You might be able to find some materials online but you gamble on the quality.In my case this is what I follow:- Construction material locally so we quickly can resupply - Flooring locally (I find better prices and service this way)- Plumbing locally (I bought online for my first remo and quality was really bad) locally are more expensive but I don't gamble anymore as plumbing is something that is always a time constraints to complete and continue other works.- Electronic fixtures like fans, etc online.

The insurance company may cover some or all of the restoration costs.Scope of Work and Budget:Detailed Inspection: Get a comprehensive inspection to identify all areas of damage, including hidden issues like electrical, plumbing, and HVAC systems.Cost Estimation: Obtain detailed cost estimates for the restoration or rebuilding process from licensed contractors experienced in fire-damaged properties.Environmental Hazards:Asbestos and Lead Testing: Older properties may contain asbestos or lead, which can become hazardous after a fire.

Had one that we found off-market but things fell through during the inspection (electrical and plumbing issues that we didn't have the capital to pay for and the seller wouldn't budge on). 

Then, a plumbing issue.

You navigated the legal complexities, negotiated like a hero, pressed to get your sellers there best outcome, and you made almost half as much as your CPA, an Electrician, nearly 2/3 what you could be earning if you did plumbing or painting as a living....... 

Thank you, and thank for details advice, I really like have no option period, in some of our offer, I think we should have done that, since we don't see much issue with the house except cosmetic, and even though there were issue with foundation and plumbing, they have been fixed with high reputation companies and with transferrable warranty too.

I've met many of them over the the years and I haven't met any of them who regrets it and plenty of them who would recommended (with the caveat that you need to know what you're doing).As you suggested, there are specific risks that don't exist if you invest domestically and it can mean headaches if you don't know what you're doing (but that's the case in the US too).

I was considering getting just SIP panels from china, and reputed SIP panel companies in china says they do not ship electricals and plumbing as local codes monitor them closely.

If you're running plumbing, electrical, HVAC out there it's different than if you're just putting up drywall.

You will have to do some structural improvements, as well as adding electrical and plumbing.