8 St Marys Road, Watford, WD18 0EF
About 8 St Marys Road
8 St Marys Road is a one-bedroom mid-terrace house in Watford (WD18 0EF). It has a recorded floor area of 36 m² (around 388 sq ft), construction records dating it to 1900-1929 and council tax band B. At 36 m² this is the smallest unit on EPC record across the building (36–106 m²). The building's EPC ratings span F to C across 29 units on file. The latest certificate (December 2020) shows a D (score 56), a step below the typical UK home. The rating has held steady at D across 5 certificates since September 2009. Between certificates, hot-water efficiency went from Very Poor to Poor and lighting went from Average to Very Good; while main heating dropped from Poor to Very Poor. The recommended improvements would push it to C (score 69). Main heating runs on electricity.
Untraded for 20 years, with the last transfer in May 2006. Across the public record there are 4 sales, relatively high churn for a single property. Across 2003–2006, sale prices on this property compounded at 18.7% per year. Today's modelled estimate of £167,000 sits 67.8% above the 2006 sale of £99,500. On a £-per-square-foot basis, the last sale (£257/sq ft) was about 22.4% above the typical sold price in the postcode. At 36 m² it sits well below the postcode median (68 m² across 28 EPCs), making it one of the more compact homes locally. One historical planning record sits against the property in 2014.
Know exactly what you're buying at 8 St Marys Road
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
- Bathrooms2
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Replaced storage heaters with gas boiler
Connected to mains gas supply
Heating controls upgraded for better temperature management
Hot water system upgraded
Windows upgraded, improving insulation
Wall insulation improved
More low energy lighting installed
Heating system changed
Changed to a more efficient fuel source
Heating controls changed
Hot water system changed
Replaced storage heaters with gas boiler
Connected to mains gas supply
Heating controls upgraded for better temperature management
Hot water system upgraded
Windows upgraded, improving insulation
Roof insulation improved
Low energy lighting percentage decreased
Heating system changed
Changed to a more efficient fuel source
Heating controls upgraded for better temperature management
Hot water system changed
More low energy lighting installed
Planning history
- May 2014AmendmentIn report
Lawful Development Certificate for self contained ground floor flat.
- Documents
- 12 docs on file
- Reference
- 14/00441/LDC
We flagged 1 thing worth checking at 8 St Marys Road
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
8 St Marys Road changed hands twice within eighteen months — unusual for the area.
£167,000
Modelled from EPC, postcode comparables and a sale-price growth of 18.7% per year over 3 years.
£99,500
Growth on file: 18.7% per year over 3 years.
Sales timeline
17 May 2006Most recent
£99,500
+0.5%30 April 2006
£99,000
-27.2%over 2 years6 October 2003
£136,000
+127.0%31 May 2003
£59,900
Median price across the last 5 sales in WD18 0EF: £360,000 (2025–2016).
Nearby sales in WD18 0EF
Everything we know about 8 St Marys Road, 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

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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
0.1 km
Wiggenhall Road — bus stop.
Closest school
0.1 km
Watford Grammar School for Girls. 35 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
55.7dB

Night-time· 23:00 – 07:00
46.8dB