According to data from HM Land Registry, 21, Thornhill Close, Amersham sits on a plot of 265 m².

We have plot size data on 13 out of 15 other houses in the postcode and 21, Thornhill Close, Amersham sits on the largest plot.

21, Thornhill Close, Amersham has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 01 Sep 2016.

The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

According to HM Land Registry, 21, Thornhill Close, Amersham was last sold on 8th September 2017 for £875,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since September 2017, the market for similar properties has risen by 14.2%.

• Sold Sep 2017£875,000

According to the Land Registry and our network of Estate Agents, there have been 145 sales of properties similar to 21, Thornhill Close, Amersham within a radius of 1.3 kilometres since 2016.

The most recent example is 27, Whielden Street, Amersham, HP7 0HU, a freehold house which sold for £930,000 on the 18th February 2026.

Read more about house prices in HP7.

• Sold Feb 2026£930,000 | 3 Bed House27, Whielden Street, Amersham, HP7 0HU27, Whielden Street, Amersham, HP7 0HU
• Sold Dec 2025£910,000 | 3 Bed House92, High Street, Amersham, HP7 0DS92, High Street, Amersham, HP7 0DS
• Sold Oct 2025£860,000 | 4 Bed House30, Whielden Street, Amersham, HP7 0HU30, Whielden Street, Amersham, HP7 0HU
• Sold Sep 2025£925,000 | 4 Bed House135, High Street, Amersham, HP7 0DY135, High Street, Amersham, HP7 0DY
• Sold May 2025£875,000 | 3 Bed House6, Diamond Court, Amersham, HP7 0BY6, Diamond Court, Amersham, HP7 0BY
• Sold Jan 2025£995,000 | 3 Bed House107, High Street, Amersham, HP7 0DY107, High Street, Amersham, HP7 0DY
• Sold Dec 2024£795,000 | 4 Bed House4, Diamond Court, Amersham, HP7 0BY4, Diamond Court, Amersham, HP7 0BY
• Sold Dec 2024£755,000 | 3 Bed House40, Whielden Street, Amersham, HP7 0HU40, Whielden Street, Amersham, HP7 0HU
• Sold Oct 2024£786,000 | 3 Bed House28, Whielden Street, Amersham, HP7 0HT28, Whielden Street, Amersham, HP7 0HT
• Sold Aug 2024£750,000 | 4 Bed House78, Station Road, Amersham, HP7 0BD78, Station Road, Amersham, HP7 0BD
• Sold Nov 2023£660,000 | 4 Bed House10, The Broadway, Amersham, HP7 0HP10, The Broadway, Amersham, HP7 0HP
• Sold Jul 2022£795,000 | 4 Bed House5, Diamond Court, Amersham, HP7 0BY5, Diamond Court, Amersham, HP7 0BY
• Sold Mar 2022£600,000 | 4 Bed House15, Whielden Street, Amersham, HP7 0HU15, Whielden Street, Amersham, HP7 0HU
• Sold Feb 2020£665,525 | 4 Bed House18, Whielden Street, Amersham, HP7 0HT18, Whielden Street, Amersham, HP7 0HT
• Sold Oct 2018£775,000 | 3 Bed House113, High Street, Amersham, HP7 0DY113, High Street, Amersham, HP7 0DY
• Sold Oct 2016£699,950 | 4 Bed House3, Diamond Court, Amersham, HP7 0BY3, Diamond Court, Amersham, HP7 0BY
• Sold Sep 2016£745,000 | 3 Bed House1, Diamond Court, Amersham, HP7 0BY1, Diamond Court, Amersham, HP7 0BY
• Sold Aug 2016£795,000 | 4 Bed House8, Diamond Court, Amersham, HP7 0BY8, Diamond Court, Amersham, HP7 0BY
• Sold Aug 2016£710,000 | 4 Bed House2, Diamond Court, Amersham, HP7 0BY2, Diamond Court, Amersham, HP7 0BY
• Sold Aug 2016£785,000 | 4 Bed House7, Diamond Court, Amersham, HP7 0BY7, Diamond Court, Amersham, HP7 0BY

Thornhill Close, Amersham, HP7 has a total of 21 addresses. According to our analysis of all the public data, 21, Thornhill Close, Amersham is the largest and the most expensive property on the street.

When compared to the postcode district it is £90k more expensive than the average property in HP7.

• St Mary's CofE Primary School, Amersham

  400 m away
• St George's Church of England Infant School

  2.0 km away
• Woodside Junior School

  2.1 km away

• Dr Challoner's Grammar School

  1.3 km away
• Amersham School

  1.7 km away
• Dr Challoner's High School

  3.4 km away

• Amersham

  |

  1.2 km away
• Chalfont & Latimer

  |

  4.0 km away
• Chesham

  |

  4.4 km away

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.