15 Dolphin House, Sutton Wharf, Plymouth, PL4 0BL

15 Dolphin House is an end-of-terrace house in Plymouth (PL4 0BL). It has a recorded floor area of 52 m² (around 560 sq ft) and construction records dating it to 1991-1995. The latest certificate (December 2025) shows a C (score 75), near the top of the C band. The rating has held steady at C across 2 certificates since December 2011. Between certificates, hot-water efficiency went from Very Poor to Good and lighting went from Very Poor to Very Good; while window 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. At 52 m² this is the 6th smallest of 24 units on EPC record in the building, where floor areas span 33–213 m². The building's EPC ratings span E to B across 24 units on file.

Across 1998–2018, sale prices on this property compounded at 4.8% per year. Today's modelled estimate of £154,000 is 12% below the 2018 sale of £175,000, below the original sale price, which typically signals condition or completion-status changes worth verifying. On a £-per-square-foot basis, the last sale (£313/sq ft) was about 83.6% above the typical sold price in the postcode. Last sold in February 2018, so it's been off the market for around 8 years. At 52 m² it's 24.6% smaller than the typical home in the postcode (69 m² median across 23 EPCs).