Some houses send their downspouts into pipe under the yard. If yours do, ask the company whether it will test the buried line, for example by running a hose into it and watching where the water comes out, and whether it works on underground pipe or only the parts above ground. A blocked line can back water up into a downspout that’s otherwise sound.
If you want a downspout tied into a drain that’s already there, ask before you assume it can be done. Ask where that drain ends, whether it’s clear, and whether any city rule covers it. Marietta’s building permit FAQ doesn’t mention downspouts, so when in doubt, check with Permits & Inspections at 770-794-5659.
On a historic house, downspouts are part of the look. The design guidelines for Marietta’s local residential districts ask that historic gutters and downspouts be kept in good condition, and the downtown guidelines say historic downspouts should be retained. Ask whether a damaged one can be repaired before it’s swapped for a new style.
Ask for a written quote that names each fix, the size of any new downspouts and the length of any extension, along with proof of liability insurance. Listings here come from each company’s own website, and SirGutters doesn’t vet licenses or insurance.