Lean alone is a poor predictor of failure, and an old lean is often evidence of the opposite. A tree that leaned slowly over years has been laying reaction wood on the loaded side the whole time and thickening its root plate to match — it has already engineered around the load. What actually predicts uprooting is root-plate movement, and root-plate movement shows up in the ground, not in the trunk angle. That is why the soil around the base tells you more than the lean does. In Fishers — Sunblest Farms, Avalon and Brooks Chase included, that's normally a hazardous tree removal job at $800–$5,000. Not urgent.
Why this comes up in Fishers
Duke Energy Indiana, on a five-year distribution trim cycle covering roughly 20% of line miles annually, with a minimum 14 days' notice before planned pruning and an annual vegetation report to the IURC each March 31. On top of that, Fishers issues its own annual right-of-way trimming permit to each utility under section 95.33(D), and except in emergencies, electric and communications utilities must notify the city before removing any tree.
Fishers's canopy
Fishers was not one of the 23 communities in Indiana DNR's street-tree sample inventory, so no verified species breakdown exists for the city. What is documented is that the Tree Board maintains a list of desirable and undesirable species and no species off that list may be planted as a street tree without special permission — the practical picture being a 1990s-2000s nursery palette in tight uniform age classes, with ash gone since EAB was confirmed in Indiana in 2004.
Hamilton County rules
Fishers regulates street trees, not yard trees. Under section 95.33 you need a Tree Board permit to plant, treat, spray or prune a street tree, and a separate permit to remove one, with no permit required in a genuine emergency; permits are reported to run up to 60 days with a 30-day extension on written request. Section 95.34 bars planting in any public right-of-way, required landscape easement or municipal property without a permit, and bars planting within 15 horizontal feet of an overhead utility line or five feet of an underground one. The trap is the definition: STREET TREES covers trees on real estate owned or controlled by the city AND trees within a dedicated landscape easement, which sweeps in subdivision frontage that looks like private yard. Removing a tree standing entirely in a private yard needs no permit. Section numbers, permit durations and setbacks here should be confirmed against the current Fishers code before they are relied on.
The tree lawn in Fishers
This is where Fishers diverges sharply from Indianapolis. Section 95.02 puts maintenance and removal of the tree between the street and the sidewalk or right-of-way easement line on the owner of the adjacent property, and if that owner fails to remove a dead tree or dangerous limbs after notice, the city removes them and bills the owner. But the code points both directions on cost — 95.34(D) commits the city to street tree care within the Tree Board's budget while 95.34(F) assigns owners routine care between road surface and sidewalk. Call the Department of Permitting and Inspection before assuming who pays for a removal.