21 Havannah Street, Cardiff, CF10 5SF
About 21 Havannah Street
21 Havannah Street is a one-bedroom mid-terrace house in Cardiff (CF10 5SF). It has a recorded floor area of 42 m² (around 452 sq ft), construction records dating it to 1996-2002 and council tax band F. The latest certificate (December 2023) returns a high B (score 85), putting the home a stone's throw from an A rating. When first surveyed in October 2008 the rating was C, the property has climbed 1 band since. Between certificates, window efficiency went from Average to Good, hot-water efficiency went from Poor to Average and lighting went from Very Poor to Very Good. Main heating runs on electricity. At 42 m² this is the 6th smallest of 56 units on EPC record in the building, where floor areas span 38–118 m². The building's EPC ratings span E to B, with this unit at the top.
Held since July 2003 — that's 23 years off the open market, well above the local norm. Across 2002–2003, sale prices on this property compounded at 8% per year. On a £-per-square-foot basis, the last sale (£418/sq ft) was about 22.7% above the typical sold price in the postcode.
What this property has
Inside
- Bedrooms1
- Bathrooms1
Everything you need to know about 21 Havannah Street
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
21 Havannah Street's carbon output is low for the local stock.
EPC Rating
Certificate validity
Valid until 5 December 2033
Property Improvements
Changes detected from historical EPC data
Heating system changed
Heating controls upgraded for better temperature management
Hot water system changed
Window efficiency improved
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
21 Havannah Street 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
21 Havannah Street changed hands twice within eighteen months — unusual for the area.
£176,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.0% per year over 1 year.
£189,000
Growth on file: 8.0% per year over 1 year.
Sales timeline
2 July 2003Most recent
£189,000
+8.0%over 6 months20 December 2002
£175,000
Median price across the last 5 sales in CF10 5SF: £190,000 (2025–2024).
Nearby sales in CF10 5SF
Versus other Havannah Street homes
Price per m² for 21 Havannah Street runs comfortably ahead of the street norm.
Price per m²
£4,500
Street avg £3,554
Floor Area
42 m²
Street avg 53 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
CO₂ Emissions
1.2 t/year
Street avg 1.9 t/year
Everything you need to know about 21 Havannah Street
The true value, the hidden risks and the full sale history, in one report.
Pick your report · from £14.99
One time fee only - money back guarantee
The data behind every report
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
485/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Sovereign Quay Waterbus Stop — ferry terminal.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.