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Get startedLetter Box House is a mid-terrace house in Mordon, Stockton-On-Tees, Stockton On Tees (TS21 2EY). It has a recorded floor area of 100 m² (around 1076 sq ft), construction records dating it to before 1900 and council tax band D. The latest certificate (August 2017) shows an F (score 34), near the bottom of the EPC scale. The recommended improvements would lift it to A (score 93), a 5-band jump. Main heating runs on dual fuel.
Sale prices here have outpaced Stockton On Tees HPI: 18.3% per year against 0% for the wider region. On a £-per-square-foot basis, the last sale (£322/sq ft) was about 79.6% above the typical sold price in the postcode. At 100 m² it sits well below the postcode median (184 m² across 8 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 75% of similar EPCs). One planning record on file: an extension approved in 2018. Past consents include an extension, meaningful when judging how the property has evolved. Most recent transfer: June 2021 at £347,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Letter Box House's carbon output runs well above what efficient homes in the postcode produce.
Letter Box House has an approved rear extension on the planning record.
Extension: Rear of property
Two storey rear extension replacing existing single storey rear off-shoot
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£376,000
Modelled from EPC, postcode comparables and a sale-price growth of 18.3% per year over 3 years.
£347,000
Growth on file: 18.3% per year over 3 years.
On habitable rooms, Letter Box House runs well behind the street norm.
Price per m²
£3,470
Street avg £2,353
Floor Area
100 m²
Street avg 199 m²
Habitable Rooms
4 rooms
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km

Daytime· 07:00 – 23:00
43.7dB

4 June 2021Most recent
£347,000
+73.5%over 3 years22 February 2018
£200,000
Median price across the last 5 sales in TS21 2EY: £340,000 (2025–2021).
Street avg 8 rooms
CO₂ Emissions
9.7 t/year
Street avg 12.3 t/year
Village — bus stop.
Night-time· 23:00 – 07:00
36.0dB
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