23, Monnow Keep, Monmouth has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 30 Jul 2021.

The property is not connected to mains gas and has fully double glazed windows. It is heated using room heaters (electric).

23, Monnow Keep, Monmouth last changed hands on 1st September 2006, selling for £125,000. The transaction was logged as a leasehold flat by HM Land Registry.

That is its only recorded sale since 1995.

• Sold Sep 2006£125,000

Land Registry records and our Estate Agent network show 53 sales of comparable properties within 830 metres of 23, Monnow Keep, Monmouth since 2007.

Most recently, 17, Chippenham Court, Monmouth, NP25 3UZ, a leasehold flat, sold at £195,000 on the 13th November 2025.

Read more about house prices in NP25.

• Sold Nov 2025£195,000 | 2 Bed Flat17, Chippenham Court, Monmouth, NP25 3UZ17, Chippenham Court, Monmouth, NP25 3UZ
• Sold Jun 2025£240,000 | 2 Bed Flat23, Chippenham Court, Monmouth, NP25 3UZ23, Chippenham Court, Monmouth, NP25 3UZ
• Sold Jun 2025£112,000 | 2 Bed FlatFlat 4, Hyam Court, Glendower Street, Monmouth, NP25 3DGFlat 4, Hyam Court, Glendower Street, Monmouth, NP25 3DG
• Sold Feb 2025£1,160,000 | 2 Bed Flat11, Howells Place, Monmouth, NP25 3ED11, Howells Place, Monmouth, NP25 3ED
• Sold Jan 2025£189,500 | 2 Bed Flat15, Chippenham Court, Monmouth, NP25 3UZ15, Chippenham Court, Monmouth, NP25 3UZ
• Sold May 2024£95,000 | 2 Bed Flat29, Chippenham Court, Monmouth, NP25 3UZ29, Chippenham Court, Monmouth, NP25 3UZ
• Sold Nov 2023£157,000 | 2 Bed Flat5, Chippenham Court, Monmouth, NP25 3UZ5, Chippenham Court, Monmouth, NP25 3UZ
• Sold Aug 2023£190,000 | 2 Bed Flat27, Chippenham Court, Monmouth, NP25 3UZ27, Chippenham Court, Monmouth, NP25 3UZ
• Sold Jul 2023£85,000 | 2 Bed Flat30, Chippenham Court, Monmouth, NP25 3UZ30, Chippenham Court, Monmouth, NP25 3UZ
• Sold Mar 2023£195,000 | 2 Bed Flat10, Chippenham Court, Monmouth, NP25 3UZ10, Chippenham Court, Monmouth, NP25 3UZ
• Sold Dec 2022£175,000 | 2 Bed Flat19, Chippenham Court, Monmouth, NP25 3UZ19, Chippenham Court, Monmouth, NP25 3UZ
• Sold Nov 2022£143,000 | 2 Bed Flat22, Monnow Keep, Monmouth, NP25 3EX22, Monnow Keep, Monmouth, NP25 3EX
• Sold Apr 2022£88,000 | 2 Bed Flat22, Chippenham Court, Monmouth, NP25 3UZ22, Chippenham Court, Monmouth, NP25 3UZ
• Sold Feb 2022£138,000 | 2 Bed Flat19, Monnow Keep, Monmouth, NP25 3EX19, Monnow Keep, Monmouth, NP25 3EX
• Sold Mar 2021£70,000 | 2 Bed Flat11, Chippenham Court, Monmouth, NP25 3UZ11, Chippenham Court, Monmouth, NP25 3UZ
• Sold Oct 2020£78,000 | 2 Bed Flat14, Chippenham Court, Monmouth, NP25 3UZ14, Chippenham Court, Monmouth, NP25 3UZ
• Sold Dec 2018£78,500 | 2 Bed Flat16, Chippenham Court, Monmouth, NP25 3UZ16, Chippenham Court, Monmouth, NP25 3UZ
• Sold May 2015£35,000 | 2 Bed Flat25, Chippenham Court, Monmouth, NP25 3UZ25, Chippenham Court, Monmouth, NP25 3UZ
• Sold Jul 2010£195,000 | 2 Bed Flat25, Monnow Keep, Monmouth, NP25 3EX25, Monnow Keep, Monmouth, NP25 3EX
• Sold Oct 2007£147,250 | 2 Bed Flat4, Monnow Keep, Monmouth, NP25 3EX4, Monnow Keep, Monmouth, NP25 3EX

Our analysis of the public data ranks 23, Monnow Keep, Monmouth as the 29th largest and the 28th most expensive of the 47 addresses on Monnow Keep, Monmouth, NP25.

Against the NP25 postcode district average, it is £173k less expensive than the typical property.

• Lydney

  |

  16.8 km away
• Chepstow

  |

  19.3 km away
• Abergavenny

  |

  20.0 km away

Environment Agency data suggests this area has a Very Low risk of flooding.