20, Mariners Way, SR7 7EB

20 Mariners Way is a 49 m² / 527 sq ft flat in Seaham. It sold for £68,000 in December 2012, recorded as a new-build sale. Indexed forward to today's value, that sale is roughly £53k. Recent local prices imply a broad valuation context of £42k to £112k based on its internal area. The Land Registry and EPC data was last updated 2 July 2026.

Property data
Sale history
£68,000 on Dec 2012 New build New
Internal area
49 square metres (527 square feet) according to latest EPC inspection
Price per internal area

This property sold for £1,387 per square metre (£129 per square foot) in Dec 2012. Indexed forward to today's value, this is roughly £1,089 per square metre (£101 per square foot) .

Date Paid price Paid £/sqm Today's value Today's value £/sqm
Dec 2012 £68,000 £1,388 £53,376 £1,089

Calculated using the latest EPC internal area of 49 m². Earlier sale dates may not have had the same measured area available.

Valuation
The most recent sale price indexed forward to today's value is £53,376. This is one data point to inform the valuation. Another method is the valuation implied by what comparable homes are selling for. Homes in Seaham are now selling for between £850 and £2,280 per square metre (£78 and £211 per square foot). Based on an internal area of 49 m², this implies a valuation between £42,000 and £112,000. Treat this as context only. For a valuation using hand-picked comparable sales, use the Advanced search tool — create a shortlist of similar condition homes, then export a valuation report.
Bedrooms
2
Type
Flat
Council tax band
B
Company ownership
Title number
DU336319
Tenure
Leasehold/other
Title address
20 Mariners Way, Seaham
Owner
GRAYSMITH INVESTMENTS LIMITED
Incorporated in HONG KONG
Proprietor address: House B, 1F Tak Wai Garden, Kap Pin Jung, Sai Kung, Hong Kong
Ownership record added to Land Registry's corporate ownership dataset 24 May 2016
EPC Inspections
Summary:
22 September 2022 - energy performance certificate grade B
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
Rental
Tenure:
Private rental
Property type:
2nd floor flat in an apartment block with 1 storeys , has 3 habitable rooms. Estimated year built 2007 to 2011
Area:
50 sqm (538 square foot) total internal area
Comments:
Walls: Cavity wall, as built, insulated (assumed). Roof: (another dwelling above). Heating: Boiler and radiators, mains gas.
Summary:
15 November 2012 - energy performance certificate grade B
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
New dwelling
Tenure:
Unknown
Property type:
2nd floor flat in an apartment block with 1 storeys Estimated year built None to None
Area:
49 sqm (527 square foot) total internal area
Comments:
Roof: (other premises above). Heating: Boiler and radiators, mains gas.
Frequently asked questions

20 Mariners Way is worth whatever price a willing buyer and seller agree upon. However, the following can provide useful context.

  • HouseMetric estimates the most recent sale price indexed forward to today's value is £53,376.
  • Based on an internal area of 49 m² and recent prices in Seaham, this implies a lower and upper quartile range from £42,000 to £112,000, using HouseMetric's implied valuation methodology.

According to HM Land Registry price paid data, 20 Mariners Way last sold for £68,000 in December 2012. The transaction was recorded as a new-build sale.

HouseMetric shows 20 Mariners Way as 49 m² (527 sq ft), based on the latest internal area data available for this property. The bedroom count is shown as 2 bedrooms. Bedroom numbers can come from a previous estate agency listing, an EPC record, or an estimate based on the size of the property.

The latest EPC rating shown by HouseMetric is B, from an inspection dated 22 September 2022. EPC information comes from the public Energy Performance Certificate data for England and Wales.

When we last checked, 20 Mariners Way was in council tax band B. Council Tax bands can change, so check the latest Valuation Office Agency Council Tax list.

20 Mariners Way is in postcode SR7 7EB, in Seaham. You can also view HouseMetric's sold-price page for Mariners Way, SR7 7EB or analysis of the Seaham property market.

HouseMetric combines HM Land Registry price paid data, Energy Performance Certificate data and Ordnance Survey/open data. The data were last updated 2 July 2026. Figures such as indexed values and local valuation ranges are calculated estimates for context, while official records can change as public datasets are updated.

For more detail on HouseMetric data sources, update frequency and valuation methods, see the HouseMetric FAQs.