HM Land Registry records the plot of land for 21, Lock Street, Darlington as measuring 76 m².

That makes it the 5th largest plot in the postcode, where 8 of the 11 other houses have recorded plot data.

21, Lock Street, Darlington has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 25 Mar 2025.

The property is not connected to mains gas and has fully double glazed windows. It is heated using room heaters (electric).

The most recent sale of 21, Lock Street, Darlington completed on 28th January 2008 at £68,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 this is the property's only sale.

Values of comparable properties have risen by 91.9% over the period since January 2008.

Since 2021 95 properties similar to 21, Lock Street, Darlington have sold within a radius of 580 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 6th March 2026, was 120, Brougham Street, Darlington, DL3 0NA, a freehold house which sold for £72,000.

Read more about house prices in DL3.

• Sold Mar 2026£72,000 | 3 Bed House120, Brougham Street, Darlington, DL3 0NA120, Brougham Street, Darlington, DL3 0NA
• Sold Nov 2025£95,000 | 3 Bed House133, Lansdowne Street, Darlington, DL3 0NH133, Lansdowne Street, Darlington, DL3 0NH
• Sold Nov 2025£82,100 | 3 Bed House122, Zetland Street, Darlington, DL3 0NG122, Zetland Street, Darlington, DL3 0NG
• Sold Nov 2025£60,000 | 3 Bed House73, Zetland Street, Darlington, DL3 0NG73, Zetland Street, Darlington, DL3 0NG
• Sold Oct 2025£90,000 | 3 Bed House101, Lansdowne Street, Darlington, DL3 0NH101, Lansdowne Street, Darlington, DL3 0NH
• Sold Sep 2025£86,000 | 3 Bed House94, Brougham Street, Darlington, DL3 0NA94, Brougham Street, Darlington, DL3 0NA
• Sold Sep 2025£71,000 | 3 Bed House100, Brougham Street, Darlington, DL3 0NA100, Brougham Street, Darlington, DL3 0NA
• Sold Jun 2025£122,500 | 3 Bed House11, I'Anson Street, Darlington, DL3 0RL11, I'Anson Street, Darlington, DL3 0RL
• Sold Apr 2025£101,000 | 3 Bed House131, Lansdowne Street, Darlington, DL3 0NH131, Lansdowne Street, Darlington, DL3 0NH
• Sold Oct 2024£80,000 | 3 Bed House11, Sheraton Street, Darlington, DL3 0XU11, Sheraton Street, Darlington, DL3 0XU
• Sold Sep 2024£115,000 | 3 Bed House113, Brougham Street, Darlington, DL3 0NA113, Brougham Street, Darlington, DL3 0NA
• Sold Aug 2024£64,000 | 3 Bed House98, Brougham Street, Darlington, DL3 0NA98, Brougham Street, Darlington, DL3 0NA
• Sold Jul 2024£95,000 | 3 Bed House29, Lock Street, Darlington, DL3 0RH29, Lock Street, Darlington, DL3 0RH
• Sold May 2024£86,500 | 3 Bed House88, Brougham Street, Darlington, DL3 0NA88, Brougham Street, Darlington, DL3 0NA
• Sold Mar 2024£100,000 | 3 Bed House111, Brougham Street, Darlington, DL3 0NA111, Brougham Street, Darlington, DL3 0NA
• Sold Nov 2023£82,000 | 3 Bed House151, Thompson Street West, Darlington, DL3 0HJ151, Thompson Street West, Darlington, DL3 0HJ
• Sold Dec 2022£50,000 | 3 Bed House110, Lansdowne Street, Darlington, DL3 0NH110, Lansdowne Street, Darlington, DL3 0NH
• Sold Nov 2022£82,000 | 3 Bed House114, Brougham Street, Darlington, DL3 0NA114, Brougham Street, Darlington, DL3 0NA
• Sold Oct 2021£77,000 | 3 Bed House7, Spring Hill, Darlington, DL3 0RB7, Spring Hill, Darlington, DL3 0RB
• Sold Aug 2021£72,000 | 3 Bed House137, Lansdowne Street, Darlington, DL3 0NH137, Lansdowne Street, Darlington, DL3 0NH

Of the 26 addresses on Lock Street, Darlington, DL3, 21, Lock Street, Darlington comes out as the 5th largest and the 5th most expensive in our analysis of the public data.

It is also £89k less expensive than the average property across the DL3 district.

• Northwood Primary School

  700 m away
• Harrowgate Hill Primary School

  700 m away
• Reid Street Primary School

  1.1 km away

• Longfield Academy

  700 m away
• Haughton Academy

  1.9 km away
• St Aidan's Church of England Academy

  2.4 km away

• North Road (Darlington)

  |

  700 m away
• Darlington

  |

  2.5 km away
• Heighington

  |

  6.3 km away

The flood risk here is rated Very Low, based on Environment Agency data.