The plaster is seemingly in its mid years of life. Typically pebble surface lasts up to 30 years without much change in the quality of the surface unless other factors come into play like salt conditions. Overall we see some heavier wear in the deep end, either piles of salt, or recessed wear / pits in the deep end (which I feel may be likely wear markings, but with salt bags on the pool deck and a pool pole no where to be found to brush away piles, no way to be certain

The water line tiles only have one skimmer issue and two tile split issues and many coping stone issues and little to no decking issues seen.

The waterline tile on the north section of the pool has coping to tile runner cracks, these two areas should be investigated more, difficult to even see these or any water line issues due to a very overfilled pool. Still the two splits will require attn = $500-1/2K+ possibly each.

The coping stone around the pool pretty much 50% are loose / hollow, and 2 stones in particular VERY loose and ready to break / slip off and cause great bodily injury as its near the shallow / spa area where injury is most likely to occur. The cost to remove and re adhere these stones may be costly and an estimate is up to 5K+ but as little as $1K. Also at that same time, it may be wisest to consider adding a rubberized mastic to the gap between these stones, which will require some cutting and modification to these stone vs possible just a new stone all together, either way the area on the west of the pool should have some attn to allow a mastic to be filled in the current forming gap so future expansion and contraction can be allowed to move without gaps / tripping hazard forming.

The skimmer throat tiles that directly connect the skimmer are showing signs of issue / movement at the top of the skimmer ever so slightly / calcium pushing through, this may be mostly due to the overfilled status of this pool + use. If the level was more appropriate, then we would see likely less issue / if salt wasn't present likely less signs of issue. If this is repaired or addressed at time of other tile issues, it would be the most efficient ($500-1K worst case), and while it may not be required today, it will relatively soon, so addressing it or at least lowering water level is critical.

Further considering a wireless auto fill like the " Kona Labs Wireless Auto Fill " as a potential candidate.

Recommend treatments to organic matter present / algae in many locations. Approx $200-375 in chemical treatments to remove the organic present IN the water completely.

In a perfect world cycling out the old water present (if applicable) and cycling in new fresh water (approx $100 in water)

Could not fully determine the water loss status here, as Cal hardness may be altered due to presence of salt, therefore relying more on the CYA levels (which again is uncommon in, indoor pool applications (and not recommended). In any case, recommend re checking levels to confirm status.

All parts are present, but recommend updating ; float or at least the float o ring, weighted basket ($300 or less).

Looks to have its overfill port removed / sealed shut.

Main Drain -appears compliant in the Pool, but potentially not compliant in the Spa ? 3 feet cover to cover, recommend attn to resolve ($100 = Value for Attention ). IF so at time of next re plaster consider a new channel drain main drain instead or 2 sperate channel drains if exceeding flow requirements put on by up this application of 5 total HP+!?! of pumping likely 300 PGM through this small confined plumbing 2" x 2 ?! (This is current a safety hazard if my assessment is correct).

For an unknown reason the return cleaner port is disconnected from the plumbing ? Recommend pressure testing first ($300+), before just simply reconnecting, preferably, but not required. Then =
Reconnecting the line and adding it to suction side may be the best overall ($500+) and adding a suction side cleaner (the pool cleaner 4 wheel $500+ in line leaf basket Pentair ($100) would likely be my recommendation for this indoor pool application.

Working Without Issue

Recommend service ($150) to determine element status, which is likely due to be replaced due to age (5 years) - $200-400 depending on quality + updated pressure gauge - liquid filled ($100)

This pump is in good shape for its age (2015). No motor deterioration. Some wicking seen in the seal plate possibly.. but nothing dropping below the motor after approx. 40 minutes of runtime, so monitor condition.

Connect Bonding wire $300 or less if lug is missing

Without issue. Recommend minor service to the pump basket / lid o ring (even though 100% filled with water).

Working without issue. Surprisingly as this heater does off vent into the room its in, I would have expected this heater to error out / potential to cause a fire, but It did in fact heat to 100 with a vengeance (36 Min to heat 72 to 100).

The heater venting appears to be outside in the dirt, and should be re applied ($100) or more ideally updated potentially in size, up to 6 or 8" I believe is called for in the manual, and vent all heater off venting outside with the correct sizing asap ($100-1K).

Heater Manual - Page 25 is where its confirmed
https://www.pentair.com/content/dam/extranet/nam/pentair-pool/residential/heaters/mastertemp/manual/mastertemp-heater-manual-english.pdf

Working panel, but no GFCI except for possibly the lights breaker which is in fair shape? but due to age and condition of the pool lights (condensation present and still powering) this GFCI should be updated at the same time as the other breakers to new GFCI for safety

Approx $400 for the two Siemens and light breakers + electrician fee ($500).

This salt cell is older, power cycling, due to be replaced with a like new cell ($1000) or removing with a dummy cell.

Or consider using a single UV cell like the Pentair, or if space permits, an all in one system (Jandy AOP 25 $3K) with added MDV Vessel for Off Gassing of all Gasses outside the Pool ($1000) as a compact all in one option.

ID recommend updating the plumbing soon. Approx 10 years old, and it may have just needed simple service as is common with these systems every 10 years (open all valving and service ($500+) o ring sets or replace ($1500+) for like new function)