Maritime Buildings, Flat 12, St Thomas Street, Sunderland, SR1 1BL
About Maritime Buildings
Maritime Buildings is a semi-detached house in Sunderland (SR1 1BL). It has a recorded floor area of 48 m² (around 517 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (May 2025) shows a D (score 58), a step below the typical UK home. The rating has held steady at D across 3 certificates since January 2009. Between certificates, roof efficiency went from Good to Very Good; while wall efficiency dropped from Good to Poor. The recommended improvements would push it to C (score 79). Main heating runs on electricity. At 48 m² this is the 2nd smallest of 12 units on EPC record in Maritime Buildings, where floor areas span 46–85 m². The building's EPC ratings span E to C across 12 units on file.
Across 2004–2025, sale prices on this property compounded at -5.4% per year. Today's modelled estimate of £126,000 sits 215% above the 2025 sale of £40,000. On a £-per-square-foot basis, the last sale (£77/sq ft) was about 48.8% below the postcode norm. At 48 m² it sits well below the postcode median (70 m² across 11 EPCs), making it one of the more compact homes locally. Most recent transfer: January 2025 at £40,000.
Energy performance
EPC Rating
Certificate validity
Valid until 27 May 2035
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Windows upgraded, improving insulation
More low energy lighting installed
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, has no mains gas supply, and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
Maritime Buildings has no planning applications on record.
But the area is active
5 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
Maritime Buildings's sale-price growth has lagged the wider UK trajectory across its history on file.
£126,000
Modelled from EPC, postcode comparables and a sale-price growth of -5.4% per year over 20 years.
£40,000
Growth on file: -5.4% per year over 20 years.
Sales timeline
8 January 2025Most recent
£40,000
-60.0%over 17 years21 August 2007
£100,000
-18.7%over 2 years2 September 2004
£123,000
Median price across the last 5 sales in SR1 1BL: £62,500 (2024–2022).
Nearby sales in SR1 1BL
Maritime Buildings, Flat 5, St Thomas Street, Sunderland, SR1 1BL
Sold Nov 2024
£54,000Maritime Buildings, Flat 7, St Thomas Street, Sunderland, SR1 1BL
Sold Oct 2023
£62,500Maritime Buildings, Flat 11, St Thomas Street, Sunderland, SR1 1BL
Sold Aug 2022
£63,600Maritime Buildings, Flat 3, St Thomas Street, Sunderland, SR1 1BL
Sold Aug 2022
£30,000Maritime Buildings, Flat 10, St Thomas Street, Sunderland, SR1 1BL
Sold Jun 2021
£57,000
Versus other St Thomas Street homes
Maritime Buildings is notably below the street on years held.
Price per m²
£833
Street avg £1,077
Floor Area
48 m²
Street avg 67 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
CO₂ Emissions
3.3 t/year
Street avg 3.7 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
198/mo
Falling year-on-year across the wider district.
Nearest stop
0.1 km
John Street — bus stop.
Closest school
0.5 km
Hudson Road Primary School. 25 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
57.2dB

Night-time· 23:00 – 07:00
46.9dB







