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Free 2026 London Planning Report — Northolt UB5

Single-storey rear extension being built on a pebbledashed semi-detached house, with blockwork walls, a steel beam and props in place
UB5 · Northolt · Ealing

Planning and building regulation drawings in Northolt (UB5)

Northolt has a small historic core and a much wider interwar suburb. The historic Village Green sits around St Mary's Church and Court Farm Road, and beyond it the district is mostly 1930s semi-detached and interwar suburban housing. Ealing Road, Church Road and Islip Manor Road are among its streets. Those suburban plots usually come with good-sized rear gardens, which suits single-storey rear extensions and loft conversions. On a semi, the details that shape a design are often the gap beside the house, the line of the neighbouring pair and how close a side wall sits to the boundary.

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  • London Borough of Ealing granted 88% of 993 householder applications
  • Drawings in about 7 days

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Semis share a party wall with one neighbour, so extending sideways raises spacing questions, and anything built on or near the boundary needs thought about access for maintenance and about the neighbour's windows. Work on or close to the shared wall, or excavation near the neighbour's foundations, can bring notice duties under the Party Wall Act, a separate legal process from planning that is worth starting early.

Around the green the position changes. Northolt Village Green is a conservation area, and the older core has listed and locally important buildings, so a house there is judged for its effect on the setting of the church and the green. In a conservation area, roof enlargements, side extensions and rear extensions of more than one storey are not permitted development, cladding is not permitted either, and demolition draws particular care. Outside it, family houses generally start from the ordinary permitted development rights, subject to the conditions that apply to each house. We check which side of that boundary a property falls on before choosing a route.

Planning in Northolt: what to know before you apply

Ealing decides householder schemes with attention to street character, and its conservation areas apply tight control over dormers, materials and front elevations. For UB5 that means the Northolt Village Green designation, where works near St Mary's Church and the green are weighed against their setting. Listed or locally important buildings in the historic core add setting considerations for neighbours too. Ealing also has a borough-wide Article 4 direction on conversions to small houses in multiple occupation, so turning a family house into a shared home for three to six unrelated people needs permission. If a front garden is being paved, hardstanding controls apply in parts of the borough. We confirm each of these against your address first.

Applications are decided by London Borough of Ealing — its planning pages.

Check your route

Does your Northolt project need planning permission?

Route check · Northolt (UB5)

Listed building?
Conservation area?
Likely permitted development — no planning applicationNeeds checking
  • A single-storey rear extension up to 4 m deep on a detached house, or 3 m on any other house, is Class A permitted development subject to the height and materials conditions.
  • An Article 4 direction applies here and may withdraw this freedom — the schedule must be checked before relying on it.
  • One or more constraints are unknown — we check the council's registers as part of the free appraisal.
  • Where permitted development applies, a lawful development certificate proves it for lenders and buyers.

Sources: GPDO 2015, Schedule 2, Part 1 · Planning Portal — common projects · Building Regulations 2010 — when approval is needed

This is a first-pass indication from the national rules, not planning advice for your property. Your council's registers, any Article 4 schedule and the exact dimensions decide it — the free appraisal checks all three before we recommend a route.

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Northolt (UB5) in numbers

What London Borough of Ealing has decided, and what UB5 is built of — the two facts that shape every job here.

Householder planning decisions — London Borough of Ealing

Northolt (UB5) applications are decided by London Borough of Ealing; these are its published householder figures for the last four quarters.

Householder applications decided2025 Q2 to 2026 Q1993
Granted871
Refused122
Grantedof 993 decisions · England 90%88%
Decided within 8 weeksof 421, excluding prior approvals97%

Source: Ministry of Housing, Communities and Local Government (PS2 district planning application statistics). Open Government Licence v3.0 Extracted 2026-09-22.

Permitted development prior approvals — London Borough of Ealing

How the larger-home-extension route has fared with London Borough of Ealing, which decides UB5 notifications.

Larger home extension prior approvals — not required2024 Q2 to 2026 Q1384
Prior approval granted36
Prior approval refused153
Grantedof 189 determined19%

Source: Ministry of Housing, Communities and Local Government (PS1 district planning application statistics). Open Government Licence v3.0 Extracted 2026-09-22.

Planning appeals — London Borough of Ealing

Refusals in UB5 can be appealed to the Planning Inspectorate; this is London Borough of Ealing's householder appeal record.

Householder appeals determined2021–2026204
Allowed90
Allowedof 204 · England 36%44%

Source: Planning Inspectorate appeals casework. Open Government Licence v3.0 Extracted 2026-09-22.

Conservation areas and Article 4 directions — London Borough of Ealing

Register counts for London Borough of Ealing. A count describes what the council has published, never a rank against another council.

Conservation areas in the register28 dated, 1969–200731

Source: MHCLG Planning Data Platform. Open Government Licence v3.0 Extracted 2026-09-22.

What UB5 is built of

Residential building form across Northolt (UB5), from 183 classified buildings — the fact that decides party walls, side returns and loft headroom before any policy does.

Attached on more than one side38%
Attached on one side57%
Detached4%
Median building footprint60 m²
Addresses per buildingAbove about 2 means flats and maisonettes dominate1.45
Buildings classified183

Source: Ordnance Survey National Geographic Database (derived statistics). Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Extracted 2026-09-22.

  1. Day 0Measured survey of your Northolt property — or your existing plans if you have them.
  2. About 7 daysDrawings issued for your approval. Free redraws until you are happy.
  3. SubmissionWe validate against London Borough of Ealing’s checklist and submit on your behalf.
  4. Council: 8-week targetHouseholder applications carry an 8-week statutory target. London Borough of Ealing decided 97% of 421 recent householder applications inside it.

Source: Ministry of Housing, Communities and Local Government (PS2 district planning application statistics). Open Government Licence v3.0 Extracted 2026-09-22.

Neighbourhoods

Streets and neighbourhoods in UB5

Northolthistoric village core with 1930s suburban housing
Nearby

Nearby postcode districts

Southall UB2Greenford UB6Hillingdon UB10West Drayton UB7Harefield UB9Uxbridge UB8
FAQ

Northolt (UB5) — FAQs

Can I build a side extension on a Northolt semi?+
That depends on where the house is. Inside the Northolt Village Green conservation area, side extensions are not permitted development and need a planning application. Outside it, a single-storey side extension can be permitted development if it meets the width and height limits; a two-storey one always needs an application. We check the house and the boundary before drawing.
Do listed buildings near the green affect my neighbouring house?+
They can. The council takes the setting of listed and locally important buildings into account when it assesses nearby schemes, so a design close to the church or the green is judged for how it reads next to them as well as on its own merits.
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