21 Blake Close
AL1 5SG
- Detached
- Freehold
- 3 bedrooms (estimate)
- 936 sq ft
- EPC D
What comparable sales show
Strong match£713,000
Range £627,000 to £798,000 · £761 per sq ft
Since last sale
−£122,000
−14.6% since Nov 2024, −7.6% a year
Rank in AL1 5SG
6th of 15
Postcode average £854,400
From completed sales of similar homes nearby, adjusted for floor area. It cannot see condition, layout or recent work, so it is not a valuation.
In short
21 Blake Close is a 3 bedroom freehold detached in AL1 of about 936 sq ft.
Comparable completed sales nearby put it at £627,000 to £798,000, about £713,000 in the middle.
That makes it the 6th highest of the 15 homes we can compare in AL1 5SG, where the middle figure averages £854,400.
It last sold for £835,000 in November 2024; comparable sales suggest it has lost about £122,000 since, roughly −7.6% a year.
Across St Albans, average prices rose 3.2% in the year to August 2026.
Where in the range would yours sell?
Condition and improvements usually decide it, and only someone who sees the home can say.
Lower end
£627,000
Middle
£713,000
Upper end
£798,000
Done work since the records were made? Claim your home and tell us, or ask local agents where yours sits.
On the map
Where 21 Blake Close is
21 Blake Close on the map
This home and the completed sales its figure is worked out from. Choose a pin for the address, size and date.
The Land Registry records a sale by its postcode, so pins sit at the postcode, close to the home, not on its doorstep. Map: contains OS data © Crown copyright and database rights 2026.
Energy
How efficient the home is
Energy performance certificate
From the official register for 21 Blake Close, lodged 14 June 2017.
Rating now
D64 points
Could reach
B85 points
21 points higher with the improvements below
- Built
- 1976–1982
- Solar panels
- None recorded
What the assessor found
Each part of the home, with the certificate's own energy efficiency rating.
Walls
Cavity wall, as built, partial insulation (assumed)
AverageRoof
Pitched, 300 mm loft insulation
Very goodFloor
Solid, no insulation (assumed)
Not rated on the certificate
Windows
Fully double glazed
AverageHeating
Boiler and radiators, mains gas
GoodHeating controls
Programmer, room thermostat and TRVs
GoodHot water
From main system
GoodLighting
Low energy lighting in 44% of fixed outlets
AverageSecond heating
Room heaters, mains gas
Not rated on the certificate
Estimated running costs
A year, now and after the recommended improvements.
£278 a year less after the improvements
Heating
Hot water
Lighting
The assessor's estimates at the energy prices in use when the certificate was made (2017), for a typical household. Today's bills will differ.
Improvements the certificate recommends
In the certificate's order. Each rating assumes the steps before it are done.
- 1
Cavity wall insulation
Typical cost £500–£1,500 · saves about £146 a year
Rating after70C - 2
Floor insulation (solid floor)
Typical cost £4,000–£6,000 · saves about £60 a year
Rating after72C - 3
Low energy lighting for all fixed outlets
Typical cost £25 · saves about £27 a year
Rating after73C - 4
Solar water heating
Typical cost £4,000–£6,000 · saves about £45 a year
Rating after75C - 5
Solar photovoltaic panels, 2.5 kWp
Typical cost £5,000–£8,000 · saves about £285 a year
Rating after85B
Costs and savings are the certificate's own, as estimated when it was made.
History
What it has sold for
Sale history
Every sale of this home registered with HM Land Registry since 1995
| Sold | Price paid | Change | A year |
|---|---|---|---|
| November 2024 | £835,000 | +93.3% | +5.9% |
| May 2013 | £432,000 | First sale | – |
Nearby
Neighbours and the sales behind the figure
Homes in AL1 5SG
Ranked by what comparable sales show. Choose one to see its page.
The completed sales behind the figure
Similar homes nearby, registered with HM Land Registry. Choose one to see its page.
| Home | Price | Sold | Size | Per sq ft | Away |
|---|---|---|---|---|---|
| 13 Blake CloseAL1 5SG · Detached | £775,000 | Nov 2024 | 1,012 sq ft | £766 | < 0.1 mi |
| 5 Hopground CloseAL1 5TA · Detached | £773,500 | Mar 2026 | 1,087 sq ft | £711 | 0.1 mi |
| 40 FoxcroftAL1 5SP · Detached | £620,000 | Aug 2026 | 764 sq ft | £811 | 0.2 mi |
| 46 FoxcroftAL1 5SP · Detached | £910,000 | Oct 2025 | 1,173 sq ft | £776 | 0.2 mi |
| 22 Mile House LaneAL1 1TB · Detached | £965,000 | Oct 2025 | 1,195 sq ft | £808 | 0.2 mi |
| 18 Blake CloseAL1 5SG · Detached | £1,310,000 | Sept 2026 | 1,991 sq ft | £658 | < 0.1 mi |
| 2A FoxcroftAL1 5SN · Detached | £830,000 | Sept 2025 | 1,378 sq ft | £602 | 0.1 mi |
| 8 St Vincent DriveAL1 5SJ · Detached | £950,000 | May 2026 | 1,701 sq ft | £559 | 0.1 mi |
| 284B London RoadAL1 1HY · Detached | £782,500 | May 2026 | 1,625 sq ft | £481 | 0.2 mi |
| 15 FoxcroftAL1 5SW · Detached | £836,500 | Dec 2024 | 1,281 sq ft | £653 | 0.1 mi |
| 4 St Vincent DriveAL1 5SJ · Detached | £960,000 | Feb 2025 | 1,668 sq ft | £575 | 0.1 mi |
| 21 Mile House LaneAL1 1TF · Detached | £1,500,000 | Dec 2024 | 2,056 sq ft | £730 | 0.2 mi |
The area
AL1 at a glance
What buyers have paid in AL1
Completed sales in the last 12 months, against the 12 months before
Flats
Terraced
Semi-detached
Detached
| Type | Sales | Average price | Average size | Per sq ft | On the year |
|---|---|---|---|---|---|
| All homes | 409 | £656,290 | 1,053 sq ft | £632 | −1.1% |
| Flats | 158 | £324,501 | 603 sq ft | £515 | −10.8% |
| Terraced | 132 | £664,363 | 985 sq ft | £689 | −3.7% |
| Semi-detached | 76 | £842,975 | 1,293 sq ft | £672 | +0.6% |
| Detached | 36 | £1,424,576 | 2,075 sq ft | £716 | +4.2% |
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Contains HM Land Registry data © Crown copyright and database right 2026. Licensed under the Open Government Licence v3.0.
Energy performance data © Crown copyright. Licensed under the Open Government Licence v3.0.
Floor area and energy rating from the energy certificate of June 2017.
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