Over the past 29 years, there have been 45 property sales recorded in the CM21 9AT postcode area. The highest sale price reached £1,200,000, while the most recent sale was for a semi-detached house sold in February 2026 for £375,000.

The estimated average property value in CM21 9AT currently stands at £714,516, which is approximately 37.3% higher than the city average, indicating a potentially more desirable or in-demand location.

In terms of size, the average price per square metre is approximately £5,328.

Property prices in CM21 9AT have risen by 2% over the past year , with a total increase of 13.3% over the past five years , and a long-term rise of 40.7% over the past decade .

The most common type of property sold in the area is terraced, making up around 38% of transactions , followed by semi-detached and detached.

Housing in CM21 9AT is predominantly owner-occupied, with an estimated 94% of homes being lived in by the owners.

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Property Sales

10 Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

Today
£1,048,663
streetscan.co.uk estimate
16 Aug 1996
£170,000

11 Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

🏠 Terraced
🛏️ 4bed
📐 560 sq ft
Today
£328,290
streetscan.co.uk estimate
28 Mar 2025
£310,000
More details

12 Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

🏠 Semi-detached
🛏️ 7bed
📐 1582 sq ft
Today
£877,369
streetscan.co.uk estimate
9 Jun 2015
£606,137
More details

13 Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

🏠 Terraced
🛏️ 4bed
📐 603 sq ft
Today
£426,100
streetscan.co.uk estimate
17 Dec 2021
£375,000
25 Oct 2013
£210,000
View +1 more
More details

14 Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

🏠 Semi-detached
🛏️ 4bed
📐 872 sq ft
Today
£443,333
streetscan.co.uk estimate
12 May 2010
£236,500
28 Jun 2006
£222,000
View +3 more
More details

15 Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

Today
£258,406
streetscan.co.uk estimate
5 Nov 2007
£194,000

16 Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

Today
£1,044,159
streetscan.co.uk estimate
13 Dec 2022
£985,000
31 Mar 2017
£795,000

17A Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

🏠 Detached
🛏️ 6bed
📐 1884 sq ft
Today
£942,579
streetscan.co.uk estimate
14 Apr 2016
£745,000
More details

18 Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

🏠 Terraced
🛏️ 4bed
📐 915 sq ft
Today
£475,712
streetscan.co.uk estimate
26 Aug 2004
£229,995
22 Nov 1996
£85,250
More details

2 Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

🏠 Terraced
🛏️ 6bed
📐 2007 sq ft
Today
£747,881
streetscan.co.uk estimate
7 Nov 2014
£500,000
3 Sep 2010
£435,000
View +1 more
More details

20 Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

🏠 Terraced
🛏️ 4bed
📐 1184 sq ft
Today
£707,578
streetscan.co.uk estimate
21 May 2020
£598,000
11 Feb 2014
£470,000
View +1 more
More details

21 Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

🏠 Detached
🛏️ bed
📐 2519 sq ft
Today
£419,913
streetscan.co.uk estimate
29 Aug 2014
£279,000
15 Jan 2013
£499,950
More details

25 Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

🏠 Terraced
🛏️ 6bed
📐 1087 sq ft
Today
£568,133
streetscan.co.uk estimate
12 Jan 2004
£250,000
14 Mar 1997
£61,000
More details

25A Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

🏠 Semi-detached
🛏️ bed
📐 1023 sq ft
Today
£543,413
streetscan.co.uk estimate
6 Feb 2025
£505,000
19 Jul 2019
£420,000
More details

25B Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

🏠 Terraced
🛏️ bed
📐 1163 sq ft
Today
£558,316
streetscan.co.uk estimate
27 Aug 2019
£465,000
More details

25C Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

🏠 Detached
🛏️ bed
📐 1367 sq ft
Today
£638,393
streetscan.co.uk estimate
21 Jun 2019
£550,000
More details

25D Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

🏠 Terraced
🛏️ bed
📐 1130 sq ft
Today
£452,157
streetscan.co.uk estimate
26 Apr 2019
£380,000
30 Jun 2017
£500,000
More details

2A Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

🏠 Semi-detached
🛏️ 4bed
📐 797 sq ft
Today
£397,004
streetscan.co.uk estimate
31 Aug 2018
£342,000
3 Mar 2006
£195,000
More details

2B Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

🏠 Semi-detached
🛏️ 3bed
📐 721 sq ft
Today
£378,568
streetscan.co.uk estimate
26 Feb 2026
£375,000
More details

4 Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

🏠 Detached
🛏️ 10bed
📐 3035 sq ft
Today
£2,170,435
streetscan.co.uk estimate
29 Jun 2010
£1,200,000
More details

6 Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

Today
£1,333,733
streetscan.co.uk estimate
21 Feb 2006
£642,500

8 Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

🏠 Detached
🛏️ 7bed
📐 1602 sq ft
Today
£1,044,177
streetscan.co.uk estimate
12 Nov 1998
£250,000
More details

9 Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

🏠 Terraced
🛏️ 4bed
📐 623 sq ft
Today
£378,982
streetscan.co.uk estimate
29 Aug 2012
£211,500
29 Jun 2007
£194,000
More details

Blenheim House, 23 Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

Today
£724,797
streetscan.co.uk estimate
25 Nov 2013
£430,000
28 Apr 2006
£395,000

Eden House, 21A Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

Today
£1,071,061
streetscan.co.uk estimate
16 Feb 2022
£1,000,000

Tregonna House, 21 Knight Street, Sawbridgeworth, East Hertfordshire, Hertfordshire, CM21 9AT

Today
£1,126,761
streetscan.co.uk estimate
27 Sep 2021
£1,000,000

Area Insights

Data Sources

Properties at CM21 9AT appear fourty-five times in the Land Registry records, with the latest transaction recorded on 26 Feb 2026. It also has nineteen Energy Performance Certificates (EPC) entries, the earliest dating back to 22 Oct 2011. We use this data, to estimate the property's characteristics and current market value.

This website uses public sector information from:

These datasets are licensed under the Open Government Licence v3.0.
This website is not affiliated with or endorsed by HM Land Registry or DLUHC.

Disclaimer: StreetScan.co.uk makes all reasonable efforts to ensure the information provided on this website is current and accurate; however, no warranties or representations are made as to its completeness or accuracy. StreetScan.co.uk expressly disclaims any and all liability for any loss, damage, or expense arising directly or indirectly from the use of, or reliance upon, such information.