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Permitted21/01414/FULLSubmitted 5 years agoSide extension

15 Illingworth Windsor SL4 4UP

Part first floor/part two storey front/side extension, part garage conversion into habitable accommodation and alterations to fenestration.

Find on council portalDocuments (12)

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Progress

Submitted
7 May 2021
— completed
Validated
13 May 2021
— completed
Consultation
10 Jun 2021
— completed
Target date
8 Jul 2021
— completed
Decided
16 Sept 2021
— completed

Application details

Reference
21/01414/FULL
Local authority
Windsor
Postcode
SL4 4UP
Ward
Clewer And Dedworth East
Application type
Full
Property type
House

Key dates

Submitted
7 May 2021
Validated
13 May 2021
Comments close
10 Jun 2021
Target decision
8 Jul 2021
Decided
16 Sept 2021

12 documents · 0 comments · 8 constraints

Estimated project value

£29k–£69k

Typical UK cost for this job type, at South East rates (2026). Estimated from the proposal description — planning applications do not state build cost. Source: MyJobQuote / Checkatrade 2026 extension rates.

Recently sold nearby

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

Homes here go for about £1,075,000 — the median of the last 8 market sales in SL4 4UP, £900,000 to £1,200,000.

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.

Nearby applications