Warren House
Kingston upon Thames, London, United Kingdom
Built 2000 · Last completed renovation 2005
Warren House in Kingston upon Thames, London was last renovated in 2005, and originally built in 2000. Its HotelChrono freshness score is 2.7/10 — every date linked to a cited source.
Data check
- · Sources disagree on the opening year — under review
Renovation forecast · estimate
Likely due for renovation now
Past its typical ~8-year renovation cycle. A model estimate, not a sourced fact.
Timeline
1865
Victorian mansion built by Hugh Hammersley
1954
Converted to conference centre
1980
1980s expansion — London Room and swimming pool added by ICI
1999
Grade II listed building designation
2000
Acquired and opened as luxury hotel, wedding and conference venue
2005
Last recorded renovation
2020
New ownership; major renovation and 77-bedroom extension proposed
How this score is computed
Every figure here traces back to the sourced renovation year above — no hidden weighting, no black box. Recompute it yourself. See the full methodology →
What changed in the 2005 renovation
“Year Built: 1865 · Year Last Renovated: 2005”— source · retrieved 2026-08-24
Scope is quoted verbatim from the cited source — we never guess what a renovation covered.
Facts
Stars
4★
Built
Sourced2000
Last completed renovation
Sourced2005
Sources
Our iron rule: no quote, no data. Every date links back to the exact sentence it came from.
“Under new ownership since 2020, some exciting proposals have been prepared to undertake the most significant renovation and extension of this historic asset since it became a conference centre in 1954.”
“Year Built: 1865 · Year Last Renovated: 2005”
“Warren House was then acquired with the express intent of developing it into a luxury hotel, wedding and conference venue. This period marked a shift from private luxury to corporate function, a role it maintained until the year 2000.”
“Listing Date: 15 December 1999 · Grade: II · Source: Historic England”
“In the 1980's significant parts of the land were sold by ICI for housing, and the income was used to extend parts of the hotel, such as the London Room and the swimming pool.”
“Under new ownership since 2020, some exciting proposals have been prepared to undertake the most significant renovation and extension of this historic asset since it became a conference centre in 1954.”
“In 1865, Hugh Hammersley bought 16 acres of land from the Duke to build Warren House, a Hammersley family country retreat just 12 miles away from their London home in Kensington.”
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Frequently asked
When was Warren House built?+
Warren House (Kingston upon Thames, London, United Kingdom) was built in 2000.
How old is Warren House?+
Warren House is 26 years old — it was built in 2000 and last renovated in 2005. Age measures the building; the Chrono Score measures how fresh it feels today.
When was Warren House last renovated?+
Its most recent completed renovation was in 2005.
What is the Chrono Score of Warren House?+
Its Chrono Score is 2.7/10 (Tired) — a pure freshness metric, separate from its 4-star rating.