3b, Princes Street, Ipswich, IP1 1PN

3b is an end-of-terrace house in Ipswich (IP1 1PN). It has a recorded floor area of 74 m² (around 797 sq ft), construction records dating it to before 1900 and council tax band A. At 74 m² this is the 2nd smallest of 3 units on EPC record in the building, where floor areas span 56–74 m². On EPC score it ranks last in the building (39 versus a best of 50). The latest certificate (April 2022) shows an E (score 39), well below the UK norm with real room to improve. Earlier certificates rated it D (March 2009); the latest reading is one band lower. Between certificates, wall efficiency went from Very Poor to Good, window efficiency went from Very Poor to Poor and main heating went from Poor to Average; while hot-water efficiency dropped from Poor to Very Poor and lighting dropped from Very Good to Good. The recommended improvements would push it to D (score 64). Main heating runs on electricity.

Untraded for 21 years, with the last transfer in August 2005. Across the public record there are 4 sales, relatively high churn for a single property. Across 2000–2005, sale prices on this property compounded at 24.2% per year. Today's modelled estimate of £131,000 is 24.8% above the 2005 sale price. On a £-per-square-foot basis, the last sale (£132/sq ft) was about 112.8% above the typical sold price in the postcode.