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Planning application drawings for a Langley St Mary's home — scaled plans and elevations ready for submission
Langley St Mary's · Planning Application Drawings & Submission

Planning application drawings in Langley St Mary's

The full drawing set for a Langley St Mary's application — location and block plans, existing and proposed floor plans, elevations and sections, drawn to Slough Borough Council's validation checklist so the pack is accepted first time, delivered in days and revised free until your decision, with a free approval-odds check first.

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Langley St Mary's planning decisions and design rules

Slough Borough Council granted 82% of the householder planning decisions it made in its latest published year — 5 points below the 87% England-wide householder average. Langley St Mary's contains St Bernard's School, St Mary's Church, Langley conservation areas (St Mary's Church, Langley designated 1977), so materials, fenestration and roof form are assessed against the appraisal, which is where a policy-literate drawing pack earns its keep. Its dominant interwar (1918–1939) and postwar (1945–1970) housing stock sets the design brief on most streets.

Before permission is required, Class B allows 40m³ of added loft volume on a terrace and 50m³ on a semi or detached house, and Class A allows a 3m single-storey rear extension on a terrace or 4m on a detached house. In conservation areas such as St Bernard's School and St Mary's Church, Langley those rights are removed, so we confirm your exact address before a line is drawn. A validated householder application in Langley St Mary's is determined against an 8-week statutory target.

St Bernard's School (designated conservation area) and St Mary's Church, Langley (conservation area designated in 1977) — these are the Langley St Mary's pockets our drawings cover most. Heritage designations here include St Bernard's School and St Mary's Church, Langley. Slough Borough Council weighs each proposal against the adopted Slough local plan and Slough Borough Council's design guidance for householder work, where the 2,090 homes here are 36% 1955-1964, 10% 1930-1939, 9% 1965-1972, which is what sets the realistic roof and rear-projection options. On roofs the borough is shallow gabled roofs typical of that period's building and hipped roofs with shallow pitches typical of 1930s building, over late-1950s and early-1960s houses (36% of 2,090 homes), 1930s semi-detached and detached houses (10%) and late-1960s and early-1970s houses (9%).

Why a Langley St Mary's scheme is judged on Langley St Mary's terms

What is permitted in Langley St Mary's turns on designation first, so that is where we start: St Bernard's School (designated conservation area) and St Mary's Church, Langley (conservation area designated in 1977). Inside those boundaries permitted development is curtailed and Slough Borough Council assesses materials, window detail and roof form against the area's own appraisal, so a scheme that would be waved through two streets away can need a full application here.

No Article 4 direction is recorded for Slough Borough Council, but Langley St Mary's's 2 conservation areas still limit permitted development on those streets.

On stock, Langley St Mary's is late-1950s and early-1960s houses (36% of 2,090 homes), 1930s semi-detached and detached houses (10%) and late-1960s and early-1970s houses (9%) — which is why shallow gabled roofs typical of that period's building and hipped roofs with shallow pitches typical of 1930s building govern what a loft or rear projection can realistically be. Slough Borough Council decided 417 householder applications in the latest published year and granted 82%, with 42% issued inside the eight-week target. We draw to that record rather than to a national average.

The full build-period split for Langley St Mary's runs pre-1900 1% (30 homes), 1900-1918 1% (20 homes), 1919-1929 2% (50 homes), 1930-1939 10% (210 homes), 1945-1954 0% (10 homes), 1955-1964 36% (760 homes), 1965-1972 9% (190 homes), 1973-1982 7% (140 homes), 1983-1992 3% (70 homes), 1993-1999 0% (10 homes) and 2000-2008 8% (160 homes). That distribution is why pre-1900 detailing dominates the drawings here, and it is measured from council-tax records rather than assumed from the street name.

Slough Borough Council also decides for Colnbrook & Poyle, so a decision in Langley St Mary's sits inside a wider pattern of decisions we track across the same authority — useful when an officer cites a precedent from the next area over.

Langley St Mary's by the published data

Published figures for Langley St Mary's and Slough Borough Council. These are the numbers that decide what is realistic on your street, so we work from them rather than from national averages.

MeasureLangley St Mary's
Dwellings recorded2,090
Built pre-190030 (1%)
Built 1900-191820 (1%)
Built 1919-192950 (2%)
Built 1930-1939210 (10%)
Built 1945-195410 (0%)
Built 1955-1964760 (36%)
Built 1965-1972190 (9%)
Built 1973-1982140 (7%)
Built 1983-199270 (3%)
Built 1993-199910 (0%)
Built 2000-2008160 (8%)
Built before 19192%
Built 1919–193912%
Built 1945–200864%
Conservation areas in Langley St Mary's2 (St Bernard's School, St Mary's Church, Langley)
Conservation areas district-wide5
Article 4 directions recorded0
Householder applications decided417
Householder applications granted82%
Decided within 8 weeks42%

Dwelling stock from VOA council-tax data at 31 March 2025; conservation-area and Article 4 counts from planning.data.gov.uk (MHCLG); decision figures are Slough Borough Council's own, from MHCLG live table PS2 for the year to 31 March 2026.

What goes in a Langley St Mary's planning application

Whatever you are building, Slough Borough Council decides it from the same core set. A location plan at 1:1250 fixes the site on the map with the red-line boundary; a block plan at 1:500 shows the property in its plot; then existing and proposed floor plans and elevations at 1:100 or 1:50 show the house as it is and as it will be. Larger schemes add a section and, where policy requires, a design and access statement. Miss one and the application is returned invalid before an officer has looked at it.

The drawings are also the argument. Slough Borough Council assesses each proposal against the adopted Slough local plan and Slough Borough Council's design guidance for householder work, and the elevations are where the case is won or lost — ridge and eaves heights, window positions, materials and how the change reads from the street. On Langley St Mary's's stock, which runs to late-1950s and early-1960s houses (36% of 2,090 homes), 1930s semi-detached and detached houses (10%) and late-1960s and early-1970s houses (9%), the same scheme is drawn differently to answer the concerns officers raise here. Langley St Mary's contains St Bernard's School, St Mary's Church, Langley conservation areas (St Mary's Church, Langley designated 1977), so materials, fenestration and roof form are assessed against the appraisal, so the pack is built to pre-empt exactly that.

Where the property sits in a conservation area — St Bernard's School and St Mary's Church, Langley among Langley St Mary's's — validation is stricter still, often demanding heritage detail and sometimes additional plans. No Article 4 direction is recorded for Slough Borough Council, but Langley St Mary's's 2 conservation areas still limit permitted development on those streets. We confirm the designation before drawing so the pack meets the higher bar first time.

Planning drawing package prepared for a Langley St Mary's application

What drawings do I need for a planning application in Langley St Mary's?

Slough Borough Council validates against a published checklist before it assesses anything. A typical householder application needs each of these, correctly scaled and labelled:

  • A location plan at 1:1250 with the application site edged in red and any other land you control edged in blue
  • A block or site plan at 1:500 showing the property, its boundaries and the position of the works
  • Existing floor plans and elevations at 1:100 or 1:50, showing the house before any change
  • Proposed floor plans and elevations at the same scale, with a scale bar and north point
  • A design and access statement where Slough Borough Council requires one — larger schemes and most work in a conservation area

Langley St Mary's planning decisions — live from council data

Below is Slough Borough Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Slough Borough Council granted 82% of its householder applications in the year to 31 March 2026, and St Bernard's School shapes what is approved here. A complete, correctly scaled pack that answers those concerns on the elevations is validated faster and refused less often than one that leaves them for the officer to raise.

Source: MHCLG planning application statistics (householder decisions, England, 1 April 2025 - 31 March 2026). Compare every borough on our London approval-rate league table.

83%householder applications approved in Slough
87%national average — Slough is 4 points below the national average

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Why Langley St Mary's applications get returned or refused

Two different things sink an application, and they happen at two different stages. First is validation: a missing block plan, an unscaled elevation, no red line, no north point — Slough Borough Council returns the whole submission and the clock never starts. Getting the pack right at this stage is purely mechanical, and it is where a lot of self-submitted Langley St Mary's applications lose weeks. We draw to the checklist so this never happens.

Second is the planning judgement itself, once the pack is valid. The 2,090 homes here are 36% 1955-1964, 10% 1930-1939, 9% 1965-1972, which is what sets the realistic roof and rear-projection options. Across St Bernard's School and St Mary's Church, Langley the recurring refusals are about scale, overlooking and how the proposal sits against its neighbours — all of which are settled on the drawings. We draw the scheme to answer them before submission rather than after a refusal.

Scaled architect drawings for a Langley St Mary's planning application

Applications we draw across Langley St Mary's

The application pack is the same discipline whatever the project. A few of the Langley St Mary's neighbourhoods and property types we prepare drawings for most often:

St Bernard's School

Planning drawings for St Bernard's School's designated conservation area — scaled, validation-ready and drawn to Slough Borough Council's guidance.

St Mary's Church, Langley

Planning drawings for St Mary's Church, Langley's conservation area designated in 1977 — scaled, validation-ready and drawn to Slough Borough Council's guidance.

Which application do I make in Langley St Mary's?

The route decides what Slough Borough Council needs and how long it takes. This is how the common Langley St Mary's routes compare.

RouteWhen it appliesCore drawingsTypical decision
Householder applicationExtensions and alterations to a single houseLocation, block, existing & proposed plans and elevationsAbout 8 weeks
Full applicationFlats, new units, changes of useAs householder plus site plan and often a section8–13 weeks
Lawful development certificateConfirming a scheme is permitted developmentExisting & proposed plans and elevations to prove PD limitsAbout 8 weeks
Prior approvalLarger single-storey rear extensionsPlans and elevations plus neighbour notificationAbout 6 weeks

In a conservation area such as St Bernard's School and St Mary's Church, Langley, householder permitted-development rights are often restricted, so a full application and heritage detail may be required.

Four steps to a validated Langley St Mary's application

A fixed process built around how Slough Borough Council validates and decides — most drawing sets are submission-ready within seven days of survey.

  1. 1

    Free approval check

    Send us your Langley St Mary's postcode and what you want to build. We confirm your conservation and Article 4 status, tell you which application route applies, and score your odds against live Slough Borough Council decisions.

  2. 2

    Measured survey

    We measure the property and plot so the existing plans and elevations are accurate to the millimetre — the base every proposed drawing and every officer judgement is built on.

  3. 3

    Drawing set & statement

    Chartered designers produce the full validation pack — location and block plans, existing and proposed plans, elevations, any section and a design and access statement — drawn to Slough Borough Council's checklist.

  4. 4

    Submission & follow-through

    We lodge the application on the Planning Portal, manage validation and case-officer queries, and revise the drawings free until Slough Borough Council issues its decision.

Frequently asked questions

What drawings do I need for a planning application in Langley St Mary's?

Slough Borough Council validates a householder application against a set list: a location plan at 1:1250 with a red-line boundary, a block plan at 1:500, and existing and proposed floor plans and elevations at 1:100 or 1:50, each with a scale bar and north point. Larger schemes and most conservation-area work also need a design and access statement. If any of these is missing or unscaled the application is returned invalid before it is assessed. This applies to your Langley St Mary's address specifically.

Why do Langley St Mary's planning applications get returned as invalid?

Almost always because the drawing pack is incomplete or wrongly scaled — a missing block plan, an elevation with no scale, no red line on the location plan, no north point. Slough Borough Council checks the pack against its validation list before an officer ever assesses the scheme, so these purely technical gaps cost weeks. Drawing to the checklist from the outset is the simplest way to avoid a return. This applies to your Langley St Mary's address specifically.

Can you submit the Langley St Mary's planning application for me?

Yes. We prepare the full drawing set, lodge it on the Planning Portal on your behalf, pay the Slough Borough Council fee where you prefer us to, and then manage validation and case-officer questions through to the decision. You get the reference number and updates without dealing with the portal or the council yourself. This applies to your Langley St Mary's address specifically.

How long does Slough Borough Council take to decide an application?

A householder application is a statutory eight weeks from validation, and a full application eight to thirteen weeks depending on scale. The date that matters is validation, not submission — an invalid pack never starts the clock. Because we draw to Slough Borough Council's checklist the application validates quickly, so the statutory period begins without the delay a returned pack causes. This applies to your Langley St Mary's address specifically.

Do I need planning drawings if my project is permitted development in Langley St Mary's?

You do not strictly need a planning application, but scaled existing and proposed drawings are still worth having: a lawful development certificate from Slough Borough Council proves the scheme is permitted development, which lenders and buyers increasingly ask for, and your builder needs the drawings to price and build. In a conservation area such as St Bernard's School and St Mary's Church, Langley, permitted-development rights are often removed, so a full application may be needed after all — we confirm which before you commit. This applies to your Langley St Mary's address specifically.

How much do planning application drawings in Langley St Mary's cost?

We price each Langley St Mary's job individually — the scope of the survey and the size of the drawing set vary from a simple rear extension to a whole-house scheme — and send a fixed, no-obligation quote within one working day. It covers the full validation pack with free revisions until Slough Borough Council decides. The Slough Borough Council application fee is separate and paid to the council. Call 020 7864 7245 to start.

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