21 Mill Street, Stockton On Tees, TS20 1AB
About 21 Mill Street
21 Mill Street is an end-of-terrace house in Stockton On Tees (TS20 1AB). It has a recorded floor area of 95 m² (around 1023 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (July 2023) shows a D (score 66), on the cusp of jumping into the C band. When first surveyed in June 2013 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Good and hot-water efficiency went from Average to Good. The recommended improvements would lift it to B (score 85), a 2-band jump.
Across 1998–2023, sale prices on this property compounded at 5.9% per year. On a £-per-square-foot basis, the last sale (£137/sq ft) was about 37% above the typical sold price in the postcode. Last sale on file: £140,500 in October 2023.
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water system upgraded
Loft insulation installed or upgraded to 250mm+
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
21 Mill Street has no planning applications on record.
A planning report still maps activity across the surrounding area and reads this property's extension & conversion potential.
Sales history & valuation
Price for 21 Mill Street has grown more than fourfold since the 1998 starting point.
£150,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.9% per year over 26 years.
£140,500
Growth on file: 5.9% per year over 26 years.
Sales timeline
19 October 2023Most recent
£140,500
+3.3%over 2 years15 September 2021
£136,000
+36.0%over 1 year28 July 2020
£100,000
-4.8%over 4 years20 August 2015
£105,000
-12.5%over 7 years19 February 2008
£120,000
+0.8%over 1 year25 January 2007
£119,000
+173.6%over 4 years30 May 2002
£43,500
+33.8%over 4 years16 February 1998
£32,500
Median price across the last 5 sales in TS20 1AB: £145,000 (2025–2024).
Nearby sales in TS20 1AB
22 Mill Street, Stockton On Tees, TS20 1AB
Sold Sept 2025
£143,00024 Mill Street, Stockton On Tees, TS20 1AB
Sold Aug 2025
£145,00026 Mill Street, Stockton On Tees, TS20 1AB
Sold Jul 2025
£180,00013 Mill Street, Stockton On Tees, TS20 1AB
Sold Oct 2024
£147,00028 Mill Street, Stockton On Tees, TS20 1AB
Sold Mar 2024
£122,000
Versus other Mill Street homes
On epc rating, 21 Mill Street stands well clear of the street.
Price per m²
£1,479
Street avg £1,330
Floor Area
95 m²
Street avg 90 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
4.3 t/year
Street avg 5.1 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
7/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Library — bus stop.
Closest school
0.1 km
St Joseph's Catholic Academy. 22 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
54.4dB

Night-time· 23:00 – 07:00
44.0dB







