Monarch House, 8 Church Street, Isleworth, TW7 6XB Data via plota.co.uk

P/2026/2777 - Variation / Removal of a condition all other minor REGISTERED: Under Consultation
Admin / proceduralCommercial premises

Proposal

Variation of condition 2 (Approved Plans) following planning permission approved 13/12/2023 Erection of a roof extension with front and rear windows and a raised front, side and rear parapet wall to form an additional floor to be used as an office space. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
30 Sept 2026
Decision
Expected by 25 Nov 2026

Under consideration

No decision has been issued yet. A decision is expected by 25 Nov 2026.

Comments are open until 26 Oct 2026

Comment on this application ↗

Documents 3

Statements & assessments 1

PDF 2024.001_8MH_DesignStatement.pdf P-Planning Statement · 30 Sept 2026 View ↗

Plans & drawings 1

PDF D01-AS-BUIILT & APPROVED DRAWINGS.pdf P-Proposed Other · 30 Sept 2026 View ↗

Application forms 1

PDF ApplicationFormRedacted.pdf P-Planning Application Form · 30 Sept 2026 View ↗

All documents on the council site ↗

Associated applications 2

  • Part of

    Fullcouncil archive

    Conditions variation sought for 2

    • VariationVariation of condition 2 (Approved Plans) Erection of a roof extension with front and rear…This applicationP/2026/2777

Site constraints 14

Grade II listed: 6 and 8 Church Street
List entry 1080356 · 10 m away · 6 more listed buildings within 150 m (6 Grade II)
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 the other 6 with distances
Historic England ↗
Flood zone 3, rivers and sea
High chance: a 1 in 100 or greater annual chance from rivers, or 1 in 200 from the sea. Any development here needs a flood risk assessment. Defences are not counted.
The Environment Agency flood map for planning. Homes in zone 3 must also pass the sequential test. Surface water flooding is a separate map.
Flood map ↗
Isleworth Riverside conservation area
Also Isleworth Riverside. 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.
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 ↗
Local nature reserve 106 m away: Isleworth Ait
Work nearby can need a habitats assessment.
Harm to a protected site is only accepted where there is no alternative and an overriding public interest.
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
SSSI 474 m away: Syon Park SSSI; National infrastructure project 929 m away: Teddington Direct River Abstraction (TDRA), at pre-application; Inside the Hounslow built-up area; Public transport access: PTAL 2 (poor), TfL 2023, for the 100 m square; Flood defence 43 m away (wall, designed for a 1 in 1000 year flood); Metropolitan Open Land 59 m away.
Not affected
Not green belt · No scheduled monument at the site

Checked on 6 October 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 2

Last sold for £850,000 in July 2020. Other property, freehold.

17 July 2020£850,000Recorded as a transfer outside a standard sale
31 March 2015£670,000Recorded as a transfer outside a standard sale

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

Building

Floor area388 m² (4,176 sq ft)
Energy ratingB (asset rating 42)
UseOffices and Workshop Businesses
HeatingHeating and Natural Ventilation

From the energy performance certificate lodged in August 2026, the latest held for this property. The building may have changed since. View the certificate

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Certificate of lawfulness for the proposed erection of a rear roof extension.

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Important details

Council
Hounslow
Application type
Variation / Removal of a condition all other minor
Postcode
TW7 6XB
Received
30 Sept 2026
Validated
30 Sept 2026
Ward
Isleworth
Case officer
Show
Applicant
Show
Freehold owner
Show

Consultation & key dates

Consultation
5 Oct 2026
Comments by
26 Oct 2026
Statutory expiry
25 Nov 2026

Historical activity at this location

27 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2023 Approved
Erection of a roof extension with front and rear windows and a raised front, side and rea…
P/2023/0045
2023 Approved
Erection of a roof extension with front and rear windows and a raised front, side and rea…
P/2023/2588
Within ~100m

Nearby activity

2025 Approved
9 Bridge Wharf Road, Isleworth, TW7 6BS
Installation of six rooflights into the existing roof and the creation of a rounded windo…
P/2025/1329
2025 Refused
4 Church Street, Isleworth, TW7 6BH
Installation of a new front door and rear door to allow the change of use of the existing…
P/2025/0394
2024 Approved
6 Church Street, Isleworth, TW7 6XB
Listed building consent for the conversion of the existing offices into five self contain…
P/2024/3317
2024 Approved
6 Church Street, Isleworth, TW7 6XB
Conversion of the existing offices into five self contained flats with associated landsca…
P/2024/3327
2024 Approved
108 Mill Plat, Isleworth, TW7 6BZ
Works to a tree in a Conservation Area: T1 - Honey Locust (Gleditsia triacanthos), front…
P/2024/2738
2024 Refused
4 CHURCH STREET, ISLEWORTH, TW7 6BH
Conversion of the office (class E) into a single family house (class C3)
P/2024/1071
2024 Approved
6 CHURCH STREET, ISLEWORTH, TW7 6XB
Conversion of the existing office into five self-contained flats with cycle stands, refus…
P/2024/0443
2024 Refused
6 CHURCH STREET, ISLEWORTH, TW7 6XB
Conversion of the existing office into five self-contained flats with cycle stands, refus…
P/2024/0437
2022 Approved
13 BRIDGE WHARF ROAD, ISLEWORTH, TW7 6BS
Works to a tree in a conservation area. T1 Golden Acacia. Crown Reduction - Reducing the…
P/2022/3873
2022 Approved
27 CHURCH STREET, ISLEWORTH, TW7 6BE
T1 - Crab Apple (Malus sylvestris) Fell to ground level and remove all arisings and grind…
P/2022/3289
2022 Withdrawn
27 CHURCH STREET, ISLEWORTH, TW7 6BE
T1 - Crab Apple (Malus sylvestris) Fell to ground level and remove all arisings and grind…
P/2022/2668
2022 Approved
13 BRIDGE WHARF ROAD, ISLEWORTH, TW7 6BS
T1 Horse Chestnut (Aesculus hippocastanum) - Fell to ground level
P/2022/2593
2022 Approved
OSPREY HOUSE LOWER SQUARE, ISLEWORTH, TW7 6XJ
Works to trees within a conservations area - Whitebeam (T1) to crown reduce by 2m from ti…
P/2022/1868
2022 Approved
44 CHURCH STREET, ISLEWORTH, TW7 6BG
Erection of a single storey rear extension and rear infill extension to the house
P/2022/1791
2022 Approved
44 CHURCH STREET, ISLEWORTH, TW7 6BG
Erection of a single storey rear extension and rear infill extension to the house
P/2022/1630
2021 Approved
11 BRIDGE WHARF ROAD, ISLEWORTH, TW7 6BS
Works to Cypress and a Norway Maple: pruning approx. 2m from the side not the height
P/2021/2353
2021 Approved
6 CHURCH STREET, ISLEWORTH, TW7 6XB
Listed building consent for the conversion of offices into eight self contained flats
P/2021/1941
2021 Refused
6 CHURCH STREET, ISLEWORTH, TW7 6XB
Conversion of offices into eight self contained flats
P/2021/1921
2021 Approved
36 CHURCH STREET, ISLEWORTH, TW7 6BG
The trees are NOT subject to TPO i am in a conservation area tree/s is in private develop…
P/2021/2357
2021 Withdrawn
6 CHURCH STREET, ISLEWORTH, TW7 6XB
Listed building consent for the conversion of offices into eight self contained flats
P/2021/0745
2018 Approved
34 CHURCH STREET ISLEWORTH TW7 6BG
Erection of a rear roof extension with one rear dormer and three front roof dormers,incre…
P/2018/0496
2018 Approved
108 MILL PLAT ISLEWORTH TW7 6BZ
Works to Cherry tree in the front garden tree within Conservation Area comprising of - Re…
P/2018/0036
2017 Approved
2 CHURCH STREET ISLEWORTH TW7 6XB
Listed building consent for internal alterations to include the creation of an archway be…
P/2017/3886
2017 Approved
7 9 11 BRIDGE WHARF ROAD ISLEWORTH TW7 6BS
Replacement of existing wooden cladding at the rear of the properties and balconies with…
P/2017/1439
2016 Approved
Ferry House Park Road ISLEWORTH TW7 6BD
Removal of a Yew Tree (T 59) in a conservation area
P/2016/2480
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
Source: MHCLG planning statistics · See full council rankings

Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use

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.

Freehold owner and leaseholders: Information produced by HM Land Registry. © Crown copyright 2026. Source: HM Land Registry, UK and overseas companies that own property in England and Wales, September 2026 release.