My experience of Persimmon has been very mixed. The staff on site, Suzanne, Angus and Sean, were excellent. However, there have been some major issues, which I would preclude me from recommending that you buy a Persimmon house. Firstly, they forced us to complete the sale, when they access road and driveway at the front of the house, were not finished. Our downstairs WC, also wasn't ready and the whole house was dirty. The downstairs WC is still not done to an acceptable standard, with the sink not straight and the tiling grit being several different shades of grey. The tiler had behaved innaproprately in our house, using the bathroom and in the process stinking out our whole house, as well as going to the toilet and leaving the door open. I have no problem with people using the toilet, within reason. The tiler also made an unbelievable mess of our walls. My wife at the time was pregnant, and very sensitive to smell, so I asked if an alternate tiler could be sourced. This was provided, but unfortunately they didn't complete the job and customer care at Persimmon said they couldn't get in touch with him or provide someone else. It was the original tiler, or nothing.
I therefore made an offer to Permission of completing some plumbing that my wife and I had planned, and I would pay to get the downstairs WC, done myself. This was accepted and then after I had gone through the process of getting quotes, and employing people to do the tiling and the plumbing for the sink. Persimmon changed their mind, with no explanation and it felt a bit like gaslighting, as they acted like we had never had an agreement. I subsequently complained and the response I received from Louise Scott, is genuinely one of the most tactless bits of correspondence that I have ever received and amounted pretty much to two fingers up.
Most of the staff at Persimmon have been lovely (especially the site staff) and had it not been for customer care, going back on their word and the letter from Louise, I'd have been willing to overlook the various issues. Unfortunately, I would advise against a Persimmon home, but if you do decide to go with them, make sure to get everything in writing.