Grosvenor House, Flat 5, Ambrose Place, Worthing, BN11 1PZ

Grosvenor House is a one-bedroom semi-detached house in Worthing (BN11 1PZ). It has a recorded floor area of 45 m² (around 484 sq ft), construction records dating it to 1900-1929 and council tax band B. At 45 m² this is the 3rd smallest of 6 units on EPC record in Grosvenor House, where floor areas span 39–74 m². The building's EPC ratings span E to C, with this unit at the top. The latest certificate (July 2020) shows a C (score 71). When first surveyed in February 2009 the rating was D, the property has climbed 1 band since. Between certificates, window efficiency went from Very Poor to Average and lighting went from Very Poor to Very Good; while wall efficiency dropped from Average to Very Poor.

On the market in June 2017 and unlisted since — roughly 9 years. Across the public record there are 5 sales, relatively high churn for a single property. Its energy rating outperforms most of the postcode (better than 86% of similar EPCs). Across 1996–2017, sale prices on this property compounded at 9% per year. Today's modelled estimate of £188,000 is 11.2% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£349/sq ft) was about 40.7% above the typical sold price in the postcode.