15 Britannia Close, Northolt, UB5 6JY

15 Britannia Close is a one-bedroom mid-terrace house in Northolt (UB5 6JY). It has a recorded floor area of 33 m² (around 355 sq ft), construction records dating it to 1976-1982 and council tax band B. The latest certificate (December 2025) shows a C (score 72). The rating has held steady at C across 2 certificates since December 2015. Between certificates, wall efficiency dropped from Good to Average and hot-water efficiency dropped from Good to Average. This certificate was lodged in the last six months, so the rating reflects current condition. At 33 m² this is the 3rd smallest of 54 units on EPC record in the building, where floor areas span 30–124 m². The building's EPC ratings span E to B across 54 units on file.

At 33 m² it sits well below the postcode median (82 m² across 53 EPCs), making it one of the more compact homes locally. Across 2004–2016, sale prices on this property compounded at 5.2% per year. On a £-per-square-foot basis, the last sale (£619/sq ft) was about 143.7% above the typical sold price in the postcode. Last sold in February 2016, so it's been off the market for around 10 years.