Example - both our new homes, the BIG builders had EXCELLENT warranty staff. What that means is, when there is an issue with ANY part of the home, you log into your account online, and mouse click through an issue, including the best time to call you on any particular day. (you can also call their 800 number)
Our current almost 3 year old home now was LENNAR AND I DID EVERYTHING ON LINE, if I scheduled a call at 9am tomorrow, I SWEAR for one years worth of warranty work the actual builder warranty dept deals with ANY issues, that phone rings EXACTLY to the second at that time. It was amazing.
One of two things will happen, we would get a link for a two way video on the issue and or if more complicated send the actual builders company warranty rep to the house. We knew them all, great people and never more than a day or two or three to get to your house. Always arrive when they say.
So this is how it works. The house is literally built by subcontractors for the BIG national builders. (Our last home DR Horton, same experience and that was during the housing crash) For those subs to do work for these big builders they must offer the builder themselves like DR horton, Lennar etc one year to cover any work that they do to the customers satisfaction. It's an amazing formula that works. The entire warranty dept and staff is lets say LENNAR employees. Their only job is to make you happy and have the contractor that did the job back at your house to correct any issue you report. It's that simple, plumbers, electricians, drywall, paint, cabinets, siding, framing, roof, concrete. Anything, you do not deal with their subs, the builder does. Also if there is anything unusual that is not the contractors fault, built into that house price is an expected expense that the builder will send a contractor out to make you happy. Also the builders rep would show up almost any time the contractor came back for that warranty work, if it was less critical we would get a call from the builder art the end of the day. We also had to Docusign every warranty work was completed to our satisfaction.
Sadly and not so sadly our house was built coming right out of COVID, supplies were short and workers more short, some lacking proper training/skills by these sub contractors. It was an INDUSTRY WIDE problem as you can imaging. Having dealt with new home large builder in the past. I kept my cool as frustrating as some people would freak out and one by one, pages of warranty work and requests for work were done by the builder. NOT once were we refused. Heck within the first month, I had them tear out all the concrete work, driveway and front walk, done, no problem. After 3 attempts to correct an issue with the laminate flooring in one area of the home, they asked us to move out, supplied us with movers, onsite storage, a paid for condo for 3 days while they tore out and replaced the entire laminate flooring with the top of the line flooring that we chose. Let me tell you, some of this was stressful but never once denied. Minor things, I wanted an aquarium in the main family room, however the Thermostat would have been slightly right near one side of it. Needed it moved, no problem.
At times the short supplies worked for us, such as a better than builder upgrade to the HVAC system etc.
Ok, kind of off subject but maybe not, my only question would be is the OPs contractor contracting out the work or using 1099 employees or are they actual employees? Because everything I see here in the south is either 1099 contractors or sub contracting companies. It's a business model. However not to say there are no private companies doing awesome work, there will always be those. Trick is sometimes you dont know, who is what and maybe to ask questions if you think about it.
We got custom I guess) wood blinds for this house from blinds.com ... price was great, blinds.com people were great however unknown to us, they sent a Home Depot employee to our house to confirm my measurements. It was also the Home Depo employee who installed them. WE DID NOT LIKE THE INSTALLER and I am not super thrilled in the rush job both measuring and installing. Not that anyone would know but NEVER again. SO another example. Great blinds.com product, crappy experience dealing with their subcontractor at Home Depot.