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Permitted11/2592Basement

The Kings Observatory Old Deer Park Richmond upon Thames TW9 2SB

Phase 1: Change of use and conversion of Observatory from mainly B1 office use to single C3 dwelling house with associated external/internal alterations including new services/plant, relocation of Meteorological Huts /other historic remnants within curtilage; removal of majority of ancillary buildings/structures/hardstanding including C3 caretakers lodge. Conversion of part of ancillary B1 office building to interim C3 staff cottage with external/internal alterations; interim retention of part car park; construction of lake with boathouse/replace transformer/groundsman shed; realignment of existing access road and regrading of artificial mounds, new landscaping and boundary treatment. Phase 2: Removal of interim C3 staff cottage, remaining surface car parking and section of Observatory vault; construction of subterranean extension with underground link to provide ancillary accommodation for dwelling house and staff, separate staff flat and car park; assocated re-grading/landscaping. (refer to letter from Alistair Grills dated 2nd August 2011).

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Map of the site

Progress

Submitted
—
— completed
Validated
—
— completed
Consultation
—
— completed
Target date
—
— completed
Decided
29 Oct 2014
— completed

Application details

Reference
11/2592
Local authority
Richmond
Postcode
TW9 2SB
Ward
NORTH RICHMOND
Application type
All Other
Property type
Flat

Key dates

Decided
29 Oct 2014

Estimated project value

£125k–£315k

Typical UK cost for this job type, at outer London rates (2026). Estimated from the proposal description — planning applications do not state build cost. Source: trade estimate.

Recently sold nearby

New owners, recently moved in. First work on a house usually follows within months of completing. 8 recent sales are listed below.

Homes here go for about £825,000 — the median of the last 8 market sales in TW9 (the wider postcode district), £310,000 to £2,080,000.

Contains HM Land Registry data © Crown copyright and database right 2026. 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