. Of the 377 larger rear extension notifications Bromley determined in the three years to March 2026, 320 — 84.9% — were found not to need prior approval at all, the highest share of the 27 London boroughs for which the measure can be calculated, against 61.9% pooled across the capital (MHCLG planning application statistics, PS1, retrieved 1 September 2026). Only 37 were refused. So a deep single-storey rear extension that meets the national criteria on size, height and position will usually pass here without an argument. What we still recommend is the £274 Lawful Development Certificate, because ‘nobody objected’ is not a document and a buyer’s solicitor will want one.

The absence of a direction is not the absence of constraint. A house inside any of Bromley’s conservation areas stands on article 2(3) land, which withdraws permitted development for extensions beyond a side elevation, for rear extensions of more than one storey, and for cladding or render. Trees are the other quiet constraint: the Planning Inspectorate decided 38 tree preservation order appeals from this borough between 2016 and 2026 and allowed nine of them (Planning Inspectorate appeal casework, retrieved 1 September 2026), which is a larger volume of tree disputes than most London boroughs generate at all.

Conservation areas in Bromley

Bromley has 48 designated conservation areas. Notable conservation areas include:

• Bromley Town
• Chislehurst
• Beckenham
• Keston
• Bickley

Bromley carries 48 conservation areas, more than any other borough in this guide, and they sit almost entirely over its town centres and older village cores — Chislehurst, Keston and Bickley are assessed on their large detached plots and mature tree cover, where the boundary treatment and the gap between houses matter more to an officer than the elevation itself. Beckenham and Bromley Town are tighter Edwardian and Victorian street patterns judged on frontage rhythm. What designation withdraws in all of them:

• No cladding, stone, artificial stone, pebble dash, render, timber, plastic, or tile to any external wall without planning permission
• No side extensions under Permitted Development
• Rear extensions are limited and may require planning permission
• Dormer loft conversions facing the highway require planning permission
• Satellite dishes on front elevations or chimneys are not permitted
• Demolition of gates, walls, fences, or other boundary treatment requires planning permission

Forty-eight conservation areas, most of them wrapped around the town centres, and no borough-wide Article 4 Direction. Bromley delegated 97.7% of its decisions to officers (MHCLG planning statistics, retrieved 1 September 2026). The practical effect of the Green Belt plus the designations is that this borough has two quite separate planning regimes running at once, and the advice that applies in one is actively misleading in the other. We confirm which applies before design.

Popular projects in Bromley

Chislehurst and Bickley detached houses, Beckenham Edwardians, Victorian stock in Bromley town, and Green Belt beyond. The borough took 6,712 planning decisions in three years, the fourth-largest caseload in London, approving 76.1% (MHCLG planning statistics, retrieved 1 September 2026). New-dwelling proposals ran at 49.8% — about half — and in Bromley the reason is frequently the Green Belt designation rather than the design, which is why a scheme that would pass in Beckenham can fail a mile away.

Two-storey extensions

The semi-detached and detached housing stock in Bromley is well suited to two-storey rear extensions, which almost always require planning permission. A two-storey extension can add a larger kitchen-diner at ground floor and an additional bedroom and bathroom above. Bromley decides more householder applications than any other borough covered here — 4,706, of which 950 were refused (MHCLG planning statistics, retrieved 1 September 2026) — and it is also the slowest of them, with 5.1% of decisions running beyond thirteen weeks. On the generous plots in Chislehurst and Bickley the usual refusal ground is not bulk but the effect on the gap between dwellings and on protected trees, so a two-storey scheme here is decided as much by the tree survey and the flank separation as by its footprint.

How much do planning drawings cost in Bromley?

The council charge for a householder application is the same here as everywhere in England; what varies is the work behind it. A Green Belt site needs a design and access case that a suburban plot in Bromley town does not, and 2,011 applications across the borough had an extension of time agreed — 30.0% of all decisions (MHCLG planning statistics, retrieved 1 September 2026) — so the timetable can be longer than the fee suggests. We quote one fixed figure covering the whole set, near 30% below the London architect rate.

We include a measured survey, existing and proposed plans, elevations, and a site plan — everything required for a valid planning submission to Bromley Council. Our fees are 30% below typical London architect rates for the same scope of work. Bromley approved 79.8% of its householder applications and decided 89.7% within the statutory eight weeks (MHCLG planning statistics, retrieved 1 September 2026); with 5.1% running past thirteen weeks, the tail here is longer than most London boroughs, which is an argument for getting the submission right first time rather than correcting it later.

Ask for the proposed-works form of the Lawful Development Certificate. On Green Belt land the certificate is worth more than usual, because whether a thing was permitted development is exactly the question that gets revisited on such a plot. Bromley granted 1,675 such certificates across three years (MHCLG planning statistics, retrieved 1 September 2026).

Our experience in Bromley

We cover all Bromley postcodes: BR1, BR2, BR3, BR4, BR5, BR6, BR7, BR8, SE6, SE9, SE12, SE20, SE26. Whether your property is in a conservation area, affected by an Article 4 Direction, or in an unrestricted residential street, we have experience with Bromley Council and understand the borough's planning policies.

Our MCIAT chartered technologists take a project from the measured survey through to submission and handle the correspondence afterwards. Getting it right at the first attempt matters more here than in a faster borough: Bromley decided only 72.7% of its minor applications inside the statutory period, the third-lowest share of the 33 London authorities (MHCLG planning application statistics, twelve quarters to March 2026, retrieved 1 September 2026). A resubmission does not go to the back of a short queue in this borough.

We also work in Bromley's neighbouring boroughs:

What are the odds of approval in Bromley?

79.8%of householder applications approved in Bromley

4,706householder decisions in three years

89.7%decided within eight weeks

1,675certificates of lawful development issued

Bromley is generous with permitted development and ordinary with planning permission. Of 4,706 householder decisions in the three years to March 2026, 3,756 were approved and 950 refused — 79.8%, against 83.0% London-wide. Nothing in that number is a local bias to plan around. The scheme and the drawings decide it.

The prior-approval figures are where the borough separates itself. Bromley determined 377 larger rear extension notifications and concluded that 320 of them did not need prior approval at all — 84.9%, the highest share of the 27 London boroughs for which the figure can be calculated, against a London pooled 61.9%. Twenty were granted and 37 refused. If your extension sits inside the national criteria, this is one of the easiest boroughs in London to build it in.

Speed is the weaker half of the record. Bromley settled 89.7% of householder applications inside eight weeks, below the London figure of 92.5%, and only 72.7% of its minor applications inside the statutory period — third lowest of the 33 authorities. It also carries the largest appeal caseload of any borough in this guide: the Inspectorate decided 1,113 householder appeals from Bromley between 2016 and 2026 and allowed 459, or 41.2%, against 35.6% across England. That is a measure of how well its refusals survive scrutiny, not of how likely you are to be approved first time.

The council recorded 1,675 certificate of lawful development applications over the same three years. That is the route for work that is already permitted development: not a permission, but proof you did not need one, at £274 against the £548 householder fee. The statistical return records no granted-or-refused split for certificates, so the number describes how heavily the route is used and nothing else.

Source: the quarterly PS1 and PS2 planning application returns Bromley files with MHCLG under the District Planning Application Statistics collection. Every figure counts a decision the council issued during the three financial years ending 31 March 2026; none of them counts an application. Open Government Licence v3.0.

Frequently asked questions