12a, Flat, St Thomas Street, Weymouth, DT4 8EW
About 12a
12a is a mid-terrace house in Weymouth (DT4 8EW). It has a recorded floor area of 109 m² (around 1173 sq ft), construction records dating it to 1976-1982 and council tax band B. The latest certificate (March 2020) shows a C (score 69), just inside the C band. When first surveyed in February 2009 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Average and roof efficiency went from Very Poor to Poor; while window efficiency dropped from Average to Poor and hot-water efficiency dropped from Very Good to Good.
At 109 m² the property is well over the postcode median (56 m² across 12 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 75% of similar EPCs). One historical planning record sits against the property in 2000.
Know exactly what you're buying at 12a
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
Wall insulation improved
Roof insulation improved
Planning history
- Jul 2000AmendmentIn report
Change of use to Class A2 to include replacement shopfront
- Council
- Weymouth and Portland
- Reference
- 00/00305/COU
We flagged 2 things worth checking at 12a
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Signs of HMO activity in the area
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
12a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£226,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in DT4 8EW: £120,000 (2025–2017).
Nearby sales in DT4 8EW
Flat 3, 13 St Thomas Street, Weymouth, DT4 8EW
Sold Mar 2025
£57,500Flat 2, 13 St Thomas Street, Weymouth, DT4 8EW
Sold Apr 2023
£60,000Flat 1, 13 St Thomas Street, Weymouth, DT4 8EW
Sold Nov 2021
£140,0005a, St Thomas Street, Weymouth, DT4 8EW
Sold Nov 2017
£253,00011a, St Thomas Street, Weymouth, DT4 8EW
Sold Mar 2017
£210,000
Everything we know about 12a, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Signs of HMO activity in the area
- Larger development activity nearby

Versus other St Thomas Street homes
On floor area, 12a stands well clear of the street.
EPC Rating
69 (C)
Street avg 57 (D)
Floor Area
109 m²
Street avg 66 m²
CO₂ Emissions
3.5 t/year
Street avg 3.8 t/year
Habitable Rooms
4 rooms
Street avg 3 rooms
Similar properties nearby
33a, Flat 1, St Thomas Street
DT4 8EJ
28a, Flat 2, Maiden Street
DT4 8BB
17 18, Flat, St Edmund Street
DT4 8AR
28a, Flat 1, Maiden Street
DT4 8BB
33a, Flat 2, St Thomas Street
DT4 8EJ
28a, Flat 3, Maiden Street
DT4 8BB
27a, Flat 1, Maiden Street
DT4 8BB
3 4, Flat, St Thomas Street
DT4 8EW
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
7/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Marks and Spencer — bus stop.
Closest school
1.1 km
Beechcroft St Paul's CofE Primary School. 12 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
53.0dB

Night-time· 23:00 – 07:00
43.3dB