Flat 9, 14 Rosslyn Road, Watford, WD18 0JY
About Flat 9
Flat 9 is a semi-detached house in Watford (WD18 0JY). It has a recorded floor area of 44 m² (around 474 sq ft) and construction records dating it to 2012-2021. The latest certificate (July 2025) shows a C (score 76), near the top of the C band. Earlier certificates rated it B (February 2015); the latest reading is one band lower. 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 Good and roof efficiency dropped from Very Good to Good. The recommended improvements would push it to B (score 82). Main heating runs on electricity. At 44 m² this is the 9th smallest of 11 units on EPC record in the building, where floor areas span 31–53 m².
Across 2015–2023, sale prices on this property compounded at 3.2% per year. Today's modelled estimate of £224,000 is 10.4% below the 2023 sale of £250,000, a rare downward gap that often correlates with deferred maintenance or unfinished works. Last sale on file: £250,000 in March 2023.
Know exactly what you're buying at Flat 9
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
Flat 9'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
Flat 9 has no planning applications on record.
Notable planning nearby
7applications of note in the surrounding area
We flagged 1 thing worth checking at Flat 9
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
Latest sale on Flat 9 was the highest on Land Registry record across the postcode.
£224,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.2% per year over 8 years.
£250,000
Growth on file: 3.2% per year over 8 years.
Sales timeline
14 March 2023Most recent
£250,000
+28.9%over 8 years27 February 2015
£194,000
Median price across the last 5 sales in WD18 0JY: £222,000 (2021–2015).
Nearby sales in WD18 0JY
Flat 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
£206,500Flat 4, 14 Rosslyn Road, Watford, WD18 0JY
Sold Mar 2015
£222,000
Everything we know about Flat 9, 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
Years Held for Flat 9 lags the street by a wide margin.
Price per m²
£5,682
Street avg £4,925
Floor Area
44 m²
Street avg 48 m²
Habitable Rooms
2 rooms
Street avg 2 rooms
CO₂ Emissions
0.5 t/year
Street avg 1.8 t/year
Similar properties nearby
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27 29, Flat 2, Granville Road
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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