Answer first: Two kinds of dock changes on this lake. Like-for-like work inside your existing footprint (ladders, bumpers, decking, reinforcement, most PWC ports) can usually just be built. Anything that changes the footprint or structure (added slips, extensions, major reconfigurations) needs an Ameren permit amendment before a single weld. We tell you which kind yours is on the first call, and we do not start footprint work without the paper.
What we build and fix
- Slip changes and reconfigurations. Boat got bigger, needs got different. Permit-side handled first, steel second.
- PWC ports and lift mounts. Mounted into structure that can carry them, not clamped onto tired framing.
- Ladders, bumpers, cleats, gates. The small stuff that makes a dock livable, welded instead of wished on.
- Structural reinforcement. Corner gussets, hinge rebuilds, walkway framing. Often found during a storm repair and worth doing while the welder is floating there.
- Re-decking. Boards and fasteners, on a frame that has been checked square first.
Why the Ameren line matters
Every dock on this lake sits on Ameren's water under an Ameren permit. Build outside the permit and the problem does not go away when the contractor's boat leaves; it waits for you at the next inspection or sale. The fix is boring: know the rules, flag what needs an amendment, build what the permit says. Boring is what you want in a dock.
Full breakdown of what needs a permit and what does not, plus how to reach Ameren directly: our Ameren dock permit guide.
Modification pricing is scope work, quoted in writing after we see the dock. Ranges for common jobs are in the cost guide.