Property Data Search:

17B, DOUGLAS ROAD, HARPENDEN, AL5 2EN - £868,000

The information on this page is based on a number of underlying datasets, most of which are updated monthly. We maintain an update schedule which explains which version of each dataset we are currently relying on.

17B DOUGLAS ROAD is a small extended semi-detached house of 129m², built sometime between 1950 and 1966, which could now be worth an estimated £1,005,435. It was last sold for £868,000 in December 2020, which was around 33% above the average December 2020 semi-detached price in the St Albans local authority area. The most recent EPC inspection was June 2020, where the current energy rating was D, and the potential energy rating was C.

17B DOUGLAS ROAD Sold Prices

Land registry data shows two sales for 17B DOUGLAS ROAD since 1st January 1995. The below table shows the price paid for the two sales, along with the average semi-detached price in the St Albans local authority area for the corresponding sale date. Both of the two 17B DOUGLAS ROAD sales were for above the average price. The average price is sourced from the Office for National Statistics' House Price Index (HPI).

DatePriceHPI PriceVariation from HPI
2020
16 DEC
£868,000£650,542
up arrow
33% above HPI
2007
23 FEB
£535,000£373,485
up arrow
43% above HPI

17B DOUGLAS ROAD Price Paid vs. HPI Average

The below graph shows the average semi-detached house price in the St Albans local authority area over time, sourced from the HPI. The two 17B DOUGLAS ROAD sales from February 2007 and December 2020 have been plotted on the graph. A line has been extrapolated to show what the value of the property might have been over time, following each sale, had it maintained the same margin above or below the HPI (as a percentage). For example, the February 2007 sale was for 43% above the HPI. So the extrapolation line tracks at 43% above the HPI over time, until the December 2020 sale, where it falls to 33% above the HPI. The line then continues to track at 33% above the HPI.

17B, DOUGLAS ROAD, HARPENDEN, AL5 2EN: Price paid vs HM Land Registry's House Price Index

What might 17B DOUGLAS ROAD be worth now?

17B DOUGLAS ROAD might now be worth an estimated £1,005,435.

This is based on house price inflation of 15.8%, between December 2020 and February 2025, for semi-detached houses, in the St Albans local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 15.8% inflationary increase is applied to the most recent sale price for 17B DOUGLAS ROAD of £868,000 on 16th December 2020. For the value to have increased from £868,000 to £1,005,435 over the five years and ten months to February 2025, the following assumptions must hold true:

  • The value of 17B DOUGLAS ROAD has moved in line with the HPI for semi-detached houses in the St Albans local authority area.
  • The December 2020 sale price of £868,000 represented a fair market value for the property.
  • The size, condition, and specification of 17B DOUGLAS ROAD has not materially changed since December 2020.
Disclaimer: Please note that this is a theoretical estimate based on assumptions which may or may not be correct. It should not be relied on for any purpose.

How Large is 17B DOUGLAS ROAD?

17B DOUGLAS ROAD is 129m², which includes two extensions, according to the EPC inspection conducted in June 2020. This puts it in the smallest 30% of semi-detached houses houses in Harpenden, based on EPC data. The below chart shows the distribution of semi-detached houses houses by size in Harpenden, and where 17B DOUGLAS ROAD lies on this distribution: 26% of semi-detached houses houses are smaller than 17B DOUGLAS ROAD, and 74% of houses are larger. Note that EPC data is not available for all properties in Harpenden.

17B, DOUGLAS ROAD, HARPENDEN, AL5 2EN: Size of property relative to semi-detached houses houses in Harpenden

17B DOUGLAS ROAD: Plot and Title Map

17B DOUGLAS ROAD sits on a plot of roughly 0.082 of an acre, or 331m². The below map shows the location of 17B DOUGLAS ROAD, an approximate outline of the building(s), and the indicative extent of the property. The plot extent is a Land Registry INSPIRE Index Polygon, and it is important to note that a title may include more than one polygon, whereas only one polygon is shown on the map (the polygon which intersects with the position of 17B DOUGLAS ROAD). The full extent of the land contained in any registered title can only be identified from the individual title plan. The maps on this page should not be relied upon to establish the extent of a title.

17B, DOUGLAS ROAD, HARPENDEN, AL5 2EN: Plot and title map

Where is 17B DOUGLAS ROAD?

17B DOUGLAS ROAD is located in HARPENDEN, in the AL5 postcode district. The below map shows the position of No. 17B on DOUGLAS ROAD.

17B, DOUGLAS ROAD, HARPENDEN, AL5 2EN: Location map and indicative extent of plot

All property sales on DOUGLAS ROAD

Most recent sales first:

Limited data available
2025
21 JAN
£515,000
Limited data available
2024
3 APR
£1,600,000
Full data available
2024
7 MAR
£1,735,000
Limited data available
2024
27 FEB
£500,000
Full data available
2024
26 JAN
£1,500,000
Full data available
2023
6 JUN
£1,600,000
Limited data available
2023
5 APR
£382,500
Limited data available
2023
3 APR
£405,000
Full data available
2022
15 DEC
£1,717,500
Limited data available
2022
25 NOV
£390,000
Limited data available
2022
17 JUN
£520,000
Full data available
2022
7 JAN
£3,090,000
Limited data available
2021
4 NOV
£1,835,000
Full data available
2021
28 JUN
£1,150,000
Limited data available
2021
16 APR
£500,000
Limited data available
2021
9 MAR
£385,000
Full data available
2020
16 DEC
£868,000
Limited data available
2020
21 AUG
£693,000
Limited data available
2019
20 NOV
£500,000
Limited data available
2019
4 JUL
£368,000
Limited data available
2019
31 MAY
£330,000
Limited data available
2018
20 NOV
£990,000
Limited data available
2018
14 SEP
£340,000
Limited data available
2018
14 SEP
£340,000
Limited data available
2018
25 JAN
£310,000
Full data available
2017
24 JUL
£1,560,000
Limited data available
2016
17 MAY
£545,000
Limited data available
2015
11 DEC
£385,000
Limited data available
2015
2 OCT
£460,000
Full data available
2015
1 SEP
£1,999,999
Full data available
2015
27 AUG
£1,550,000
Full data available
2015
13 AUG
£1,000,000
Full data available
2014
12 SEP
£925,000
Limited data available
2014
4 AUG
£275,000
Limited data available
2014
11 JUL
£311,000
Limited data available
2014
6 MAR
£425,000
Full data available
2013
6 SEP
£835,000
Full data available
2013
5 JUL
£1,125,000
Limited data available
2013
14 JUN
£270,000
Limited data available
2013
25 APR
£280,000
Full data available
2012
16 NOV
£1,300,000
Limited data available
2012
26 OCT
£980,000
Full data available
2012
18 SEP
£1,450,000
Limited data available
2012
30 MAY
£2,070,000
Full data available
2012
30 APR
£900,000
Limited data available
2012
24 APR
£250,000
Limited data available
2012
21 FEB
£240,000
Limited data available
2011
14 OCT
£350,000
Limited data available
2011
26 SEP
£345,000
Full data available
2011
17 JUN
£770,000
Full data available
2011
21 APR
£795,000
Limited data available
2011
4 APR
£207,500
Limited data available
2010
5 JAN
£237,000
Full data available
2009
17 NOV
£1,920,000
Full data available
2009
6 NOV
£1,250,000
Full data available
2009
17 JUL
£960,000
Full data available
2008
5 SEP
£1,100,000
Limited data available
2008
11 APR
£208,000
Limited data available
2007
2 NOV
£347,000
Limited data available
2007
23 FEB
£680,000
Full data available
2007
23 FEB
£535,000
Limited data available
2006
9 OCT
£395,000
Full data available
2006
11 SEP
£925,000
Limited data available
2006
7 JUL
£315,000
Limited data available
2006
22 MAY
£265,000
Limited data available
2006
23 MAR
£287,500
Limited data available
2006
6 FEB
£920,000
Full data available
2005
19 DEC
£550,000
Limited data available
2005
29 NOV
£190,000
Full data available
2005
28 JUL
£1,100,000
Limited data available
2005
11 FEB
£200,000
Full data available
2005
17 JAN
£540,000
Limited data available
2004
6 SEP
£600,000
Limited data available
2004
15 JUN
£202,000
Limited data available
2003
21 NOV
£760,000
Limited data available
2003
18 AUG
£290,000
Limited data available
2003
12 MAR
£465,000
Limited data available
2003
24 JAN
£185,000
Full data available
2002
9 SEP
£590,000
Limited data available
2002
6 MAR
£298,000
Limited data available
2002
15 FEB
£170,000
Limited data available
2002
15 FEB
£176,000
Full data available
2001
14 SEP
£545,000
Limited data available
2001
15 AUG
£310,000
Full data available
2001
12 JUL
£379,000
Full data available
2000
19 DEC
£497,500
Limited data available
2000
10 NOV
£129,000
Limited data available
2000
10 NOV
£130,000
Limited data available
2000
16 AUG
£140,000
Full data available
2000
21 JUL
£525,000
Limited data available
2000
8 FEB
£260,000
Limited data available
2000
14 JAN
£127,750
Full data available
1999
28 SEP
£445,000
Limited data available
1999
6 SEP
£129,950
Limited data available
1999
27 AUG
£135,000
Full data available
1999
26 AUG
£330,000
Full data available
1999
25 JUN
£295,000
Limited data available
1999
2 JUN
£119,950
Limited data available
1999
1 APR
£155,000
Limited data available
1998
21 AUG
£94,000
Limited data available
1998
24 JUL
£152,500
Limited data available
1998
22 MAY
£200,000
Full data available
1998
8 MAY
£299,950
Limited data available
1997
1 DEC
£88,000
Limited data available
1997
25 APR
£170,000
Limited data available
1996
1 NOV
£116,000
Limited data available
1996
1 AUG
£112,000
Full data available
1996
31 JUL
£458,000
Limited data available
1996
10 JUL
£74,000
Limited data available
1996
27 JUN
£480,000
Full data available
1996
29 MAR
£180,000
Limited data available
1996
1 MAR
£206,000
Limited data available
1996
16 FEB
£75,000
Full data available
1995
12 DEC
£212,000
Full data available
1995
31 AUG
£300,000
Limited data available
1995
16 JUN
£68,500
Full data available
1995
25 MAY
£295,000
Full data available
1995
26 JAN
£180,000
Source: HM Land Registry Price Paid Data
Licence: Contains HM Land Registry data © Crown copyright and database right 2025. This data is licensed under the Open Government Licence v3.0.
Source: HM Land Registry UK House Price Index
Licence: Contains HM Land Registry data © Crown copyright and database right 2025. This data is licensed under the Open Government Licence v3.0.
Copyright statement: This information is subject to Crown copyright and database rights 2025 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2025 Ordnance Survey 100026316. Conditions of use.