I know there may be a bit of MTFU and diy, especially as I have a chainsaw but I reckon its best to get a pro and their insurance in on this job.
In our garden are four evergreens in a short line, each 1m diameter at the base.
3 obstacles in a U shape, the trees sit in the centre of the open side of the U.
House 1, 10m away. Open end of the U, Right side
Mains overhead power line, 15m away. Open end of the U, left side.
Another house, 20m away against the closed end of the U
The 4 trees are mature and about 30m high...
Getting it wrong and they take out our house gable end to the right, the power line to the left or, for comedy value they go the completely wrong way and cleave my neighbours house in two.
What would be a guestimate or typical price to drop them by a tree surgeon ?