| 1, Allen Close, Billingborough, Sleaford | Freehold | 60 m² | £100,000 (2014) |
| 2, Allen Close, Billingborough, Sleaford | Freehold | 62 m² | £117,500 (2018) |
| 4 Allen Close, Billingborough, Sleaford | Freehold | 55 m² | £87,500 (2004) |
| 6 Allen Close, Billingborough, Sleaford | Freehold | 64 m² | £150,000 (2025) |
| 9, Allen Close, Billingborough, Sleaford | Freehold | 58 m² | £82,500 (2005) |
| 10, Allen Close, Billingborough, Sleaford | Freehold | 73 m² | £100,000 (2005) |
| 11, Allen Close, Billingborough, Sleaford | Freehold | 65 m² | £93,000 (2008) |
| 14, Allen Close, Billingborough, Sleaford | Freehold | 57 m² | £95,000 (2018) |
| 15, Allen Close, Billingborough, Sleaford | Freehold | 65 m² | £92,000 (2006) |
| 17 Allen Close, Billingborough, Sleaford | Freehold | 58 m² | £40,000 (2000) |
| 18 Allen Close, Billingborough, Billingborough | Freehold | 54 m² | £116,000 (2019) |
| 20, Allen Close, Billingborough, Sleaford | Freehold | 62 m² | £102,500 (2006) |
| 21 Allen Close, Billingborough, Sleaford | Freehold | 54 m² | £45,000 (2002) |
| 22, Allen Close, Billingborough, Sleaford | Freehold | 63 m² | £162,000 (2025) |
| 23 Allen Close, Billingborough, Billingborough | Freehold | 55 m² | £129,950 (2024) |
| 24, Allen Close, Billingborough, Sleaford | Freehold | 57 m² | £97,500 (2016) |
| 25 Allen Close, Billingborough, Sleaford | Freehold | 56 m² | £130,000 (2023) |
| 26, Allen Close, Billingborough, Sleaford | Freehold | 55 m² | £87,500 (2015) |
| 27 Allen Close, Billingborough, Sleaford | Freehold | 55 m² | £83,500 (2003) |
| 28 Allen Close, Billingborough, Sleaford | Freehold | 94 m² | £162,500 (2021) |
| 29, Allen Close, Billingborough, Sleaford | Freehold | 50 m² | £159,950 (2025) |
| 31, Allen Close, Billingborough, Sleaford | Freehold | 75 m² | £96,000 (2013) |
| 33 Allen Close, Billingborough, Billingborough | Freehold | 76 m² | £145,000 (2020) |
| 37, Allen Close, Billingborough, Sleaford | Freehold | 76 m² | £157,000 (2023) |