"What would be the visa I need to stay the longest time without renewing"

What are you even talking about? You want to just live in Thailand without having to do anything? What if a Thai person wants to live in your country? It's as simple as them just saying they want to and they can go there without having to do anything?

You get a retirement visa, and then you get annual extensions with relatively little paperwork. Or you get a marriage visa and apply for annual extensions with a lot of paperwork. If you don't like paperwork then Thailand isn't for you. Owning a house literally means nothing as far as your ability to stay in Thailand.

@Brian *********

no. That's just the way to get an extra year without applying for anything. But once the visa expires your only option is to go home or to apply for the extension from immigration. The requirements are the same as the non-O extension except you'll also need the mandatory insurance, so it's not a good option. At that point you need to have the 800k in your Thai bank and to have the insurance. If you can do that then you are better off getting a non-O so there's no insurance requirement.

@Ar ******

you fill out this form and then go to second page. Then choose fast track / VIP entry option. Sorry I don't know the exact name they use. But once you submit the form they'll contact you because they need to see your entire passport to get the price from the airport officers.

No. That's the entire point. These agencies have contacts with immigration, and often send the passport information of everyone that they will be taking to get it approved by the officers at the border. Then when they arrive everything is already arranged to facilitate a quick out and back in. The officers have already received their special contribution to help with this.

@Ar ******

The owner of this group has a service. Fill out this form and then on the 2nd page choose Fast Track / VIP Entry.

First of all, just know that Malaysia is one of the worst places when it comes to DTV applications. They are VERY slow request documents you already sent multiple times, and just make the entire process very complicated and and difficult.

Second, one of the required documents for a dependent DTV is the already issued DTV of the sponsor. So you must get your DTV before you can submit anyone else's application.

Given the timelines for Malaysia, and that you have to submit twice, I would expect at least 2 months total for the entire process if you do it there.

@Porky *****

There have been more and more reports of immigration visits for retirement extensions lately.

@Brian *********

You apply at immigration

Any bank, as long as the account is in your name. Each embassy sets their own requirements though.

Each person needs to have their own TDAC. I don't believe the official website has any way to combine entries. It's a very short form, it won't be difficult to just submit 3 times.