11a, Ash Grove, Worthing, BN11 1PD

11a is a mid-terrace house in Worthing (BN11 1PD). It has a recorded floor area of 46 m² (around 495 sq ft), construction records dating it to before 1900 and council tax band B. At 46 m² this is the 6th smallest of 17 units on EPC record in the building, where floor areas span 32–164 m². The building's EPC ratings span G to C, with this unit at the top. On EPC score it ranks first in the building (70 versus a worst of 18). The latest certificate (June 2021) shows a C (score 70). When first surveyed in February 2010 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Average to Good, window efficiency went from Very Poor to Poor and lighting went from Average to Very Good.

At 46 m² it's 24.6% smaller than the typical home in the postcode (61 m² median across 16 EPCs). On energy efficiency it sits in the top 10% of properties in this postcode. On the market in July 2017 and unlisted since — roughly 9 years. Across the public record there are 5 sales, relatively high churn for a single property. 3 planning records sit against the property, 2 approved, 0 refused. Past consents include new windows, meaningful when judging how the property has evolved. Across 2000–2017, sale prices on this property compounded at 6.7% per year. Today's modelled estimate of £209,000 is 17.7% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£358/sq ft) was about 39.7% above the typical sold price in the postcode.