12 Rock Road, Cambridge, CB1 7UF

12 Rock Road is a four-bedroom detached house in Cambridge (CB1 7UF). It has a recorded floor area of 45 m² (around 484 sq ft), construction records dating it to 2012-2021 and council tax band F. At 45 m² this is the smallest unit on EPC record across the building (45–207 m²). The building's EPC ratings span F to B across 25 units on file. The latest certificate (November 2025) shows a C (score 77), near the top of the C band. When first surveyed in December 2011 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Very Poor to Good, window efficiency went from Poor to Average and lighting went from Poor to Very Good; while hot-water efficiency dropped from Good to Average. Main heating runs on electricity. This certificate was lodged in the last six months, so the rating reflects current condition.

Sale prices here have outpaced Cambridge HPI: 10.3% per year against 0% for the wider region. Today's modelled estimate of £927,000 is 41.5% above the 2012 sale price. On a £-per-square-foot basis, the last sale (£1,352/sq ft) was about 410.6% above the typical sold price in the postcode. At 45 m² it sits well below the postcode median (140 m² across 24 EPCs), making it one of the more compact homes locally. Last changed hands 14 years ago, in April 2012. Across the public record there are 4 sales, relatively high churn for a single property. One planning record on file: an extension approved in 2018. Past consents include an extension and partial demolition, meaningful when judging how the property has evolved.