33a, Cardiff Road, Watford, WD18 0DS
About 33a
33a is a detached house in Watford (WD18 0DS). It has a recorded floor area of 76 m² (around 818 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (June 2025) shows a D (score 56), a step below the typical UK home. The rating has held steady at D across 3 certificates since December 2011. Between certificates, wall efficiency went from Very Poor to Good and lighting went from Good to Very Good; while hot-water efficiency dropped from Good to Very Poor and main heating dropped from Good to Very Poor. The recommended improvements would push it to C (score 77). Main heating runs on electricity. At 76 m² this is the 19th smallest of 28 units on EPC record in the building, where floor areas span 37–135 m². The building's EPC ratings span E to C across 28 units on file.
One historical planning record sits against the property in 2024.
Know exactly what you're buying at 33a
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
More low energy lighting installed
Heating system changed
Changed to a more efficient fuel source
Heating controls changed
Hot water system changed
Window efficiency improved
Wall insulation improved
Roof insulation improved
Planning history
- May 2024AnnexFullIn report
Extension: Rear of property
Conversion of outbuilding to residential accommodation for ground floor flat including infill rear extension and alterations to front elevation
Extension- Documents
- 14 docs on file
- Reference
- 24/00211/FUL
We flagged 1 thing worth checking at 33a
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
30-day money-back guarantee
Sales history & valuation
33a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£358,000
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 WD18 0DS: £315,000 (2025–2024).
Nearby sales in WD18 0DS
Everything we know about 33a, 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
Versus other Cardiff Road homes
On epc rating, 33a runs well behind the street norm.
EPC Rating
56 (D)
Street avg 66 (D)
Floor Area
76 m²
Street avg 50 m²
CO₂ Emissions
3.3 t/year
Street avg 2.3 t/year
Habitable Rooms
5 rooms
Street avg 3 rooms
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
8/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
Lammas Road — bus stop.
Closest school
0.2 km
Field Junior School. 36 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
53.8dB
Night-time· 23:00 – 07:00
44.6dB