17a, Addiscombe Road, Watford, WD18 0ND
About 17a
17a is a two-bedroom end-of-terrace house in Watford (WD18 0ND). It has a recorded floor area of 55 m² (around 592 sq ft), construction records dating it to 1900-1929 and council tax band B. At 55 m² this is the 11th smallest of 29 units on EPC record in the building, where floor areas span 14–154 m². The building's EPC ratings span E to C, with this unit at the top. The latest certificate (September 2019) shows a C (score 69), just inside the C band. When first surveyed in June 2009 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Poor to Average, hot-water efficiency went from Average to Good and main heating went from Average to Good; while lighting dropped from Good to Average.
At 55 m² it sits well below the postcode median (79 m² across 28 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 75% of similar EPCs). Across 1997–2017, sale prices on this property compounded at 8.3% per year. Today's modelled estimate of £267,000 is 21.4% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£372/sq ft) was about 58.2% above the typical sold price in the postcode. On the market in October 2017 and unlisted since — roughly 9 years.
Know exactly what you're buying at 17a
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
- Bedrooms2
- Bathrooms1
Outside
- ParkingOff road
Building
- Heating systemGas
- RefurbishedYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water system changed
Roof insulation improved
Low energy lighting percentage decreased
Heating controls upgraded for better temperature management
Hot water system upgraded
Planning history
17a has no planning applications on record.
Notable planning nearby
7applications of note in the surrounding area
We flagged 1 thing worth checking at 17a
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
17a has more than quadrupled in price since its earliest registered sale in 1997.
£267,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.3% per year over 20 years.
£220,000
Growth on file: 8.3% per year over 20 years.
Sales timeline
9 October 2017Most recent
£220,000
+87.2%over 13 years9 January 2004
£117,500
+167.0%over 6 years28 August 1997
£44,000
Median price across the last 5 sales in WD18 0ND: £412,000 (2025–2023).
Nearby sales in WD18 0ND
Everything we know about 17a, 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 Addiscombe Road homes
17a outperforms the street on floor area by a wide margin.
Price per m²
£4,000
Street avg £9,971
Floor Area
55 m²
Street avg 43 m²
Habitable Rooms
3 rooms
Street avg 2 rooms
CO₂ Emissions
2.3 t/year
Street avg 2.2 t/year
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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
Marlborough Road — bus stop.
Closest school
0.1 km
Chater Junior School. 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
55.1dB
Night-time· 23:00 – 07:00
46.1dB