So I'm now coming to the end of year two of my lawn restoration. It wasn't at disaster level yet but a few problems, bug damage, dead spots, weeds like nutsedge that weren't controlled by the lawn company, shitty cheap contractor grass strains, bad irrigation, compacted soil, etc. When I bought it they had a shitty old sprinkler controller which meant the irrigated area was watered daily. Consequently the roots were very shallow.
Last year I had the lawn chemical people do plug aeration and overseed in the fall. One back area I had regraded and hydroseeded. The overseeding did nothing noteworthy, the hydroseeding had tons of weeds but thinned out a lot the first winter. Thankfully they did get lime every year so pH wasn't terrible.
This year I treated got cinch bugs earlier (late April) and had basically zero bug damage finally. I tried Scott's seed in the spring in to patch a few areas (it was in sale), and it was very spotty. I've also slowly been acquiring equipment to eventually wind down the chemical service that doesn't do a great job for the price.
I decided one last hurrah before I consider more drastic measures. I detached the whole yard, spread some 50/50 in a few areas where the soil was a bit lacking nutrients and then I over/reseeded the lawn with Jonathan Green Black Beauty Ultra seed. I covered any bare area with straw topcoat.
The new seed is coming in very well, so I think they lawn is going to actually bounce back. My plan is to dethatch, aerate and overseed with BBU every year for a few more years and let the shitty 30 year old shallow root strains get outcompeted. I know my side yard was almost 100% fine fescue, so I'm hoping the KBG will repair minor bare spots on it's own.
Assuming everything comes in strong next spring, I'll add a soil conditioner treatment and do it all again, will be trying moss killer in a few shady areas as well.
Really sucks to have to do all this but I'm hoping if I can get it recovered nicely I can cut back on treatment cycle once the lawn is healthy and just do a basic 4+bug treatment cycle and drop the lawn service to irrigation open and close. Bleh.