8b, St Johns Road, Watford, WD17 1PT
About 8b
8b is an end-of-terrace house in Watford (WD17 1PT). It has a recorded floor area of 40 m² (around 431 sq ft), construction records dating it to before 1900 and council tax band C. At 40 m² this is the 8th smallest of 23 units on EPC record in the building, where floor areas span 16–171 m². The building's EPC ratings span F to C, with this unit at the top. The latest certificate (January 2026) shows a C (score 70). When first surveyed in February 2016 the rating was D, the property has climbed 1 band since. Between certificates, window efficiency went from Average to Good and lighting went from Poor to Good.
Most recent transfer: December 2022 at £232,500. Across the public record there are 5 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. Across 1999–2022, sale prices on this property compounded at 6.1% per year. On a £-per-square-foot basis, the last sale (£540/sq ft) was about 46.3% above the typical sold price in the postcode.
Energy performance
EPC Rating
Certificate validity
Valid until 6 January 2036
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
High performance glazing installed
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £885 · Includes VAT
Planning history
8b has no planning applications on record.
But the area is active
7 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
8b has more than quadrupled in price since its earliest registered sale in 1999.
£255,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.1% per year over 24 years.
£232,500
Growth on file: 6.1% per year over 24 years.
Sales timeline
20 December 2022Most recent
£232,500
-9.6%over 6 years21 September 2016
£257,050
+105.6%over 10 years27 October 2005
£125,000
+60.3%over 4 years23 November 2000
£78,000
+36.8%over 1 year29 April 1999
£57,000
Median price across the last 5 sales in WD17 1PT: £580,000 (2025–2022).
Nearby sales in WD17 1PT
Versus other St Johns Road homes
8b outperforms the street on co₂ emissions by a wide margin.
Price per m²
£5,813
Street avg £8,191
Floor Area
40 m²
Street avg 43 m²
Habitable Rooms
2 rooms
Street avg 2 rooms
CO₂ Emissions
1.6 t/year
Street avg 2.2 t/year
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
266/mo
Falling year-on-year across the wider district.
Nearest stop
0.2 km
St John's Road — bus stop.
Closest school
0.4 km
Watford St John's Church of England Primary School. 35 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
54.1dB

Night-time· 23:00 – 07:00
44.7dB







