House prices in St Martins Road, Knebworth, SG3
86 homes have sold on St Martins Road (SG3) since 1995, the first in 1995. Over the last five years the median sold price was £395,000 from 9 sales, 15% below the Knebworth median of £463,750and against £463,750 across SG3. Sales here have been flats 82%, detached 14%, semi-detached 5%.
- Median sold price
- £395,000
- last five years · 9 sales
- Half of sales were above this price, half below
- Price per sq ft
- £507
- based on 9 of 9 sales
- Sales matched to an EPC floor area
- Sales since 1995
- 86
- 3 in the last 12 months
- Latest sale
- £300,000
- 18 Jul 2025
- vs Knebworth
- −15%
- Knebworth median £463,750
Every sale on St Martins Road, SG3
› Apartment 10, Robert Ellis Court SG3 6EL · Flats £415,000· 15 Apr 2026 · 3 sales
| 15 Apr 2026 | £415,000 | Flats · Leasehold | 818 sq ft · £507/sq ft | +41% vs 2012 |
| 23 Apr 2021 | £438,000 | Flats · Leasehold | 818 sq ft · £535/sq ft | first recorded sale |
| 2 Mar 2012 | £295,000 | Flats · Leasehold · New build | 818 sq ft · £361/sq ft | −33% vs 2021 |
› Apartment 18, Robert Ellis Court SG3 6EL · Flats £300,000· 18 Jul 2025 · 3 sales
| 18 Jul 2025 | £300,000 | Flats · Leasehold | 818 sq ft · £367/sq ft | first recorded sale |
| 24 Aug 2015 | £289,500 | Flats · Leasehold | 818 sq ft · £354/sq ft | −4% vs 2025 |
| 28 Feb 2013 | £200,000 | Flats · Leasehold · New build | 818 sq ft · £244/sq ft | −31% vs 2015 |
› Apartment 4, Robert Ellis Court SG3 6EL · Flats £395,000· 17 Jul 2025 · 3 sales
| 17 Jul 2025 | £395,000 | Flats · Leasehold | 786 sq ft · £503/sq ft | +36% vs 2010 |
| 23 Nov 2016 | £299,995 | Flats · Leasehold | 786 sq ft · £382/sq ft | −24% vs 2025 |
| 15 Mar 2010 | £290,000 | Flats · Leasehold · New build | 786 sq ft · £369/sq ft | first recorded sale |
› Flat 5, Gordon Court SG3 6DD · Flats £193,500· 20 Jun 2025 · 5 sales
| 20 Jun 2025 | £193,500 | Flats · Leasehold | 366 sq ft · £529/sq ft | first recorded sale |
| 8 Feb 2000 | £55,375 | Flats · Leasehold | 366 sq ft · £151/sq ft | +12% vs 1995 |
| 31 Jul 1999 | £45,000 | Flats · Leasehold | 366 sq ft · £123/sq ft | −77% vs 2025 |
| 6 Jan 1998 | £43,000 | Flats · Leasehold | 366 sq ft · £117/sq ft | −22% vs 2000 |
| 7 Feb 1995 | £49,500 | Flats · Leasehold · New build | 366 sq ft · £135/sq ft | +10% vs 1999 |
› 19 SG3 6ER · Detached £800,000· 25 Mar 2024
| 25 Mar 2024 | £800,000 | Detached · Freehold | 1,561 sq ft · £513/sq ft | first recorded sale |
› Apartment 24, Robert Ellis Court SG3 6EL · Flats £420,000· 12 Oct 2023 · 3 sales
| 12 Oct 2023 | £420,000 | Flats · Leasehold | 893 sq ft · £470/sq ft | +33% vs 2008 |
| 10 Jan 2020 | £375,000 | Flats · Leasehold | 893 sq ft · £420/sq ft | first recorded sale |
| 10 Oct 2008 | £316,000 | Flats · Leasehold · New build | 893 sq ft · £354/sq ft | −16% vs 2020 |
› Apartment 15, Robert Ellis Court SG3 6EL · Flats £365,000· 14 Sept 2023 · 2 sales
| 14 Sept 2023 | £365,000 | Flats · Leasehold | 657 sq ft · £556/sq ft | +88% vs 2012 |
| 12 Oct 2012 | £194,000 | Flats · Leasehold · New build | 657 sq ft · £295/sq ft | first recorded sale |
› 17 SG3 6ER · Detached £910,000· 16 Mar 2023
| 16 Mar 2023 | £910,000 | Detached · Freehold | 1,776 sq ft · £512/sq ft | first recorded sale |
› Apartment 17, Robert Ellis Court SG3 6EL · Flats £285,000· 20 May 2022 · 2 sales
| 20 May 2022 | £285,000 | Flats · Leasehold | 657 sq ft · £434/sq ft | first recorded sale |
| 2 Oct 2012 | £210,000 | Flats · Leasehold · New build | 657 sq ft · £320/sq ft | −26% vs 2022 |
› Apartment 20, Robert Ellis Court SG3 6EL · Flats £375,000· 29 Jun 2021 · 2 sales
| 29 Jun 2021 | £375,000 | Flats · Leasehold | 850 sq ft · £441/sq ft | +21% vs 2009 |
| 10 Aug 2009 | £310,000 | Flats · Leasehold · New build | 850 sq ft · £365/sq ft | first recorded sale |
› 9 SG3 6ER · Detached £775,000· 9 Dec 2020
| 9 Dec 2020 | £775,000 | Detached · Freehold | 1,507 sq ft · £514/sq ft | first recorded sale |
› Apartment 6, Robert Ellis Court SG3 6EL · Flats £345,000· 20 Sept 2019 · 2 sales
| 20 Sept 2019 | £345,000 | Flats · Leasehold | 721 sq ft · £478/sq ft | first recorded sale |
| 18 Sept 2012 | £250,000 | Flats · Leasehold · New build | 721 sq ft · £347/sq ft | −28% vs 2019 |
› Apartment 22, Robert Ellis Court SG3 6EL · Flats £290,000· 15 Dec 2017 · 3 sales
| 15 Dec 2017 | £290,000 | Flats · Leasehold | 807 sq ft · £359/sq ft | first recorded sale |
| 19 Oct 2012 | £250,000 | Flats · Leasehold | 807 sq ft · £310/sq ft | −14% vs 2017 |
| 13 Oct 2011 | £284,000 | Flats · Leasehold · New build | 807 sq ft · £352/sq ft | +14% vs 2012 |
› 2 SG3 6ER · Semi-detached £725,000· 20 Oct 2017 · 2 sales
| 20 Oct 2017 | £725,000 | Semi-detached · Freehold | 1,722 sq ft · £421/sq ft | first recorded sale |
| 25 Oct 1996 | £131,000 | Semi-detached · Freehold | 1,722 sq ft · £76/sq ft | −82% vs 2017 |
› Apartment 23, Robert Ellis Court SG3 6EL · Flats £325,000· 30 Jun 2017 · 2 sales
| 30 Jun 2017 | £325,000 | Flats · Leasehold | 721 sq ft · £451/sq ft | first recorded sale |
| 20 Sept 2011 | £225,000 | Flats · Leasehold · New build | 721 sq ft · £312/sq ft | −31% vs 2017 |
› Apartment 2, Robert Ellis Court SG3 6EL · Flats £325,000· 28 Jun 2017 · 2 sales
| 28 Jun 2017 | £325,000 | Flats · Leasehold | 786 sq ft · £414/sq ft | first recorded sale |
| 20 Oct 2010 | £270,000 | Flats · Leasehold · New build | 786 sq ft · £344/sq ft | −17% vs 2017 |
› Apartment 16, Robert Ellis Court SG3 6EL · Flats £275,000· 27 Jan 2017 · 2 sales
| 27 Jan 2017 | £275,000 | Flats · Leasehold | 764 sq ft · £360/sq ft | first recorded sale |
| 14 Nov 2012 | £217,500 | Flats · Leasehold · New build | 764 sq ft · £285/sq ft | −21% vs 2017 |
› 4 SG3 6ER · Semi-detached £642,500· 24 Sept 2015
| 24 Sept 2015 | £642,500 | Semi-detached · Freehold | 1,518 sq ft · £423/sq ft | first recorded sale |
› Apartment 1, Robert Ellis Court SG3 6EL · Flats £256,000· 14 Sept 2015 · 2 sales
| 14 Sept 2015 | £256,000 | Flats · Leasehold | 678 sq ft · £378/sq ft | first recorded sale |
| 15 Aug 2013 | £185,000 | Flats · Leasehold · New build | 678 sq ft · £273/sq ft | −28% vs 2015 |
› Flat 2, Gordon Court SG3 6DD · Flats £159,995· 13 Mar 2015 · 3 sales
| 13 Mar 2015 | £159,995 | Flats · Leasehold | 431 sq ft · £372/sq ft | +88% vs 2002 |
| 26 Apr 2004 | £120,000 | Flats · Leasehold | 431 sq ft · £279/sq ft | −25% vs 2015 |
| 8 Mar 2002 | £85,000 | Flats · Leasehold | 431 sq ft · £197/sq ft | first recorded sale |
› Apartment 21, Robert Ellis Court SG3 6EL · Flats £265,000· 5 Jan 2015
| 5 Jan 2015 | £265,000 | Flats · Leasehold | 667 sq ft · £397/sq ft | first recorded sale |
› 25 SG3 6ER · Detached £950,000· 7 Oct 2014 · 2 sales
| 7 Oct 2014 | £950,000 | Detached · Freehold | 2,573 sq ft · £369/sq ft | +43% vs 2007 |
| 28 Aug 2007 | £666,000 | Detached · Freehold | 2,573 sq ft · £259/sq ft | first recorded sale |
› Apartment 19, Robert Ellis Court SG3 6EL · Flats £240,000· 9 Jul 2014 · 2 sales
| 9 Jul 2014 | £240,000 | Flats · Leasehold | 721 sq ft · £333/sq ft | +21% vs 2012 |
| 5 Jan 2012 | £198,000 | Flats · Leasehold · New build | 721 sq ft · £275/sq ft | first recorded sale |
› Apartment 8, Robert Ellis Court SG3 6EL · Flats £227,000· 19 Aug 2013
| 19 Aug 2013 | £227,000 | Flats · Leasehold · New build | 1,098 sq ft · £207/sq ft | first recorded sale |
› Apartment 3, Robert Ellis Court SG3 6EL · Flats £200,000· 4 Jan 2013
| 4 Jan 2013 | £200,000 | Flats · Leasehold · New build | 678 sq ft · £295/sq ft | first recorded sale |
› Apartment 5, Robert Ellis Court SG3 6EL · Flats £217,000· 31 Jul 2012
| 31 Jul 2012 | £217,000 | Flats · Leasehold · New build | 753 sq ft · £288/sq ft | first recorded sale |
› Apartment 14, Robert Ellis Court SG3 6EL · Flats £235,000· 22 Mar 2012 · 2 sales
| 22 Mar 2012 | £235,000 | Flats · Leasehold | 893 sq ft · £263/sq ft | +4% vs 2011 |
| 9 Sept 2011 | £225,000 | Flats · Leasehold · New build | 893 sq ft · £252/sq ft | first recorded sale |
› 27 SG3 6ER · Detached £555,000· 17 Feb 2012
| 17 Feb 2012 | £555,000 | Detached · Freehold | 1,496 sq ft · £371/sq ft | first recorded sale |
› Apartment 12, Robert Ellis Court SG3 6EL · Flats £218,000· 6 Jan 2012
| 6 Jan 2012 | £218,000 | Flats · Leasehold · New build | 732 sq ft · £298/sq ft | first recorded sale |
› Apartment 7, Robert Ellis Court SG3 6EL · Flats £235,000· 28 Oct 2011
| 28 Oct 2011 | £235,000 | Flats · Leasehold · New build | 883 sq ft · £266/sq ft | first recorded sale |
› 13 SG3 6ER · Detached £662,000· 8 Oct 2010
| 8 Oct 2010 | £662,000 | Detached · Freehold | 1,862 sq ft · £356/sq ft | first recorded sale |
› Apartment 9, Robert Ellis Court SG3 6EL · Flats £300,000· 15 Apr 2010
| 15 Apr 2010 | £300,000 | Flats · Leasehold · New build | 1,001 sq ft · £300/sq ft | first recorded sale |
› Apartment 11, Robert Ellis Court SG3 6EL · Flats £300,000· 25 Sept 2009
| 25 Sept 2009 | £300,000 | Flats · Leasehold · New build | 936 sq ft · £320/sq ft | first recorded sale |
› 11 SG3 6ER · Detached £605,000· 4 Aug 2009 · 2 sales
| 4 Aug 2009 | £605,000 | Detached · Freehold | 1,884 sq ft · £321/sq ft | first recorded sale |
| 20 Feb 2008 | £600,000 | Semi-detached · Freehold | 1,884 sq ft · £319/sq ft | −1% vs 2009 |
› Flat 10, Gordon Court SG3 6DD · Flats £120,000· 1 Sept 2006 · 3 sales
| 1 Sept 2006 | £120,000 | Flats · Leasehold | 570 sq ft · £210/sq ft | first recorded sale |
| 1 May 2003 | £97,000 | Flats · Leasehold | 570 sq ft · £170/sq ft | −19% vs 2006 |
| 9 Apr 1996 | £55,000 | Flats · Leasehold | 570 sq ft · £96/sq ft | −43% vs 2003 |
› 6 SG3 6ER · Detached £557,000· 27 Jan 2006
| 27 Jan 2006 | £557,000 | Detached · Freehold | 3,122 sq ft · £178/sq ft | first recorded sale |
› 23 SG3 6ER · Detached £575,000· 1 Jun 2005
| 1 Jun 2005 | £575,000 | Detached · Freehold | first recorded sale |
› Flat 7, Gordon Court SG3 6DD · Flats £120,000· 18 May 2001 · 2 sales
| 18 May 2001 | £120,000 | Flats · Leasehold | 388 sq ft · £310/sq ft | +31% vs 1998 |
| 4 Dec 1998 | £91,500 | Flats · Leasehold | 388 sq ft · £236/sq ft | first recorded sale |
› Flat 8, Gordon Court SG3 6DD · Flats £65,000· 3 Mar 2000
| 3 Mar 2000 | £65,000 | Flats · Leasehold | 441 sq ft · £147/sq ft | first recorded sale |
› Flat 1, Gordon Court SG3 6DD · Flats £57,000· 1 Mar 2000 · 4 sales
| 1 Mar 2000 | £57,000 | Flats · Leasehold | 366 sq ft · £156/sq ft | +29% vs 1999 |
| 31 Jul 1999 | £44,250 | Flats · Leasehold | 366 sq ft · £121/sq ft | +3% vs 1997 |
| 29 Dec 1997 | £43,000 | Flats · Leasehold | 366 sq ft · £117/sq ft | −13% vs 1995 |
| 10 Feb 1995 | £49,500 | Flats · Leasehold · New build | 366 sq ft · £135/sq ft | first recorded sale |
› Flat 4, Gordon Court SG3 6DD · Flats £55,375· 29 Feb 2000 · 3 sales
| 29 Feb 2000 | £55,375 | Flats · Leasehold | 441 sq ft · £125/sq ft | +29% vs 1997 |
| 23 Dec 1997 | £43,000 | Flats · Leasehold | 441 sq ft · £97/sq ft | first recorded sale |
| 17 Jan 1995 | £47,500 | Flats · Leasehold · New build | 441 sq ft · £108/sq ft | −14% vs 2000 |
› Flat 3, Gordon Court SG3 6DD · Flats £55,375· 29 Feb 2000 · 3 sales
| 29 Feb 2000 | £55,375 | Flats · Leasehold | 334 sq ft · £166/sq ft | +31% vs 1999 |
| 31 Jul 1999 | £42,250 | Flats · Leasehold | 334 sq ft · £127/sq ft | first recorded sale |
| 17 Jan 1995 | £47,500 | Flats · Leasehold · New build | 334 sq ft · £142/sq ft | −14% vs 2000 |
› Flat 6, Gordon Court SG3 6DD · Flats £55,375· 29 Feb 2000 · 4 sales
| 29 Feb 2000 | £55,375 | Flats · Leasehold | 441 sq ft · £125/sq ft | +12% vs 1995 |
| 31 Jul 1999 | £45,000 | Flats · Leasehold | 441 sq ft · £102/sq ft | first recorded sale |
| 22 Jan 1998 | £43,000 | Flats · Leasehold | 441 sq ft · £97/sq ft | −4% vs 1999 |
| 7 Feb 1995 | £49,500 | Flats · Leasehold · New build | 441 sq ft · £112/sq ft | +15% vs 1998 |
› 14 SG3 6ER · Detached £199,695· 10 Jun 1997
| 10 Jun 1997 | £199,695 | Detached · Freehold | 1,625 sq ft · £123/sq ft | first recorded sale |
› 12 SG3 6ER · Detached £192,500· 31 May 1995
| 31 May 1995 | £192,500 | Detached · Freehold | first recorded sale |
At your size
A 90 m² (970 sq ft) home in SG3 is worth roughly £403k–£502k at the district's typical £416–£518 per square foot (255 sales, two years). That is a range, not a valuation.
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Sources and method. Sales completed to August 2026, as registered by 4 Oct 2026 · headline figures cover the 12 months to June 2026 (later months are still being registered).Next HM Land Registry release ~28 Oct 2026. Medians unless stated; averages only where 30 or more sales. Category A sales only (standard price-paid transactions), houses and flats.
Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. Floor areas derived from Energy Performance Certificate data © Crown copyright, licensed under the Open Government Licence v3.0. Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Source: Office for National Statistics licensed under the Open Government Licence v3.0.
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