12, Mariner Square, Sunderland has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 20 May 2017.

The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

Land Registry records and our Estate Agent network show 18 sales of comparable properties within 830 metres of 12, Mariner Square, Sunderland since 2007.

Most recently, 20, Maddison Court, Sunderland, SR1 2DZ, a freehold house, sold at £109,950 on the 17th December 2025.

Read more about house prices in SR1.

• Sold Dec 2025£109,950 | 3 Bed House20, Maddison Court, Sunderland, SR1 2DZ20, Maddison Court, Sunderland, SR1 2DZ
• Sold Oct 2025£82,500 | 3 Bed House24, Maddison Court, Sunderland, SR1 2DZ24, Maddison Court, Sunderland, SR1 2DZ
• Sold Apr 2024£87,500 | 3 Bed House16, Minorca Close, Sunderland, SR1 2PF16, Minorca Close, Sunderland, SR1 2PF
• Sold Jan 2024£89,995 | 3 Bed House3, Nesham Terrace, Sunderland, SR1 2DY3, Nesham Terrace, Sunderland, SR1 2DY
• Sold Oct 2022£95,000 | 3 Bed House29, Stafford Street, Sunderland, SR1 2DJ29, Stafford Street, Sunderland, SR1 2DJ
• Sold Oct 2022£85,500 | 3 Bed House10, Mariner Square, Sunderland, SR1 2DX10, Mariner Square, Sunderland, SR1 2DX
• Sold Oct 2021£85,000 | 3 Bed House5, Mariner Square, Sunderland, SR1 2DX5, Mariner Square, Sunderland, SR1 2DX
• Sold Mar 2021£70,000 | 3 Bed House9, Warren Square, Sunderland, SR1 2DU9, Warren Square, Sunderland, SR1 2DU
• Sold Jan 2021£80,000 | 3 Bed House28, Mariner Square, Sunderland, SR1 2DX28, Mariner Square, Sunderland, SR1 2DX
• Sold Oct 2020£65,000 | 3 Bed House23, Warren Square, Sunderland, SR1 2DU23, Warren Square, Sunderland, SR1 2DU
• Sold Aug 2018£70,000 | 3 Bed House12, Nesham Terrace, Sunderland, SR1 2DY12, Nesham Terrace, Sunderland, SR1 2DY
• Sold Aug 2015£69,950 | 3 Bed House5, Maddison Court, Sunderland, SR1 2DZ5, Maddison Court, Sunderland, SR1 2DZ
• Sold Sep 2014£57,000 | 3 Bed House22, Warren Square, Sunderland, SR1 2DU22, Warren Square, Sunderland, SR1 2DU
• Sold Jan 2014£54,000 | 3 Bed House21, Warren Square, Sunderland, SR1 2DU21, Warren Square, Sunderland, SR1 2DU
• Sold Apr 2010£72,000 | 3 Bed House19, Maddison Court, Sunderland, SR1 2DZ19, Maddison Court, Sunderland, SR1 2DZ
• Sold Aug 2009£65,000 | 3 Bed House6, Maddison Court, Sunderland, SR1 2DZ6, Maddison Court, Sunderland, SR1 2DZ
• Sold Dec 2007£95,995 | 3 Bed House3, Stafford Street, Sunderland, SR1 2DJ3, Stafford Street, Sunderland, SR1 2DJ
• Sold Sep 2007£50,000 | 3 Bed House12, James Williams Street, Sunderland, SR1 2JS12, James Williams Street, Sunderland, SR1 2JS

Our analysis of the public data ranks 12, Mariner Square, Sunderland as the 17th largest and the 17th most expensive of the 40 addresses on Mariner Square, Sunderland, SR1.

Against the SR1 postcode district average, it is £94k less expensive than the typical property.

• Dame Dorothy Primary School

  700 m away
• Hudson Road Primary School

  1.0 km away
• Redby Academy

  1.6 km away

• St Anthony's Girls' Catholic Academy

  2.0 km away
• Thornhill Academy

  2.3 km away
• Southmoor Academy

  2.4 km away

• Sunderland

  |

  1.2 km away
• Seaham

  |

  8.4 km away
• Heworth

  |

  13.0 km away

Environment Agency data suggests this area has a Very Low risk of flooding.