Little Dean Smithills Dean Road Bolton BL1 7NP Data via plota.co.uk

21423/25 - Householder Application for pl. permissi Approved

Proposal

Erection of part single/part two storey rear extension and rear dormer alongwith demolition of existing conservatory Data via plota.co.uk

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View original council record ↗Last checked 8 Oct 2026, 06:53

Application progress

✓

Received

20 Nov 2025

✓

Validated

2 Dec 2025

✓

Consultation

22 Jan 2026

✓

Approved

4 Mar 2026

Approved on 4 Mar 2026 · Delegated Decision · Last checked 2 Oct 2026

Documents 15

Site constraints 8

Green belt: Merseyside and Greater Manchester

Inappropriate development needs very special circumstances.

Green belt policy allows a short list of exceptions, such as limited extensions and replacement buildings. Anything else needs very special circumstances that clearly outweigh the harm. Some green belt land can count as grey belt, where it does not strongly serve the green belt's purposes. The council decides this in its green belt assessment or on each application, so we do not mark it here.

Read the government guidance ↗

Registered park or garden: Smithills Hall

Nationally designated heritage. Its significance and setting carry great weight.

Registered parks and gardens, battlefields, world heritage sites and protected wrecks are designated heritage assets: harm needs clear and convincing justification.

Historic England ↗

Public restricted byway about 13 m away

Matters where it crosses or adjoins the site: obstructing a path without a diversion order is an offence, and work cannot start until the order is confirmed.

Compiled from highway authority data, not the legal definitive map. A few authorities have not published, so no path shown is not proof there is none.

Habitat network: Network Enhancement Zone 2

Where habitat is joined up enough to work as a network. Context, not a constraint on its own.

Radon affected area, class 5

An estimated 10 to 30% of homes reach the radon action level. Indicative for the 1 km square, which takes the highest class found in it; a radon test gives the answer for a building.

From the British Geological Survey and UK Health Security Agency indicative atlas. Under building regulations, as the BRE guide BR 211 (2023) sets out, new buildings and extensions need basic radon protection from class 3 in England and Wales and from class 2 in Scotland, and full protection from class 5. The class at the site itself, from the detailed BGS map, decides which.

UKHSA radon ↗

Also on the record

Coalfield, development low risk area; Inside the Bolton (Bolton) built-up area; Priority habitat about 18 m away: Deciduous woodland.

Not affected

Outside flood zones 2 and 3 · No scheduled monument at the site

Checked on 6 October 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. Historic England, the Environment Agency, Natural England, the Mining Remediation Authority, the British Geological Survey and UK Health Security Agency (radon, contains BGS materials © UKRI) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

Sales history 1

Last sold for £820,000 in August 2025. Detached house, freehold.

27 August 2025£820,000

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

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Other new applications on this street

14 Sept 2026Pending

141 Smithills Dean Road Bolton BL1 6JZ

PART A ; PRUNING OF 2 NO. SYCAMORE, 1 NO. BEECH AND OAK PART B; FELLING OF 1 NO....

01669/26

Nearby new applications

7 Oct 2026Pending

1 Longhirst Close Bolton BL1 6NF

PRUNING OF 1NO. SILVER BIRCH TREE

01816/26

14 Sept 2026Pending

141 Smithills Dean Road Bolton BL1 6JZ

PART A ; PRUNING OF 2 NO. SYCAMORE, 1 NO. BEECH AND OAK PART B; FELLING OF 1 NO....

01669/26

Important details

Council: Bolton
Application type: Householder Application for pl. permissi
Postcode: BL1 7NP
Received: 20 Nov 2025
Validated: 2 Dec 2025
Ward: Smithills
Case officer: Show
Target decision: 4 Mar 2026
Decision: Approve subject to conditions
Decision date: 4 Mar 2026
Decision level: Delegated Decision
Applicant: Show
Agent: Group D Architects

How this decision compares

Decided in 92 days from validation, 36 days slower than Bolton's median of 56 for householder applications. Approved, as 83% of householder applications here are.

This one92d

Council56d

UK55d

62%decided within 8 weeks

83%approved

363decided in the last year

Plota live figures for householder applications decided by Bolton in the last twelve months, from validation. Bolton decision record →

Public comments

No public comments yet.

7 neighbours consulted · Last counted 2 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference: PP-14503281
Planning Portal ref: PP-14503281
Neighbours: 22 Jan 2026
Consultation: 22 Jan 2026
Comments by: 16 Feb 2026
Statutory expiry: 27 Jan 2026
Env. assessment: No

Historical activity at this location

7 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2025 Approved

139 Smithills Dean Road Bolton BL1 6JZ

ERECTION OF A TWO STOREY SIDE AND SINGLE STOREY EXTENSION AT FRONT

20809/25 21 Nov 2025

2024 Refused

141 Smithills Dean Road Bolton BL1 6JZ

FELLING OF 1 NO. OAK, 1 NO. SYCAMORE, 1NO. HORSE CHESTNUT

19340/24 13 Jan 2025

2024 Refused

141 Smithills Dean Road Bolton BL1 6JZ

FELLING OF 1 NO. ASH

19271/24 6 Jan 2025

2024 Approved

141 Smithills Dean Road Bolton BL1 6JZ

PART A; PRUNING OF 1 NO. BEECH, SYCAMORE, ASH AND OAK. PART B; FELLING OF 2 NO, OAK, SYCA…

17836/24 2 Jul 2024

2019 Approved

129 Smithills Dean Road Bolton BL1 6JZ

ERECTION OF SINGLE STOREY EXTENSION AT REAR

06234/19 23 Aug 2019

2016 Approved

SMITHILLS HALL, SMITHILLS DEAN ROAD, BOLTON, BL1 7NP

ERECTION OF METAL GARDEN SHED IN COURTYARD AREA.

96025/16 9 May 2016

2016 Approved

SMITHILLS HALL, SMITHILLS DEAN ROAD, BOLTON, BL1 7NP

LISTED BUILDING CONSENT FOR THE INSTALLATION OF PROTECTIVE CASE AROUND MARSH FOOTPRINT LO…

95970/16 20 Apr 2016

Bolton

Planning Authority Score

2.5/10

Poor

#250 of 296 councils

Relevant to this application:

Householder decisions

Bolton is slower than most councils at deciding householder applications, ranking #229 out of 296. Bolton is also one of the strictest councils - it refuses more householder applications than almost any other, with only 83% approved vs 90% nationally.

One of the strictest councils

only 83% approved vs 90% nationally

These figures are council-wide context, not a prediction for this application. View full council performance

Bolton decision statistics

Based on MHCLG data, the year to March 2026

79%

Overall approval rate

Below avg (87%) #263 of 296

83%

Householder approved

Below avg (90%) #259 of 296

51%

Decided in 8 weeks

Below avg (63%) #229 of 296

44%

Extended time limit

Above avg (41%) #175 of 296

63%

Minor dwellings approved

70 decided (1-9 homes)

83%

Major dwellings approved

12 decided (10+ homes)

62%

Change of use approved

113 decided

996

Total decisions

208 refused in the year to March 2026

Little Dean Smithills Dean Road Bolton BL1 7NP Data via plota.co.uk

Proposal

Application progress

Documents 15

Decision & officer reports 2

Plans & drawings 12

Application forms 1

Site constraints 8

Sales history 1

Other new applications on this street

Nearby new applications

Important details

How this decision compares

Public comments

Consultation & key dates

Nearby activity