Dartmouth House,1A Dartmouth Place, Chiswick, London, W4 2RH Data via plota.co.uk

P/2025/3534 - Householder Applications Approved

Proposal

Alterations to an existing detached garage and outbuilding. Replacement crit-tall doors to replace existing up-and-over, installation of side entrance and window on north elevation and four rooflights. Installation of air source heat pump. Data via plota.co.uk

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View original council record ↗Last checked 10 Oct 2026, 06:45

Street View

Application progress

✓

Received

25 Nov 2025

✓

Validated

4 Dec 2025

✓

Approved

31 Mar 2026

Approved on 31 Mar 2026 · Last checked 4 Oct 2026

Documents 24

Decision & officer reports 2

PDF DECTP2 P-Decision Notice · 31 Mar 2026 View ↗ PDF P-Delegated Report P-Delegated Report · 26 Mar 2026 View ↗

Statements & assessments 2

PDF P-Design and Access Statement P-Design and Access Statement · 26 Mar 2026 View ↗ PDF 1133-Fire Statement.pdf P-Published Fire Safety · 25 Nov 2025 View ↗

Plans & drawings 19

Application forms 1

PDF ApplicationFormRedacted.pdf P-Planning Application Form · 25 Nov 2025 View ↗

All documents on the council site ↗

Site constraints 14

Old Chiswick conservation area

Also Old Chiswick. Demolition needs planning permission and permitted development is restricted.

The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.

Article 4 direction

Dwellinghouses (C3) to small HMOs (C4) - borough-wide Article 4 Direction. Named permitted development rights are withdrawn here.

An Article 4 direction withdraws particular permitted development rights, so work that would normally need no application needs one here. Not every council has published its directions.

In flood zones plus climate change

Inside the extent flood zones 2 and 3 could reach with climate change: the Central allowance for the 2080s on rivers, the Upper End allowance for sea level rise to 2125. From the sea. Defences are not counted.

The Environment Agency flood map for planning. Councils use it to decide when a flood risk assessment and the sequential test are needed. It is indicative and does not show whether a particular property will flood.

Flood map ↗

Archaeological priority area

An assessment or field evaluation may be asked for before ground works.

The council or Historic England considers archaeology likely here. A desk-based assessment, and sometimes trial trenching, can be asked for with the application.

Air quality management area: Hounslow AQMA

The council has declared the area as failing an air quality objective.

Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.

Council record ↗

National infrastructure project 343 m away: Thames Tideway Tunnel

The site is 343 m from the project boundary. Waste water treatment, decided. The project page says whether consent was granted.

Nationally significant infrastructure projects (power stations, electricity lines, pipelines, major roads and railways, harbours, airports and reservoirs) are consented by a Secretary of State under the Planning Act 2008, after an examination by the Planning Inspectorate, rather than by the council. The boundary is the one the Inspectorate consults on and can change as the scheme does. Projects are shown within 2 km of the site.

Planning Inspectorate project page ↗

Habitat network: Network Enhancement Zone 2

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

5 listed buildings within 150 m

Nearest: Cross of Sacrifice, Grade II, 55 m away · 5 Grade II

The site itself is not listed. Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.

Show all 5 with distances

55 mCross of SacrificeGrade II
94 mTomb of Frederick Hitch VcGrade II
95 mConvent of St Mary Hospital of St JosephGrade II
123 mChiswick House Lodge Opposite Corney RoadGrade II
140 mTomb of Sir William Blake RichmondGrade II

Historic England ↗

Registered park or garden 102 m away: Chiswick House

Its setting is a consideration for work nearby.

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

Historic England ↗

Also on the record

Local nature reserve 394 m away: Leg of Mutton Reservoir; Scheduled monument 227 m away: Chiswick House; Inside the Hounslow built-up area; Public transport access: PTAL 2 (poor), TfL 2023, for the 100 m square; Designated open space 14 m away.

Not affected

Outside flood zones 2 and 3 · Not green belt

Checked on 2 November 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) 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 3

Last sold for £3,500,000 in March 2025. Detached house, freehold.

21 March 2025£3,500,000

30 January 1998£1,475,000

30 August 1995£920,000

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

Building

Floor area382 m² (4,112 sq ft)

Energy ratingD (64 out of 100), could reach B

PropertyDetached house, 11 habitable rooms

Built1900 to 1929

HeatingBoiler and radiators, mains gas

WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in November 2022, the latest held for this property. The building may have changed since. View the certificate

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Other new applications on this street

21 Oct 2026Pending

10 Dartmouth Place,Chiswick,W4 2RH

Replacement of garage door.

P/2026/2595

Nearby new applications

3 Nov 2026Pending

1 Burlington Lane,Chiswick,W4 2RR

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2 Nov 2026Pending

1 Burlington Lane,Chiswick,W4 2RR

Details of Condition 10 (Noise Impact), submitted pursuant to permission P/2022/...

P/2026/3093

28 Oct 2026Pending

4 Chiswick Square,Chiswick,London,W4 2QG

Works to trees in a Conservation Area 1 X 1 Bay Laurel (Laurus Nobilis) crown ...

P/2026/3021

23 Oct 2026Pending

1 Burlington Lane,Chiswick,W4 2RR

Details of Condition 3 (Construction Environmental Method Statement), submitted ...

P/2026/3013

23 Oct 2026Pending

1 Burlington Lane,Chiswick,W4 2RR

Details of Condition 6 (Ecological Management Plan), submitted pursuant to permi...

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23 Oct 2026Pending

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Details of Condition 12 (Planning Fire Safety Strategy), submitted pursuant to p...

P/2026/3015

Important details

Council: Hounslow
Application type: Householder Applications
Postcode: W4 2RH
Received: 25 Nov 2025
Validated: 4 Dec 2025
Ward: Chiswick Homefields
Case officer: Show
Decision: APPROVED
Decision date: 31 Mar 2026
Applicant: Show

How this decision compares

Decided in 117 days from validation, 61 days slower than Hounslow's median of 56 for householder applications. Approved, as 81% of householder applications here are.

This one117d

Council56d

UK56d

62%decided within 8 weeks

81%approved

724decided in the last year

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

Consultation & key dates

Consultation: 11 Dec 2025
Comments by: 5 Feb 2026
Site or press notice: 19 Dec 2025
Statutory expiry: 29 Jan 2026

Historical activity at this location

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

Within ~100m

Nearby activity

2025 Approved

St Marys Convent And Nursing Home, 28 Burlington Lane, Chiswick, London, W4 2QE

Works to trees in a Conservation Area. Robinia (T2). Reduce crown height and width by app…

P/2025/3247 21 Nov 2025

2025 Approved

St Marys Convent And Nursing Home, 28 Burlington Lane, Chiswick, London, W4 2QE

Works to tree TPO 102. Sycamore (T1) Reduce crown height and width by 1.5m and back to pr…

P/2025/3256 21 Nov 2025

2025 Approved

8 Langham Place, Chiswick, London, W4 2QL

Works to tree within a conservation area - Prunus (T1) - Reduce crown height and spread b…

P/2025/2657 22 Sep 2025

2024 Approved

ST MARYS CONVENT AND NURSING HOME 28 BURLINGTON LANE, CHISWICK, W4 2QE

Listed Building consent for the erection of single storey sheltered accomodation units ac…

P/2024/1027 8 Nov 2024

2024 Approved

ST MARYS CONVENT AND NURSING HOME 28 BURLINGTON LANE, CHISWICK, W4 2QE

Erection of single storey sheltered accomodation units across the site with four units on…

P/2024/1024 8 Nov 2024

2024 Approved

8 DARTMOUTH PLACE, CHISWICK, W4 2RH

Works to a tree in a conservation area: Box Elder Crown reduction by approximately 3 m

P/2024/0406 20 Mar 2024

2023 Approved

15 LANGHAM PLACE, CHISWICK, W4 2QL

Works to G1 tree group positioned along the shared boundary with Burlington Lane in a Con…

P/2023/3566 14 Feb 2024

2023 Approved

ST MARYS CONVENT AND NURSING HOME 28 BURLINGTON LANE, CHISWICK, W4 2QE

Works to Beech tree T6 at rear of building within TPO 102. Reduce the crown by 2-2.5m all…

P/2023/3224 6 Nov 2023

2023 Approved

11 DARTMOUTH PLACE, CHISWICK, W4 2RH

Work to Hawthorn tree in rear garden within conservation area. Reduce all aspects of crow…

P/2023/2532 11 Sep 2023

2023 Approved

6 DARTMOUTH PLACE, CHISWICK, LONDON, W4 2RH

Works to a tree within a Conservation Area: Crab Apple (x2) (G1) - Reduce crown height by…

P/2023/0515 23 May 2023

2022 Refused

9 DARTMOUTH PLACE, CHISWICK, W4 2RH

Erection of garden wall along boundary of rear garden to rear and north side, and partial…

P/2022/2960 10 Nov 2022

2021 Approved

ST MARYS CONVENT AND NURSING HOME 28 BURLINGTON LANE, CHISWICK, W4 2QE

Works to two trees within a Tree Preservation Order: T1 Sycamore TPO 102 - Reduce height…

P/2021/4552 11 Jan 2022

2021 Approved

ST MARYS CONVENT AND NURSING HOME 28 BURLINGTON LANE, CHISWICK, LONDON, W4 2QE

Felling and works to a selection of trees in a conservation area: T2 Robinia - Reduce cro…

P/2021/4658 22 Dec 2021

2021 Approved

LANGHAM PLACE, CHISWICK, LONDON, W4 2QL

Works to trees within a consevation area - Silver Maple (Acer saccharinum) (T1) to reduce…

P/2021/4104 20 Dec 2021

2021 Approved

10 LANGHAM PLACE, CHISWICK, LONDON, W4 2QL

Works to an Ornamental Pear Tree in a conservation area: T2 - Reduce height by 2.5 metres…

P/2021/4502 17 Dec 2021

2021 Approved

8 LANGHAM PLACE, CHISWICK, LONDON, W4 2QL

Works to an Ornamental pear tree in a conservation area: T1 - Reduce height by 2.5 metres…

P/2021/4501 17 Dec 2021

2021 Approved

9 LANGHAM PLACE, CHISWICK, LONDON, W4 2QL

Fell one Birch tree and replace with a Midland Hawthorn at front of property.

P/2021/1633 11 May 2021

2020 Approved

8 LANGHAM PLACE, CHISWICK, LONDON, W4 2QL

Remove Dead crab apple tree in rear garden.

P/2020/3655 28 Oct 2020

2020 Approved

9 DARTMOUTH PLACE, CHISWICK, LONDON, W4 2RH

Fell Prunus tree (T1) and grind out stump to 200m below ground level at rear of house in…

P/2020/2341 27 Jul 2020

2020 Approved

14 DARTMOUTH PLACE, CHISWICK, LONDON, W4 2RH

Remove dead Norwegian Maple tree in rear garden in conservation area.

P/2020/1877 8 Jul 2020

2017 Approved

LANGHAM PLACE CHISWICK LONDON W4 2QL

Work to a group of 14 trees located within a conservation area, including felling of T4 P…

P/2017/4795 6 Dec 2017

2017 Approved

9 DARTMOUTH PLACE CHISWICK LONDON W4 2RH

Works to trees within a conservation area Ash (T1) - to fell Plum (T2) - to fell Wisteria…

P/2017/3094 22 Aug 2017

2016 Approved

28 ST MARYS CONVENT AND NURSING HOME BURLINGTON LANE CHISWICK LONDON W4 2QE

Works to trees within TPO 102: T6 - Cherry T8 - Copper Beech

P/2016/5642 23 Dec 2016

2016 Approved

28 ST MARYS CONVENT AND NURSING HOME BURLINGTON LANE CHISWICK LONDON W4 2QE

Works to trees within Old Chiswick conservation area. Works to various trees within the g…

P/2016/5264 23 Dec 2016

2016 Approved

14 DARTMOUTH PLACE CHISWICK LONDON W4 2RH

Works to trees within a conservation area - Common Crab Apple to reduce and round off upp…

P/2016/3498 31 Aug 2016

Hounslow

Planning Authority Score

2.1/10

Poor

#268 of 296 councils

Relevant to this application:

Householder decisions

Hounslow is slower than most councils at deciding householder applications, ranking #203 out of 296. 47% of applications have the time limit extended, above the 41% national average. Hounslow is also one of the strictest councils - it refuses more householder applications than almost any other, with only 75% approved vs 90% nationally.

One of the strictest councils

only 75% approved vs 90% nationally

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

Hounslow decision statistics

Based on MHCLG data, the year to March 2026

71%

Overall approval rate

Below avg (87%) #294 of 296

75%

Householder approved

Below avg (90%) #293 of 296

56%

Decided in 8 weeks

Below avg (63%) #203 of 296

47%

Extended time limit

Above avg (41%) #208 of 296

38%

Minor dwellings approved

82 decided (1-9 homes)

93%

Major dwellings approved

14 decided (10+ homes)

29%

Change of use approved

72 decided

1,191

Total decisions

340 refused in the year to March 2026

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.