Over the past 17 years, there have been 42 property sales recorded in the SG3 6EL postcode area. The highest sale price reached £438,000, while the most recent sale was for a terraced flat sold in July 2025 for £300,000.

The estimated average property value in SG3 6EL currently stands at £359,044, which is approximately 35.5% lower than the city average - making it a relatively affordable option for buyers.

In terms of size, the average price per square metre is approximately £4,875.

Property prices in SG3 6EL have risen by 3.3% over the past year , with a total increase of 6.8% over the past five years, and a long-term rise of 29.6% over the past decade.

The most common type of property sold in the area is flat, making up around 98% of transactions , followed by other.

Housing in SG3 6EL is predominantly owner-occupied, with an estimated 82% of homes being lived in by the owners.

Click on the map to change the analyzed area

Property Sales

Apartment 1, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ 3bed
📐 677 sq ft
Today
£321,237
streetscan.co.uk estimate
14 Sep 2015
£256,000
15 Aug 2013
£185,000
More details

Apartment 10, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ 3bed
📐 818 sq ft
Today
£462,952
streetscan.co.uk estimate
23 Apr 2021
£438,000
2 Mar 2012
£295,000
More details

Apartment 11, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ 3bed
📐 936 sq ft
Today
£504,369
streetscan.co.uk estimate
25 Sep 2009
£300,000
More details

Apartment 12, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Other
🛏️ 2bed
📐 731 sq ft
Today
£334,077
streetscan.co.uk estimate
31 Jan 2022
£318,000
6 Jan 2012
£218,000
More details

Apartment 14, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ 3bed
📐 897 sq ft
Today
£371,071
streetscan.co.uk estimate
22 Mar 2012
£235,000
9 Sep 2011
£225,000
More details

Apartment 15, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ 3bed
📐 657 sq ft
Today
£383,841
streetscan.co.uk estimate
14 Sep 2023
£365,000
12 Oct 2012
£194,000
More details

Apartment 16, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ 2bed
📐 760 sq ft
Today
£302,675
streetscan.co.uk estimate
27 Jan 2017
£275,000
14 Nov 2012
£217,500
More details

Apartment 17, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ 2bed
📐 657 sq ft
Today
£297,902
streetscan.co.uk estimate
20 May 2022
£285,000
2 Oct 2012
£210,000
More details

Apartment 18, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ 2bed
📐 818 sq ft
Today
£313,897
streetscan.co.uk estimate
18 Jul 2025
£300,000
24 Aug 2015
£289,500
View +1 more
More details

Apartment 19, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ 3bed
📐 718 sq ft
Today
£343,945
streetscan.co.uk estimate
9 Jul 2014
£240,000
5 Jan 2012
£198,000
More details

Apartment 2, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ bed
📐 782 sq ft
Today
£351,014
streetscan.co.uk estimate
28 Jun 2017
£325,000
20 Oct 2010
£270,000
More details

Apartment 20, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ bed
📐 907 sq ft
Today
£398,390
streetscan.co.uk estimate
29 Jun 2021
£375,000
10 Aug 2009
£310,000
More details

Apartment 21, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ bed
📐 664 sq ft
Today
£361,807
streetscan.co.uk estimate
5 Jan 2015
£265,000
More details

Apartment 22, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ 2bed
📐 807 sq ft
Today
£302,217
streetscan.co.uk estimate
15 Dec 2017
£290,000
19 Oct 2012
£250,000
View +1 more
More details

Apartment 23, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ 2bed
📐 720 sq ft
Today
£351,014
streetscan.co.uk estimate
30 Jun 2017
£325,000
20 Sep 2011
£225,000
More details

Apartment 24, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ 3bed
📐 893 sq ft
Today
£433,777
streetscan.co.uk estimate
12 Oct 2023
£420,000
10 Jan 2020
£375,000
View +1 more
More details

Apartment 3, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ 2bed
📐 677 sq ft
Today
£323,173
streetscan.co.uk estimate
4 Jan 2013
£200,000
More details

Apartment 4, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ 3bed
📐 786 sq ft
Today
£328,792
streetscan.co.uk estimate
23 Nov 2016
£299,995
15 Mar 2010
£290,000
More details

Apartment 5, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ 2bed
📐 748 sq ft
Today
£352,286
streetscan.co.uk estimate
31 Jul 2012
£217,000
More details

Apartment 6, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ 3bed
📐 720 sq ft
Today
£383,785
streetscan.co.uk estimate
20 Sep 2019
£345,000
18 Sep 2012
£250,000
More details

Apartment 7, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ 3bed
📐 879 sq ft
Today
£385,727
streetscan.co.uk estimate
28 Oct 2011
£235,000
More details

Apartment 8, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ 3bed
📐 1095 sq ft
Today
£366,801
streetscan.co.uk estimate
19 Aug 2013
£227,000
More details

Apartment 9, Robert Ellis Court St Martins Road, Knebworth, North Hertfordshire, Hertfordshire, SG3 6EL

🏠 Flat
🛏️ bed
📐 997 sq ft
Today
£480,277
streetscan.co.uk estimate
15 Apr 2010
£300,000
More details

Area Insights

Data Sources

Properties at SG3 6EL appear fourty-two times in the Land Registry records, with the latest transaction recorded on 18 Jul 2025. It also has twenty-three Energy Performance Certificates (EPC) entries, the earliest dating back to 28 Jun 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.