12a, Highnam Crescent Road, Sheffield, S10 1BZ

12a is a detached house in Sheffield (S10 1BZ). It has a recorded floor area of 96 m² (around 1033 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (November 2018) shows a D (score 63), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since November 2008. Between certificates, wall efficiency went from Very Poor to Poor and lighting went from Very Poor to Average; while window efficiency dropped from Good to Average. The recommended improvements would push it to C (score 78). At 96 m² this is the 8th smallest of 15 units on EPC record in the building, where floor areas span 59–239 m². The building's EPC ratings span F to C across 15 units on file.

Today's modelled estimate of £234,000 is 72.5% below the 2019 sale of £850,000, below the original sale price, which typically signals condition or completion-status changes worth verifying. On a £-per-square-foot basis, the last sale (£823/sq ft) was about 451.8% above the typical sold price in the postcode. Most recent transfer: December 2019 at £850,000.