37 Holywell Road, Watford, WD18 0HT
About 37 Holywell Road
37 Holywell Road is a semi-detached house in Watford (WD18 0HT). It has a recorded floor area of 108 m² (around 1163 sq ft), construction records dating it to 1900-1929 and council tax band D. At 108 m² this is the 29th smallest of 33 units on EPC record in the building, where floor areas span 42–362 m². The building's EPC ratings span E to C, with this unit at the top. The latest certificate (July 2025) shows a C (score 74). When first surveyed in September 2014 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Good and window efficiency went from Poor to Good; while roof efficiency dropped from Very Good to Poor and hot-water efficiency dropped from Good to Average.
7 planning records sit against the property, 2 approved, 1 refused, 1 pending. Past consents include an extension and a loft conversion, meaningful when judging how the property has evolved. An active application for subdivision is awaiting a decision. At 108 m² the property is well over the postcode median (70 m² across 32 EPCs), placing it in the larger end of the local stock. Across 2000–2023, sale prices on this property compounded at 7.9% per year. On a £-per-square-foot basis, the last sale (£430/sq ft) was about 90.6% above the typical sold price in the postcode. Last sale on file: £500,000 in October 2023.
Know exactly what you're buying at 37 Holywell 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
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
High performance glazing installed
Wall insulation improved
Floor insulation added or improved
More low energy lighting installed
Planning history
A subdivision application was refused at 37 Holywell Road in 2024.
- Sept 2024SubdivisionFullIn report
Change of Use of no.37 into 2 x 4 bed flats and associated works
- Documents
- 21 docs on file
- Reference
- 24/00864/FUL
- Sept 2024SubdivisionFullIn report
Change of Use of no.37 into x2 x4 bed flats and use of no.39 as 8 bed HMO (sui generis) with associated works.
HMO- Documents
- 23 docs on file
- Reference
- 24/00654/FUL
We flagged 2 things worth checking at 37 Holywell 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
- A planning decision worth checking
30-day money-back guarantee
Sales history & valuation
37 Holywell Road has more than quadrupled in price since its earliest registered sale in 2000.
£544,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.9% per year over 24 years.
£500,000
Growth on file: 7.9% per year over 24 years.
Sales timeline
24 October 2023Most recent
£500,000
+19.0%over 8 years5 January 2015
£420,000
+412.2%over 14 years28 February 2000
£82,000
Median price across the last 5 sales in WD18 0HT: £435,000 (2025–2021).
Nearby sales in WD18 0HT
Everything we know about 37 Holywell 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
- A planning decision worth checking

Versus other Holywell Road homes
On floor area, 37 Holywell Road stands well clear of the street.
EPC Rating
74 (C)
Street avg 66 (D)
Floor Area
108 m²
Street avg 48 m²
CO₂ Emissions
3.0 t/year
Street avg 2.6 t/year
Habitable Rooms
6 rooms
Street avg 2 rooms
Similar properties nearby
The neighbourhood at a glance
Crime
8/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Brightwell Road — bus stop.
Closest school
0.3 km
Laurance Haines 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
50.4dB

Night-time· 23:00 – 07:00
40.3dB