Surveyors · St Mawes, Cornwall
Buying in St Mawes? Here's what the public data says about its homes, and which RICS survey suits them.
Our suggestion for St Mawes
About a fifth or more of St Mawes's homes are pre-1919, so the right survey depends on the house. For a pre-1919, listed, extended or altered home, choose a Level 3. For a conventional home in reasonable condition, a Level 2 is usually enough.
£1,175,000 was the middle price of the 14 St Mawes homes sold in 2025.
| Type | Median |
|---|---|
| detached | £2,463,431 |
| terraced | £685,000 |
Sales mix: detached 43%, terraced 36%, semi-detached 14%, flat/maisonette 7%. TR2. HM Land Registry, 2025, ONS built-up area. Residents: St Mawes built-up area, ONS Census 2021.
35% of the housing stock in these neighbourhoods dates from before 1919 and 33% 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 36 buildings in and around St Mawes, including Braganza House (Grade II*). On a listed home, like-for-like repairs with traditional materials are the rule; your surveyor should flag anything that looks unconsented.
List entries: Braganza House
Source: Historic England
Conservation area here: St Mawes. Inside a conservation area, things like replacement windows and roof changes can need permission, which matters if you're planning work.
Source: planning.data.gov.uk
1 of the 13 postcodes we checked (postcodes where homes sold in 2025) have their centre in Environment Agency Flood Zone 2 or 3, and 1 in Zone 3. Check the specific address on the government's flood risk service and get insurance quotes before exchange.
Source: Environment Agency
The 1 km radon map square at the centre of St Mawes 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. A three-month radon test is cheap, and fixes (often a sump or better underfloor ventilation) are well understood.
Source: UKHSA/BGS
A mining search is standard practice in Cornwall, and pre-1950 concrete construction can trigger a mundic test (RICS guidance).
Source: UNESCO WHS; RICS
Under most of St Mawes the bedrock is mudstone, siltstone and sandstone (100%). Locally the slates and shales are called killas; rubble-stone and slate-hung walls are typical, and soft stone and old mortar weather over time.
Source: BGS 625k
At roughly 0.0 km from the open sea, exposure matters: check render, chimneys, window seals and metalwork for salt and weather damage.
Source: Natural Earth
St Mawes LSOAs with 2025 sales. VOA, Mar 2025.
Thinking of selling in St Mawes? 2025 medians by type: detached £2,463,431, terraced £685,000. Your house isn't an average, so we come and look: the appraisal is free.
Need an EPC in St Mawes? EPCs in St Mawes. Request a quote for your sale or let.
Also covering: Portscatho. We survey these places too; they don't have a page of their own.
All Truro and Falmouth constituency places · All Cornwall places
Based on HM Land Registry Price Paid Data, 14 homes sold in St Mawes in 2025 with a median price of £1,175,000. The most common type sold was detached (43% of sales).
We carry out RICS Level 2 and Level 3 surveys. Which you need depends on the age and type of the house. 35% of homes in the 1 neighbourhoods where St Mawes homes sold were built before 1919. 36 listed buildings in and around St Mawes, 1 of them Grade I or II*. The house itself decides it, so use the chooser or ask us.
Yes, mostly: 100% of the 13 sold postcodes we checked are in an Affected Area, and the central 1 km square is class 6 (30% or more of homes above the Action Level).
It depends on the street: 1 of 13 sampled postcodes fall in Flood Zone 2 or 3 (1 in Zone 3). Check the exact address for surface water too.
Yes in practice: lenders expect one across Cornwall. The conveyancer arranges it.
Use the online quote on Survey Booker: enter the St Mawes address and pick Level 2 or Level 3.