Sort by Most recent sale Address Highest price Highest £ per sqm Largest area Smallest area	Last sold	Price paid	Floor area (m²) Floor area (sq ft)	£ per m² £ per sq ft	Type	Sold	m² sq ft	£/m² £/sq ft
26, Harmer Green Lane, Welwyn, AL6 0AT	20 Aug 2025	£720,000 B	120 m² 1291 sqft	£6,000 £557	Detached (4 bed)
33, Harmer Green Lane, Welwyn, AL6 0AS	13 Mar 2025	£1,310,000	166 m² 1786 sqft	£7,891 £733	Detached (5 bed)
14, Harmer Green Lane, Welwyn, AL6 0AX	30 Oct 2024	£760,464	115 m² 1237 sqft	£6,612 £614	Detached (4 bed)
57, Harmer Green Lane, Welwyn, AL6 0AP -	17 Nov 2023	£700,000	140 m² 1506 sqft	£5,000 £464	Detached (4 bed)
47, Harmer Green Lane, Welwyn, AL6 0AP -	27 Oct 2023	£3,700,000	635 m² 6835 sqft	£5,826 £541	Detached (1 bed)
58, Harmer Green Lane, Welwyn, AL6 0AW	22 May 2023	£1,150,000			Detached (5 bed)
10, Harmer Green Lane, Welwyn, AL6 0AX -	17 Oct 2022	£800,000	106 m² 1140 sqft	£7,547 £701	Detached (4 bed)
6, Harmer Green Lane, Welwyn, AL6 0AD	26 Aug 2022	£1,012,000 B	170 m² 1829 sqft	£5,952 £552	Detached (5 bed)
38, Harmer Green Lane, Welwyn, AL6 0AT -	31 Mar 2022	£1,775,000	266 m² 2863 sqft	£6,672 £619	Detached (5 bed)
44a, Harmer Green Lane, Welwyn, AL6 0AT -	16 Dec 2021	£960,000	161 m² 1732 sqft	£5,962 £553	Detached (5 bed)
40, Harmer Green Lane, Welwyn, AL6 0AT -	03 Dec 2021	£1,726,000	385 m² 4144 sqft	£4,483 £416	Detached (5 bed)
16, Harmer Green Lane, Welwyn, AL6 0AX -	30 Sep 2021	£490,000	99 m² 1065 sqft	£4,949 £459	Semi-D (3 bed)
60, Harmer Green Lane, Welwyn, AL6 0AW -	16 Sep 2021	£1,780,000	235 m² 2529 sqft	£7,574 £703	Detached (4 bed)
18, Harmer Green Lane, Welwyn, AL6 0AX -	17 Dec 2020	£475,000	80 m² 861 sqft	£5,937 £551	Semi-D (3 bed)
22, Harmer Green Lane, Welwyn, AL6 0AX	26 Mar 2020	£2,000 B			Other
21, Harmer Green Lane, Welwyn, AL6 0AS -	22 Mar 2019	£775,000	150 m² 1614 sqft	£5,166 £479	Semi-D (3 bed)
48a, Harmer Green Lane, Welwyn, AL6 0AT -	05 Oct 2018	£1,885,000	353 m² 3799 sqft	£5,339 £496	Detached (3 bed)
42, Harmer Green Lane, Welwyn, AL6 0AT -	12 Nov 2015	£1,150,000	244 m² 2626 sqft	£4,713 £437	Detached (5 bed)
51b, Harmer Green Lane, Welwyn, AL6 0AP -	05 Jun 2015	£2,250,000	491 m² 5285 sqft	£4,582 £425	Detached
25, Harmer Green Lane, Welwyn, AL6 0AS -	04 Oct 2013	£850,000	245 m² 2637 sqft	£3,469 £322	Detached (5 bed)
23, Harmer Green Lane, Welwyn, AL6 0AS -	28 Aug 2013	£840,000	233 m² 2507 sqft	£3,605 £334	Detached (5 bed)
35, Harmer Green Lane, Welwyn, AL6 0AS -	08 Feb 2013	£735,000	170 m² 1829 sqft	£4,323 £401	Detached (4 bed)
32, Harmer Green Lane, Welwyn, AL6 0AT -	06 Feb 2012	£595,000	166 m² 1786 sqft	£3,584 £332	Detached (5 bed)
12, Harmer Green Lane, Welwyn, AL6 0AX -	25 Nov 2011	£480,000	85 m² 914 sqft	£5,647 £524	Detached (4 bed)
27, Harmer Green Lane, Welwyn, AL6 0AS -	21 Oct 2011	£776,000	123 m² 1323 sqft	£6,308 £586	Detached (4 bed)
51, Harmer Green Lane, Welwyn, AL6 0AP	23 Apr 2011	£2,080,000	622 m² 6695 sqft	£3,344 £310	Detached (5 bed)
44, Harmer Green Lane, Welwyn, AL6 0AT -	23 Mar 2011	£845,000	173 m² 1862 sqft	£4,884 £453	Detached (4 bed)
36, Harmer Green Lane, Welwyn, AL6 0AT -	16 Jul 2010	£775,000			Detached (5 bed)
56, Harmer Green Lane, Welwyn, AL6 0AW -	09 Oct 2009	£1,102,500	444 m² 4779 sqft	£2,483 £230	Detached (5 bed)
37, Harmer Green Lane, Welwyn, AL6 0AS -	25 Jun 2009	£625,000	183 m² 1969 sqft	£3,415 £317	Detached (5 bed)
26, Harmer Green Lane	£720,000 B Aug-2025	120 1291	6,000 557
33, Harmer Green Lane	£1,310,000 Mar-2025	166 1786	7,891 733
14, Harmer Green Lane	£760,464 Oct-2024	115 1237	6,612 614
57, Harmer Green Lane -	£700,000 Nov-2023	140 1506	5,000 464
47, Harmer Green Lane -	£3,700,000 Oct-2023	635 6835	5,826 541
58, Harmer Green Lane	£1,150,000 May-2023
10, Harmer Green Lane -	£800,000 Oct-2022	106 1140	7,547 701
6, Harmer Green Lane	£1,012,000 B Aug-2022	170 1829	5,952 552
38, Harmer Green Lane -	£1,775,000 Mar-2022	266 2863	6,672 619
44a, Harmer Green Lane -	£960,000 Dec-2021	161 1732	5,962 553
40, Harmer Green Lane -	£1,726,000 Dec-2021	385 4144	4,483 416
16, Harmer Green Lane -	£490,000 Sep-2021	99 1065	4,949 459
60, Harmer Green Lane -	£1,780,000 Sep-2021	235 2529	7,574 703
18, Harmer Green Lane -	£475,000 Dec-2020	80 861	5,937 551
22, Harmer Green Lane	£2,000 B Mar-2020
21, Harmer Green Lane -	£775,000 Mar-2019	150 1614	5,166 479
48a, Harmer Green Lane -	£1,885,000 Oct-2018	353 3799	5,339 496
42, Harmer Green Lane -	£1,150,000 Nov-2015	244 2626	4,713 437
51b, Harmer Green Lane -	£2,250,000 Jun-2015	491 5285	4,582 425
25, Harmer Green Lane -	£850,000 Oct-2013	245 2637	3,469 322
23, Harmer Green Lane -	£840,000 Aug-2013	233 2507	3,605 334
35, Harmer Green Lane -	£735,000 Feb-2013	170 1829	4,323 401
32, Harmer Green Lane -	£595,000 Feb-2012	166 1786	3,584 332
12, Harmer Green Lane -	£480,000 Nov-2011	85 914	5,647 524
27, Harmer Green Lane -	£776,000 Oct-2011	123 1323	6,308 586
51, Harmer Green Lane	£2,080,000 Apr-2011	622 6695	3,344 310
44, Harmer Green Lane -	£845,000 Mar-2011	173 1862	4,884 453
36, Harmer Green Lane -	£775,000 Jul-2010
56, Harmer Green Lane -	£1,102,500 Oct-2009	444 4779	2,483 230
37, Harmer Green Lane -	£625,000 Jun-2009	183 1969	3,415 317

The data above for Harmer Green Lane can be visualised as a scatter graph, this will show price trends over time.

The average price per square metre (per square foot) in Harmer Green Lane, Welwyn is £6,249 sqm (£580 per sq ft), this is calculated from the selling price of the 8 most recent sales.
The majority of homes in Welwyn are now selling for between £4,990 and £6,420 per square metre (£463 and £596 per square foot) , find out more in this local analysis of AL6 0 (Welwyn) house prices.
There are approximately 37 homes on Harmer Green Lane, we would have expected about 5 sales each year given that in the UK people sell their homes on average once every 7 years.
In the last 4 years there have been 8 property sales in Harmer Green Lane, averaging about 2 home sales per year .
The average size of all the properties on Harmer Green Lane is 268 m2 (2,884 sqft).