| 14, Penn House Main Avenue, Northwood, HA6 2HH | Apr 2023 | £698,250 | Detached | Leasehold |
| 34, Penn House Main Avenue, Northwood, HA6 2HH | Jun 2022 | £750,000 | Flat / maisonette | Leasehold |
| 16, Penn House Main Avenue, Northwood, HA6 2HH | Mar 2021 | £675,000 | Flat / maisonette | Leasehold |
| 32, Penn House Main Avenue, Northwood, HA6 2HH | Feb 2021 | £625,000 | Flat / maisonette | Leasehold |
| 10, Penn House Main Avenue, Northwood, HA6 2HH | Dec 2019 | £640,000 | Flat / maisonette | Leasehold |
| 4, Penn House Main Avenue, Northwood, HA6 2HH | Dec 2013 | £495,000 | Flat / maisonette | Leasehold |
| 26, Penn House Main Avenue, Northwood, HA6 2HH | Oct 2005 | £380,000 | Flat / maisonette | Leasehold |
| 20, Penn House Main Avenue, Northwood, HA6 2HH | Apr 2005 | £375,000 | Flat / maisonette | Leasehold |
| 36, Penn House Main Avenue, Northwood, HA6 2HH | Jan 2004 | £325,000 | Flat / maisonette | Leasehold |
| 2, Penn House Main Avenue, Northwood, HA6 2HH | Nov 2003 | £297,500 | Flat / maisonette | Leasehold |
| 30, Penn House Main Avenue, Northwood, HA6 2HH | Jul 2003 | £280,000 | Flat / maisonette | Leasehold |
| 24, Penn House Main Avenue, Northwood, HA6 2HH | Apr 2003 | £305,000 | Flat / maisonette | Leasehold |
| 28, Penn House Main Avenue, Northwood, HA6 2HH | Mar 2003 | £310,000 | Flat / maisonette | Leasehold |
| 6, Penn House Main Avenue, Northwood, HA6 2HH | Jun 2001 | £365,000 | Flat / maisonette | Leasehold |
| 8, Penn House Main Avenue, Northwood, HA6 2HH | Feb 1997 | £156,000 | Semi-detached | Leasehold |
| 22, Penn House Main Avenue, Northwood, HA6 2HH | Oct 1995 | £145,000 | Flat / maisonette | Leasehold |