21 Alconbury Close, Borehamwood, WD6 4QG
About 21 Alconbury Close
21 Alconbury Close is a three-bedroom mid-terrace house in Borehamwood (WD6 4QG). It has a recorded floor area of 114 m² (around 1227 sq ft), construction records dating it to 1996-2002 and council tax band E. The latest certificate (September 2019) shows a C (score 71). The rating has held steady at C across 2 certificates since November 2008. Between certificates, lighting went from Very Poor to Very Good; while roof efficiency dropped from Very Good to Good and window efficiency dropped from Good to Average. The recommended improvements would push it to B (score 85).
One planning record on file: a garage conversion approved in 2015. Past consents include a garage conversion, meaningful when judging how the property has evolved. Across 2006–2019, sale prices on this property compounded at 4.4% per year. Today's modelled estimate of £582,000 is 18.8% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£399/sq ft) was about 34.4% above the typical sold price in the postcode. Last sale on file: £490,000 in November 2019.
Know exactly what you're buying at 21 Alconbury Close
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms3
- Bathrooms2
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
More low energy lighting installed
Planning history
- May 2015Garage ConversionOutlineIn report
Garage conversion to habitable room. Certificate of Lawful Development (Proposed).
- Documents
- 6 docs on file
- Reference
- 15/0653/CLP
What's in 21 Alconbury Close, Borehamwood, WD6 4QG's planning history?
Refusals, disputes and full decisions on this property and nearby, in the report.
Sales history & valuation
21 Alconbury Close valuation sits well clear of the typical sold price in this postcode.
£582,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.4% per year over 13 years.
£490,000
Growth on file: 4.4% per year over 13 years.
Sales timeline
29 November 2019Most recent
£490,000
+50.8%over 9 years6 May 2010
£325,000
+16.1%over 3 years19 December 2006
£280,000
Median price across the last 5 sales in WD6 4QG: £565,000 (2025–2021).
Nearby sales in WD6 4QG
10 Alconbury Close, Borehamwood, WD6 4QG
Sold Mar 2025
£610,0009 Alconbury Close, Borehamwood, WD6 4QG
Sold Nov 2024
£512,50020 Alconbury Close, Borehamwood, WD6 4QG
Sold Jul 2022
£590,00023 Alconbury Close, Borehamwood, WD6 4QG
Sold May 2021
£565,0005 Alconbury Close, Borehamwood, WD6 4QG
Sold Mar 2021
£508,500
Everything we know about 21 Alconbury Close, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?

Versus other Alconbury Close homes
21 Alconbury Close is notably below the street on epc rating.
Price per m²
£4,298
Street avg £3,820
Floor Area
114 m²
Street avg 116 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
3.7 t/year
Street avg 2.8 t/year
Similar properties nearby
The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Anthony Road — bus stop.
Closest school
0.1 km
Meryfield Primary School. 17 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
48.9dB

Night-time· 23:00 – 07:00
38.2dB