Wooden aeroplanes are relatively easy to maintain. There are many organisations in the UK that can repair them, and I suspect throughout Europe. So far, touch wood, I've not had to repair any wooden part of the structure.
I could be wrong but most Mascarets in the UK are operated under LAA rules as homebuilts. My 1051, although built as a production aircraft, is an orphan with no one owning the type certificate and is now an LAA aircraft.
Different countries have different rules. Personally I prefer LAA aircraft because the maintenance regime is simpler and costs are lower.