DJI - Mavic 3 Thermal (M3T)

A Mavic 3 Enterprise is your best option. That budget should get you the drone plus a bunch of batteries. Depending on what accuracy you need, you could add on an RTK module as well.

You need more budget if you want to do both. Mavic 3T for thermal is good and in that budget but very little payload capacity. M30T for both but likely double that budget all up.

I've basically stopped using my Mavic and use my Mini 3 Pro for most things now. Wind resistance isn't quite as good, but image quality is more than good enough and being under 250 g makes flying a lot easier (in Canada, might be different where you are). Some people assume 'bigger is better'. I've seen that in photography, where my Nikon D800 with huge lens gets more respect than a smaller camera. (So sometimes I'll being the bigger camera for show, use it for a few pictures while mostly using a smaller camera, and let people assume that the best pictures were taken with the bigger camera when in reality all the pictures came from the smaller easier-to-carry camera.)

Fly it a lot, remember the limitations of the obstacle avoidance, learn the flight characteristics, and above all, have fun.  I had the Air2S, then went to the Mavic 3 and Mavic 3E and now the Mavic 3T. Skipped the Mavic 2pro to get newer, as I use these for my small business side job. 

I just took part in flying drones to map infrastructure and home damage in a bunch of super remote villages in South West Alaska. The whole area was smacked by the remnants of Typhoon Halong, huge storm surge up the Yukon Kuskokwim Delta and 100mph winds. We were using Mavic 3T’s. Our primary job is flying on wildfires, and these are great for that mission. They worked well for this as well. I’ll say the biggest bottleneck in our workflow was sending the imagery to the cloud for processing. We’re going to be looking at how RTK might increase processing speed in the future, and possibly do it local, rather than have to upload everything. Starlink is great, but it can only do so much. Near the end of our mission we started switching over to some service, don’t have my field notes on me and I can’t remember the name, that was taking full motion video and creating orthos from video shot at a 45° angle from about 50-100’. That was only my last couple days on the incident, so I’m not sure what the actual resulting product turned out like. Anker makes some really nice 25000mah batteries. They were handing those things out like candy. I was using them to run a Starlink mini and to keep my remote and phone charged. Super handy.

For commercial flight there is nothing comparable to the Mavic 3 Enterprise and Matrice 4 models. Once you get up to the larger Matrices then there are a couple of options that are closer but DJI has such a head start and lead on this type of flight that it will be a while until anyone can catch up. In my experience Autel makes a good drone and system but their support can be a pain if you experience issues which is more often than DJI. Skydio is in the same boat and neither have the famed mechanical shutter. For larger commercial use cases the Freefly, WISPR and Intelligent Flight offerings are getting much closer.

If you want something good and not care about price get the mavic but if you do care about price then get the dji mini 3 or 4 pro remember to ALWAYS do the training flight simulater when you buy a new drone you will need to

The Mavic 3 T is not a surveying drone. You can use it but it will need control points used as GCPs. The RTK module is positioning only and it does not use Time Sync like its sister model the E. For thermal, a thermography certification will lead you to the correct way to operate.

Mavics are so good!

You will be far better equipped getting a Mavic 3 thermal and a separate handheld device. Detachable payloads sit with things like the 300/350/400 series and you're looking at about 20 grand

Honestly, to the eyes of the public, the Mavic isn't much more impressive than the mini. If you want to look serious, you need an Inspire or an M300. But that's 500% overkill for OP's use cases.