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Porch extension plans in Arundel & Walberton — a front porch built onto the principal elevation of a house
Arundel & Walberton · Porch Drawings & Planning

Porch extension plans in Arundel & Walberton

Front-porch drawings for Arundel & Walberton homes — checked against the Class D permitted-development limits, drawn to Arun District Council's frontage guidance, delivered in days and revised free until your decision, with a free approval-odds check first.

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Arundel & Walberton householder planning by the numbers

Arun District Council granted 94% of the householder planning decisions it made in its latest published year — 7 points above the 87% England-wide householder average. Arundel & Walberton contains Lyminster, Poling, Walberton Village and Walberton Green conservation areas (Lyminster designated 1998), so materials, fenestration and roof form are assessed against the appraisal, which is where a policy-literate drawing pack earns its keep. Its dominant Victorian (1837–1901) and postwar (1945–1970) housing stock sets the design brief on most streets.

Under Class B, a rear dormer stays permitted development up to 40m³ of added roof volume on a terrace or 50m³ on a semi-detached or detached house, while Class A allows a single-storey rear extension of 3m beyond the original rear wall on a terrace and 4m on a detached house before a full application is needed. In conservation areas such as Lyminster, Poling and Walberton Village and Walberton Green those rights are removed, so we confirm your exact address before a line is drawn. A validated householder application in Arundel & Walberton is determined against an 8-week statutory target.

Lyminster (conservation area designated in 1998), Poling (conservation area designated in 1998), Walberton Village and Walberton Green (designated conservation area), Burpham (civil parish within Arundel & Walberton), Houghton (civil parish within Arundel & Walberton), Lyminster and Crossbush (civil parish within Arundel & Walberton), Madehurst (civil parish within Arundel & Walberton), Poling (civil parish within Arundel & Walberton) and Slindon (civil parish within Arundel & Walberton) — these are the Arundel & Walberton pockets our drawings cover most. Heritage designations here include Lyminster, Poling and Walberton Village and Walberton Green. Arun District Council weighs each proposal against Arun District Council's development plan and the design policies it applies to householder applications, where the 3,980 homes here are 26% pre-1900, 8% 1945-1954, 8% 1955-1964, which is what sets the realistic roof and rear-projection options. On roofs the borough is steeply pitched slate roofs, valley gutters and party parapets typical of pre-1900 building and simple gabled and hipped roofs typical of early postwar building, over Victorian and earlier houses (26% of 3,980 homes), early postwar houses (8%) and late-1950s and early-1960s houses (8%).

What actually constrains a project in Arundel & Walberton

Arundel & Walberton's designated heritage is specific, and it is the first thing we check against your address: Lyminster (conservation area designated in 1998), Poling (conservation area designated in 1998) and Walberton Village and Walberton Green (designated conservation area). Inside those boundaries permitted development is curtailed and Arun District 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.

Beyond the designated areas, Arundel & Walberton takes in Burpham, Houghton, Lyminster and Crossbush, Madehurst, Poling and Slindon. No Article 4 direction is recorded for Arun District Council, but Arundel & Walberton's 3 conservation areas still limit permitted development on those streets.

On stock, Arundel & Walberton is Victorian and earlier houses (26% of 3,980 homes), early postwar houses (8%) and late-1950s and early-1960s houses (8%) — which is why steeply pitched slate roofs, valley gutters and party parapets typical of pre-1900 building and simple gabled and hipped roofs typical of early postwar building govern what a loft or rear projection can realistically be. Arun District Council decided 453 householder applications in the latest published year and granted 94%, with 99% issued inside the eight-week target. Those are the numbers our drawings are prepared against.

The full build-period split for Arundel & Walberton runs pre-1900 26% (1,020 homes), 1900-1918 4% (170 homes), 1919-1929 7% (270 homes), 1930-1939 5% (210 homes), 1945-1954 8% (330 homes), 1955-1964 8% (310 homes), 1965-1972 4% (160 homes), 1973-1982 5% (210 homes), 1983-1992 7% (280 homes), 1993-1999 5% (210 homes) and 2000-2008 5% (210 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.

Arun District Council also decides for Angmering & Findon, Barnham, Beach, Bersted, East Preston, Hotham, Marine and Orchard, so a decision in Arundel & Walberton 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.

Arundel & Walberton in numbers — housing stock and planning decisions

Published figures for Arundel & Walberton and Arun District Council. These are the numbers that decide what is realistic on your street, so we work from them rather than from national averages.

MeasureArundel & Walberton
Dwellings recorded3,980
Built pre-19001,020 (26%)
Built 1900-1918170 (4%)
Built 1919-1929270 (7%)
Built 1930-1939210 (5%)
Built 1945-1954330 (8%)
Built 1955-1964310 (8%)
Built 1965-1972160 (4%)
Built 1973-1982210 (5%)
Built 1983-1992280 (7%)
Built 1993-1999210 (5%)
Built 2000-2008210 (5%)
Built before 191930%
Built 1919–193912%
Built 1945–200843%
Conservation areas in Arundel & Walberton3 (Lyminster, Poling…)
Conservation areas district-wide23
Article 4 directions recorded0
Householder applications decided453
Householder applications granted94%
Decided within 8 weeks99%

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 Arun District Council's own, from MHCLG live table PS2 for the year to 31 March 2026.

Why a porch is judged on the Arundel & Walberton street, not the plan

A porch is the smallest thing most people build and the most visible. It sits on the principal elevation, so Arun District Council reads it against the rhythm of the whole street rather than against your own house alone. Arundel & Walberton is largely Victorian and earlier houses (26% of 3,980 homes), early postwar houses (8%) and late-1950s and early-1960s houses (8%), and where a run of houses shares one front-door detail, a porch that ignores it stands out from fifty metres away.

The three Class D numbers do most of the work: 3 square metres of external floor area, 3 metres of height, and a 2-metre stand-off from any boundary that fronts a highway. That last one catches more porches in Arundel & Walberton than the other two put together, because front gardens are shallow and the boundary is measured to the highway line, not to the kerb. We measure it on site and set the porch inside the limit, or we tell you honestly that it needs an application.

In Arundel & Walberton's conservation areas — Lyminster, Poling and Walberton Village and Walberton Green among them — a porch is assessed on materials, roof form and how the door surround is treated. No Article 4 direction is recorded for Arun District Council, but Arundel & Walberton's 3 conservation areas still limit permitted development on those streets.

Porch design drawing prepared for a Arundel & Walberton house frontage

Does a porch need planning permission in Arundel & Walberton?

Most modest porches are permitted development. You will need to apply to Arun District Council if any of these apply:

  • The external floor area measures more than 3 square metres
  • Any part of the porch stands higher than 3 metres above ground level
  • Any part sits within 2 metres of a boundary that fronts a highway
  • The house is in a conservation area such as Lyminster and Poling, where frontage changes are controlled
  • The building is listed — listed building consent is required whatever the size
  • The porch encloses a shared entrance to flats rather than a single house

Arundel & Walberton porch decisions — live from council data

Below is Arun District Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Arun District Council granted 94% of its householder applications in the year to 31 March 2026, and Lyminster shapes what is approved here. A porch application turns on frontage design and the highway stand-off, so a pack that dimensions both is decided faster than a sketch.

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

94%householder applications approved in Arun
87%national average — Arun is 7 points above the national average

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What porches get approved across Arundel & Walberton

Across Lyminster, Poling and Walberton Village and Walberton Green, the porches that go through are the ones that borrow from the house: the same brick or render, a roof pitched to match, and a door and side-light proportioned to the original opening. On victorian and earlier houses (26% of 3,980 homes), an open-sided canopy is often the better answer than an enclosed porch — it stays clear of the floor-area limit and leaves the frontage legible.

Arundel & Walberton contains Lyminster, Poling, Walberton Village and Walberton Green conservation areas (Lyminster designated 1998), so materials, fenestration and roof form are assessed against the appraisal, which is exactly the sort of local reading a porch has to satisfy. Where the 2-metre highway stand-off cannot be met, we either recess the porch behind the building line or prepare a full householder application with an elevation that shows the porch in the context of its neighbours — the drawing that answers the officer's real question.

Drawing pack for a porch application in Arundel & Walberton

Porch drawings across Arundel & Walberton

We draw porches on every street type in Arundel & Walberton. A few of the areas where porch work comes up most often:

Lyminster

Porch drawings for Lyminster — conservation area designated in 1998 — dimensioned to the Class D limits and drawn to Arun District Council's frontage guidance.

Poling

Porch drawings for Poling — conservation area designated in 1998 — dimensioned to the Class D limits and drawn to Arun District Council's frontage guidance.

Walberton Village and Walberton Green

Porch drawings for Walberton Village and Walberton Green — designated conservation area — dimensioned to the Class D limits and drawn to Arun District Council's frontage guidance.

Burpham

Porch drawings for Burpham — civil parish within Arundel & Walberton — dimensioned to the Class D limits and drawn to Arun District Council's frontage guidance.

Houghton

Porch drawings for Houghton — civil parish within Arundel & Walberton — dimensioned to the Class D limits and drawn to Arun District Council's frontage guidance.

Lyminster and Crossbush

Porch drawings for Lyminster and Crossbush — civil parish within Arundel & Walberton — dimensioned to the Class D limits and drawn to Arun District Council's frontage guidance.

Is your Arundel & Walberton porch permitted development or a full application?

Class D sets three thresholds. This is how the common cases fall either side of them.

Porch typePermitted development?What decides itWhat Arun District Council checks
Open canopy over the doorUsually yes — no enclosed floor areaWhether it is enclosedProjection, materials, roof form
Enclosed porch under 3m²Yes, if under 3m high and 2m from the highway boundaryExternal floor areaHighway stand-off, frontage design
Enclosed porch over 3m²No — full applicationExternal floor areaBulk on the principal elevation
Porch in a conservation areaOnly if it meets Class D and no Article 4 appliesDesignation statusMaterials, door detail, streetscape
Porch on a listed buildingNo — listed building consent requiredListingImpact on special interest

Thresholds from the Town and Country Planning (General Permitted Development) (England) Order 2015, Schedule 2, Part 1, Class D.

Four steps to an approved Arundel & Walberton porch

A fixed process built around how Arun District Council validates and decides frontage work — most porch drawings are submission-ready within seven days of survey.

  1. 1

    Free approval check

    Send us your Arundel & Walberton postcode. We confirm conservation, Article 4 and listing status, measure the front boundary against the 2-metre highway rule, and score your odds against live Arun District Council decisions.

  2. 2

    Measured survey

    We measure the frontage, threshold level, door opening and the distance to the highway boundary — the four numbers a porch application stands or falls on.

  3. 3

    Porch design & drawings

    Chartered designers develop the porch to your brief, either inside the Class D limits or as a full application drawn to Arun District Council's design guidance, with materials and roof form matched to the house.

  4. 4

    Submission & follow-through

    We submit the certificate or application, manage validation and case-officer queries, and revise the drawings free until Arun District Council issues its decision.

Frequently asked questions

Do I need planning permission for a porch in Arundel & Walberton?

Usually not, provided it meets all three Class D limits: no more than 3 square metres of external floor area, no more than 3 metres high, and no part within 2 metres of a boundary fronting a highway. Break any one and you need a householder application to Arun District Council. On designated land, and on listed buildings, the position is different and we check it before drawing. This applies to your Arundel & Walberton address specifically.

How is the 3 square metres measured on a Arundel & Walberton porch?

It is the external floor area — measured to the outside face of the porch walls, not the usable space inside. That catches people out, because a porch that feels small internally can exceed 3 square metres once the wall thickness is counted. We measure and dimension it on the plan so the figure is beyond argument at validation. This applies to your Arundel & Walberton address specifically. Arun District Council is the decision-maker.

What is the 2 metre highway rule for porches in Arundel & Walberton?

No part of a permitted-development porch may be within 2 metres of any boundary of the property that fronts a highway. In Arundel & Walberton this is the limit that most often pushes a porch into a full application, because front gardens are shallow. The measurement is to the boundary line, which is not always where the kerb or the fence sits — we establish it on survey. Arun District Council is the decision-maker.

Can I build a porch in a Arundel & Walberton conservation area?

Yes, but the design bar is higher. Class D is not automatically removed in a conservation area, so a compliant porch can still be permitted development — however Arun District Council will expect materials, roof pitch and door detail to respect the area's character, and an Article 4 direction can remove the right entirely. In Lyminster and Poling we confirm the position on your specific address first. This applies to your Arundel & Walberton address specifically.

Does a porch need building regulations approval in Arundel & Walberton?

A porch is exempt from most building regulations if it is under 30 square metres, at ground level, separated from the house by the existing external door, and any glazing and electrics meet Parts K, N and P. Remove the original front door and the porch becomes part of the heated envelope, at which point insulation and Part L apply. We flag which side of that line your design falls on. This applies to your Arundel & Walberton address specifically. Arun District Council is the decision-maker.

How long does Arun District Council take to decide a porch application?

A householder application runs to an eight-week statutory target, and a lawful development certificate to the same. The realistic risk is not the decision but validation — an incomplete pack is returned rather than determined. We prepare the submission validation-complete and handle officer queries so the timetable holds. This applies to your Arundel & Walberton address specifically. Arun District Council is the decision-maker.

How much do porch plans in Arundel & Walberton cost?

We quote each Arundel & Walberton porch individually, because frontage type and boundary position vary house to house, and send a fixed, no-obligation quote within one working day. It covers the full drawing pack with free revisions until Arun District Council approves. Call 020 7864 7245 to start.

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