If you have an enforced building code in your area, the HVAC, Sheetrock and deck should be compliant, keeping in mind that the building code is a minimum standard. Workmanship is no longer code language because it’s open to multiple interpretations. You may need to do your own research on the specific materials or methods used on this house, considering what you personally like or will accept.
It may be possible to hire a retired building inspector to give their opinion, but that’s what it will be, not legal or enforceable. A housing inspector may help, but they are rarely licensed. Still only an opinion. I’ve seen many expensive and beautifully finished homes that had multiple framing errors. You can cover up a lot of sins with pretty finishes. Hopefully the house comes with a warranty and you won’t need it. Good luck.

@Julie "I’ve seen many expensive and beautifully finished homes that had multiple framing errors." This was part of my point. I didn't say anything about "legally binding". I just tried to describe that construction is not my career; I cannot research every item to see what the real world experience is as far as typical install errors or inappropriate use.

Unless the builder has a written quality standard, any quality assessment is up to you as the potential buyer. You could hire a local builder or architect to have a look and let you know how the level of fit and finish compares to similar homes in your area within the same price range.

I don’t build cars, but I do a lot of research before buying one. Research the things that really matter for structure and durability. If you have an enforced building code, it should have had inspections during construction where framing errors could have been caught and corrected. First determine if this is the case. If so, call the jurisdiction having authority and request a copy of the inspection records. If there are several structural corrections, see if there was a re-inspection to verify they were fixed. Do research on the brand of windows to see if they have an fenestration ratings. For any interior items that can be replaced without tearing something apart, do they look finished (sealed, caulked, tight joints, etc)? That’s what a pro will look for.

I agree with Charles Ross Homes. Besides a rough and tumble look at the sizing of the HVAC or water heater, done by subs and not by the contractor, I'm not sure there's much that can be learned by "inspecting" a new house. Can you speak to others who own houses this builder has built?

It sounds like you're also concerned about the quality of materials used. Is this a premium house built with sub-premium products, or an average house built with average products? Only you can answer those questions. With any builder and with any development or stand alone site, to an extent, you get what you pay for.

If this builder has a checkered reputation, for me that would be enough to know.

Just having someone look won't tell you much because homes are built in layers and any substandard quality of workmanship won't be visible, but a lot of substandard work can be determined to a point if you're willing to pay the price.

All visible mechanical systems can be checked and verified, and there are many tests which can be preformed such as thermal imaging, blower door test, radon test, moisture vapor infiltration testing through any surface, electrical loading to check every circuit, lifting up a few shingles for proper nailing, verifying ground slope away from exterior walls, probing and collecting soil samples at the level of the foundation to have it classified and compare to blueprint specs for footing spread and thickness and there could be more tests available but would you really want to pay the price? It would take a team of specialists in many fields to give you a good indication of quality but things still could be missed. But one inspector won't have the expertise or instrumentation to do it all, but if there is such a person he/she should be put on a pedestal.

One Holmes on homes episode showed how one subs mistake had nearly destroyed a 8 yr old house and there was no way to discover the issue without removing layers to find it.

It's called due diligence.

https://homeguides.sfgate.com/check-background-general-contractor-8707.html