Opera House, Flat 2, 23 Derby Street, Weymouth, DT4 7HX
About Opera House
Opera House is a one-bedroom semi-detached house in Weymouth (DT4 7HX). It has a recorded floor area of 41 m² (around 441 sq ft), construction records dating it to 1983-1990 and council tax band B. Tenure is freehold. At 41 m² this is the smallest unit on EPC record across Opera House (41–61 m²). The building's EPC ratings span E to B across 6 units on file. The latest certificate (December 2019) shows a D (score 59), a step below the typical UK home. The rating has held steady at D across 2 certificates since September 2009. Between certificates, lighting went from Good to Very Good; while window efficiency dropped from Good to Average. Main heating runs on electricity.
At 41 m² it sits well below the postcode median (68 m² across 46 EPCs), making it one of the more compact homes locally. Across 2003–2021, sale prices on this property compounded at -2.9% per year. Today's modelled estimate of £125,000 is 25% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£227/sq ft) was about 49.9% above the typical sold price in the postcode. Last sale on file: £100,000 in January 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at Opera House
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
What this property has
Inside
- Bedrooms1
- Bathrooms1
Outside
- Private gardenYes
- ParkingAllocated
Building
- TenureFreehold
- Heating systemElectric
- RefurbishedYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water system upgraded
More low energy lighting installed
Planning history
Opera House has no planning applications on record.
Notable planning nearby
5applications of note in the surrounding area
We flagged 3 things worth checking at Opera House
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
- Environmental risk flagged
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Sales history & valuation
Opera House's sale-price growth has lagged the wider UK trajectory across its history on file.
£125,000
Modelled from EPC, postcode comparables and a sale-price growth of -2.9% per year over 18 years.
£100,000
Growth on file: -2.9% per year over 18 years.
Sales timeline
29 January 2021Most recent
£100,000
-9.1%over 15 years6 October 2005
£110,000
-34.9%over 2 years14 March 2003
£169,000
Median price across the last 5 sales in DT4 7HX: £235,000 (2025–2022).
Nearby sales in DT4 7HX
Everything we know about Opera House, 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
- Environmental risk flagged

Versus other Derby Street homes
Opera House is notably below the street on epc rating.
Price per m²
£2,439
Street avg £2,273
Floor Area
41 m²
Street avg 47 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
CO₂ Emissions
2.5 t/year
Street avg 2.1 t/year
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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
Weymouth Rail Station — railway station.
Closest school
0.8 km
Coastland College. 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
53.5dB

Night-time· 23:00 – 07:00
43.7dB