Our Data Sources
18 Sumner House, High Wycombe has a single entry in the Land Registry from May 2017 and a single entry in the EPC database dated January 2017.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 4 out of 5 and is considered of high accuracy.
Price Range & Condition
In very good condition, we estimate 18 Sumner House, High Wycombe would be worth £174,542, with a potential rental value of £905 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £154,594, with a rental value of £801 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Energy Efficiency
18 Sumner House, High Wycombe has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 13 Jan 2017.
The property is not connected to mains gas and has fully double glazed windows. It is heated using Room heaters, electric.
Sold Prices
18 Sumner House, High Wycombe last changed hands on 19th May 2017, selling for £187,000. The transaction was logged as a leasehold flat by HM Land Registry.
That is its only recorded sale since 1995.
The market for similar properties has dropped by 5.5% since May 2017.
- Sold May 2017£187,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 71 sales of comparable properties within 470 metres of 18 Sumner House, High Wycombe across the last 2 years.
Most recently, 9 Sumner House, Mendy Street, High Wycombe, HP11 2FF, a leasehold flat, sold at £120,000 on the 11th July 2025.
Read more about house prices in HP11.
- Sold Jul 2025£120,000 | 1 Bed Flat9 Sumner House, Mendy Street, High Wycombe, HP11 2FF9 Sumner House, Mendy Street, High Wycombe, HP11 2FF
- Sold May 2023£160,000 | 1 Bed Flat19 Castle House, Desborough Road, High Wycombe, HP11 2FP19 Castle House, Desborough Road, High Wycombe, HP11 2FP
- Sold Jan 2022£180,500 | 1 Bed Flat23 Sumner House, Mendy Street, High Wycombe, HP11 2FF23 Sumner House, Mendy Street, High Wycombe, HP11 2FF
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Our analysis of the public data ranks 18 Sumner House, High Wycombe as the 44th largest and the 47th most expensive of the 47 addresses on Mendy Street, High Wycombe, HP11.
Against the HP11 postcode district average, it is £222k less expensive than the typical property.
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Schools Nearby
- High Wycombe Church of England Combined School400 m away
- Hamilton Academy500 m away
- Oakridge School900 m away
- Wycombe High School1.4 km away
- John Hampden Grammar School1.6 km away
- The Royal Grammar School, High Wycombe1.7 km away
More reading links
Public Transport Nearby
- High Wycombe|800 m away
- Marlow|6.7 km away
- Bourne End|6.8 km away
Available Internet Speeds
Ofcom's latest figures show superfast broadband available in this area.
According to recent data from Ofcom, Superfast Broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
