12 Coniston Street, Darlington, DL3 6DJ
About 12 Coniston Street
12 Coniston Street is a two-bedroom mid-terrace house in Darlington (DL3 6DJ). It has a recorded floor area of 72 m² (around 775 sq ft), construction records dating it to 1900-1929 and council tax band A. Tenure is freehold. The latest certificate (June 2025) shows a C (score 69), just inside the C band. When first surveyed in May 2014 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor and roof efficiency went from Very Poor to Very Good; while window efficiency dropped from Good to Poor and lighting dropped from Very Good to Average. The property has solar panels on record, all of which lower running costs and tend to lift resale appeal.
A recent sale: £125,000 in August 2025. Across the public record there are 4 sales, relatively high churn for a single property. Its energy rating outperforms most of the postcode (better than 81% of similar EPCs). Across 2003–2025, sale prices on this property compounded at 2.9% per year. On a £-per-square-foot basis, the last sale (£161/sq ft) was about 50.5% above the typical sold price in the postcode.
What this property has
Inside
- Bedrooms2
- Bathrooms1
Outside
- Private gardenRear
Building
- TenureFreehold
- Solar panelsYes
- RefurbishedYes
Energy performance
EPC Rating
Certificate validity
Valid until 17 June 2035
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Wall insulation improved
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
12 Coniston Street has no planning applications on record.
But the area is active
19 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
12 Coniston Street valuation sits well clear of the typical sold price in this postcode.
£128,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.9% per year over 23 years.
£125,000
Growth on file: 2.9% per year over 23 years.
Sales timeline
31 August 2025Most recent
£125,000
-3.8%over 3 years10 July 2022
£130,000
+47.7%over 7 years24 November 2014
£88,000
+35.5%over 11 years7 February 2003
£64,950
Median price across the last 5 sales in DL3 6DJ: £106,500 (2026–2025).
Nearby sales in DL3 6DJ
2a, Coniston Street, Darlington, DL3 6DJ
Sold Jan 2026
£127,00038 Coniston Street, Darlington, DL3 6DJ
Sold Sept 2025
£100,0003 Coniston Street, Darlington, DL3 6DJ
Sold Jul 2025
£90,00044 Coniston Street, Darlington, DL3 6DJ
Sold Jun 2025
£129,99548 Coniston Street, Darlington, DL3 6DJ
Sold Apr 2025
£106,500
Versus other Coniston Street homes
12 Coniston Street outperforms the street on price per m² by a wide margin.
Price per m²
£1,736
Street avg £1,312
Floor Area
72 m²
Street avg 74 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
2.4 t/year
Street avg 3.8 t/year
Similar properties nearby
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1 Coniston Street
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The neighbourhood at a glance
Crime
299/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Olympic Street — bus stop.
Closest school
0.4 km
Reid Street Primary School. 29 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
54.0dB

Night-time· 23:00 – 07:00
42.8dB







