Surveyors · Threemilestone, Cornwall
Surveys for Threemilestone buyers, with Threemilestone's own numbers: house prices, building age, flood zones and radon.
Our suggestion for Threemilestone
Choose by age in Threemilestone: a Level 2 for post-war homes, a Level 3 for period ones. If the house is Victorian or older, listed, or has been heavily extended, go Level 3. Otherwise a Level 2 normally does the job.
In 2025, 41 homes sold in Threemilestone at a median price of £285,000, down 4% on 2024's £295,500.
| Type | Median |
|---|---|
| detached | £400,000 |
| semi-detached | £292,500 |
| terraced | £245,000 |
Sales mix: semi-detached 54%, detached 22%, terraced 22%, flat/maisonette 2%. TR3, TR4. HM Land Registry, 2025, ONS built-up area. Residents: Threemilestone built-up area, ONS Census 2021.
25% of the housing stock in these neighbourhoods dates from before 1919 and 24% from before 1900. Expect solid walls rather than cavities, so damp diagnosis needs care: cement renders, plastic paints and raised ground levels trap moisture in walls that were designed to breathe.
Source: VOA, Mar 2025
Historic England lists 2 buildings in and around Threemilestone. Listed status affects windows, renders and repairs, so check what consent exists for work already done.
Source: Historic England
Only 0 of the 32 postcodes we checked have their centre in Flood Zone 2 or 3. That's rivers and sea only; surface water is mapped separately, so still check the address.
Source: Environment Agency
The 1 km radon map square at the centre of Threemilestone is class 6: an estimated 30% or more of homes are above the radon Action Level. 100% of the sold postcodes we checked fall in a radon Affected Area. Ask the seller for any radon test result, or test after you move in; remedies are usually straightforward.
Source: UKHSA/BGS
Threemilestone lies inside the Cornwall and West Devon Mining Landscape World Heritage Site. Two Cornish checks to expect: a mining search from your conveyancer, and, for concrete-block houses from before about 1950, a mundic screening test.
Source: UNESCO WHS; RICS
Under most of Threemilestone the bedrock is mudstone, siltstone and sandstone (100%). This is the 'killas' country of slate and shale; older homes are often rubble stone, sometimes slate-hung, and weathering of soft stone and mortar is common.
Source: BGS 625k
The BGS GeoSure 5 km hexagon covering Threemilestone shows moderate slope instability (landslides) potential. That's a broad screen, not a site assessment; look for cracking, sticking doors and leaning walls.
Source: BGS GeoSure
Threemilestone LSOAs with 2025 sales. VOA, Mar 2025.
Thinking of selling in Threemilestone? 2025 medians by type: detached £400,000, semi-detached £292,500, terraced £245,000. A free, in-person appraisal tells you where yours sits.
Need an EPC in Threemilestone? EPCs in Threemilestone. Request a quote for your sale or let.
All Truro and Falmouth constituency places · All Cornwall places
Based on HM Land Registry Price Paid Data, 41 homes sold in Threemilestone in 2025 with a median price of £285,000 (down 4% on 2024's £295,500). The most common type sold was semi-detached (54% of sales).
We carry out RICS Level 2 and Level 3 surveys. Which you need depends on the age and type of the house. Pre-1919 share of local housing: 25% (VOA). 2 listed buildings in and around Threemilestone. If in doubt, the chooser on our survey page takes a minute.
Largely, yes. The central square is class 6, meaning 30% or more of homes are estimated above the Action Level, and 100% of checked postcodes are affected.
It depends on the street: 0 of 32 sampled postcodes fall in Flood Zone 2 or 3 (0 in Zone 3). Check the exact address for surface water too.
Almost always. Being inside the mining World Heritage Site, Threemilestone has obvious history; your solicitor will order a mining search as part of the usual Cornish searches.
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