Chiltern House, Flat 3, 24 King Street, Watford, WD18 0BP
About Chiltern House
Chiltern House is a property in Watford (WD18 0BP). It has a recorded floor area of 48 m² (around 517 sq ft), construction records dating it to 2012-2021 and council tax band C. At 48 m² this is the 6th smallest of 15 units on EPC record in Chiltern House, where floor areas span 42–104 m². The building's EPC ratings span E to C, with this unit at the top. The latest certificate (December 2025) shows a C (score 69), just inside the C band. When first surveyed in November 2015 the rating was E, the property has climbed 2 bands since. Between certificates, hot-water efficiency went from Very Poor to Average and main heating went from Very Poor to Poor; while lighting dropped from Very Good to Good. Main heating runs on electricity. This certificate was lodged in the last six months, so the rating reflects current condition.
Today's modelled estimate of £180,000 sits 94.6% above the 2015 sale of £92,500. On a £-per-square-foot basis, the last sale (£179/sq ft) was about 61.9% below the postcode norm. Last changed hands 10 years ago, in December 2015.
Know exactly what you're buying at Chiltern House
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
Chiltern House's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water system upgraded
Wall insulation upgraded
Planning history
Chiltern House has no planning applications on record.
Notable planning nearby
7applications of note in the surrounding area
We flagged 1 thing worth checking at Chiltern House
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 Chiltern House was the lowest on Land Registry record across the postcode.
£180,000
Modelled from EPC, postcode comparables.
£92,500
Recorded with HM Land Registry.
Sales timeline
7 December 2015Most recent
£92,500
Median price across the last 5 sales in WD18 0BP: £270,000 (2024–2017).
Nearby sales in WD18 0BP
Chiltern House, Unit 1 2, 24 King Street, Watford, WD18 0BP
Sold Aug 2024
£181,000Chiltern House, Flat 10, 24 King Street, Watford, WD18 0BP
Sold Mar 2024
£150,000Chiltern House, Flat 15, 24 King Street, Watford, WD18 0BP
Sold Sept 2019
£425,000Chiltern House, Flat 9, 24 King Street, Watford, WD18 0BP
Sold Jul 2018
£270,000Chiltern House, Flat 14, 24 King Street, Watford, WD18 0BP
Sold Oct 2017
£445,000
Everything we know about Chiltern House, 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 King Street homes
Price per m² for Chiltern House lags the street by a wide margin.
Price per m²
£1,927
Street avg £4,736
Floor Area
48 m²
Street avg 54 m²
Habitable Rooms
2 rooms
Street avg 2 rooms
CO₂ Emissions
0.7 t/year
Street avg 1.8 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
0.0 km
King Street — bus stop.
Closest school
0.2 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
56.8dB

Night-time· 23:00 – 07:00
48.1dB