20c, Rosslyn Road, Watford, WD18 0JY
About 20c
20c is a mid-terrace house in Watford (WD18 0JY). It has a recorded floor area of 54 m² (around 581 sq ft) and construction records dating it to 1930-1949. The latest certificate (August 2025) shows a D (score 55), a step below the typical UK home. The rating has held steady at D across 2 certificates since April 2015. Between certificates, hot-water efficiency went from Very Poor to Average and main heating went from Very Poor to Poor; while wall efficiency dropped from Very Good to Very Poor and window efficiency dropped from Good to Very Poor. The recommended improvements would push it to C (score 79). Main heating runs on electricity. At 54 m² this is the 16th smallest of 22 units on EPC record in the building, where floor areas span 31–377 m². The building's EPC ratings span E to C across 22 units on file.
At 54 m² it's 25.6% larger than the typical home in the postcode (43 m² median across 21 EPCs).
Know exactly what you're buying at 20c
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
20c's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Hot water system upgraded
Planning history
20c has no planning applications on record.
Notable planning nearby
7applications of note in the surrounding area
We flagged 1 thing worth checking at 20c
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
20c has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£257,000
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 0JY: £242,000 (2023–2015).
Nearby sales in WD18 0JY
Flat 9, 14 Rosslyn Road, Watford, WD18 0JY
Sold Mar 2023
£250,000Flat 3, 14 Rosslyn Road, Watford, WD18 0JY
Sold Dec 2021
£242,000Flat 11, 14 Rosslyn Road, Watford, WD18 0JY
Sold Mar 2016
£243,000Flat 2, 14 Rosslyn Road, Watford, WD18 0JY
Sold Mar 2015
£191,000Flat 1, 14 Rosslyn Road, Watford, WD18 0JY
Sold Mar 2015
£206,500
Everything we know about 20c, 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 Rosslyn Road homes
On epc rating, 20c runs well behind the street norm.
EPC Rating
55 (D)
Street avg 71 (C)
Floor Area
54 m²
Street avg 47 m²
CO₂ Emissions
1.0 t/year
Street avg 1.8 t/year
Habitable Rooms
3 rooms
Street avg 2 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
0.2 km
Town Hall — bus stop.
Closest school
0.4 km
Watford St John's Church of England Primary 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
55.9dB
Night-time· 23:00 – 07:00
46.6dB