A drone survey firm covering Tavistock

Tavistock is about fifty minutes from the Exeter base, out on the A30 and then down through Okehampton, or across from Plymouth on the A386. Neither route is quick, because the moor is in the way whichever way you go, and that is the practical reality behind any coverage claim for west Devon.

So a visit here is a planned day. It pairs sensibly with Okehampton on the way out or Plymouth on the way back, and for anyone with more than one property in the Tamar valley area, a single booked visit covering several is far better value in travel terms than separate trips.

The centre here is a remarkable piece of Victorian town planning, built on mining wealth in green Hurdwick stone, with Georgian survivals alongside it and terraced miners' cottages in the surrounding villages. Roofs are natural and Delabole slate with stone-bedded ridges, and the later housing on the fringes is concrete tile.

Stone-built Victorian towns of this kind carry tall chimney stacks, often shared between properties and often no longer serving a working fire. A stack that has stopped being used stops being maintained, and the flaunching, the pointing and the flashings around it are the first things to go. On steep sites with high wind loading, a leaning or badly pointed stack is not only a damp problem.

That combination, tall stacks plus steep ground plus wind, is why close aerial detail is worth more here than in a flat town with low bungalows. From the ground you cannot judge a stack at all. From ten metres away at 100 megapixels, you can see which joint has actually opened.

The town sits in the Tavy valley with Dartmoor rising east and the Tamar valley falling away west towards Cornwall. The prevailing south-westerly brings rain up the Tamar and the moor holds it, so this is one of the wettest places covered here.

For flight planning that means a date set against the local forecast and a genuine chance it moves. For the buildings it means the same thing it means at Okehampton: slow, persistent decay rather than dramatic single failures, and a real argument for looking at a property on an interval rather than waiting for a symptom.

The mining heritage in the wider area brings its own stock of historic structures and estate buildings, where an aerial record is often wanted for conservation or grant purposes as much as for repair.

The market hall and the abbey remains in the centre are protected fabric in a busy pedestrian setting, which is the most constrained flying environment in the town. Anything there needs the launch position and the timing agreed in advance rather than settled on arrival.

The wider mining landscape carries world heritage designation, and instructions from that area are often about documenting a structure rather than diagnosing a fault, which changes what a report needs to contain but not how it is produced.