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Permitted25/4277/HSESubmitted 11 months agoLoft conversion

17 Thornton Way London Borough of Barnet NW11 6SE

Changes to fenestration; new ground floor bay window, new dormer window on second floor to south elevation. New ground floor air source heat pump on north elevation (AMENDED DESCRIPTION)(UPDATED PLANS)

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Map of the site

Progress

Submitted
28 Oct 2025
— completed
Validated
28 Oct 2025
— completed
Consultation
4 Feb 2026
— completed
Target date
23 Dec 2025
— completed
Decided
17 Feb 2026
— completed

Application details

Reference
25/4277/HSE
Local authority
Barnet
Postcode
NW11 6SE
Ward
GS22
Application type
Householder
Property type
House

Key dates

Submitted
28 Oct 2025
Validated
28 Oct 2025
Comments close
4 Feb 2026
Target decision
23 Dec 2025
Decided
17 Feb 2026

Estimated project value

£3k–£7k

Based on the 2.0m² of floor area stated in the application, at inner London rates (2026). Source: Checkatrade 2026, loft conversion £1,200-£2,500/m².

Floor area gained: 2m²

Recently sold nearby

Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts.

Homes here go for about £1,750,000 — the median of the last 3 market sales in NW11 6SE, £705,000 to £2,725,000.

Contains HM Land Registry data © Crown copyright and database right 2025. This data is licensed under the Open Government Licence v3.0. Sales are matched by postcode, not by property, so a sale listed here may be a neighbouring address. England and Wales only.

Planning constraints

No designations recorded at this location. This is not a formal search — always confirm with the local authority before relying on it.

Designations from planning.data.gov.uk, Open Government Licence v3.0. Indicative only — not a formal local authority search.

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