Again, it's best to check with the Houston Permitting Center and/or the city's Planning Department to determine the specific regulations that apply to your property.Overall, the process of converting a detached garage into an ADU in Houston, Texas, can be complex and may require the assistance of professionals such as architects, contractors, and attorneys.

But I'm also curious about areas like Hungarian Village, Southern Orchards.I'm an architect with a little experience general contracting. 

What is the name of the architect you used? 

The process for my county was pretty straight forward, just needed to include before and (proposed) after drawings (which were hand drawn, no architect needed) showing the 2 walls and electrical outlets/switches.

Lastly, if you have a question about a condition on site, have the architect or engineer come out to inspect and issue a report on findings and suggested action plan.If you consistently complete these steps you will be far better protected than the person who has the most elaborate web of entities but performs their duties irresponsibly.

Engage an architect, they will be able to advise you on how all of the issues written about here do or do not apply to your specific parcel. 

I've completed several condo conversions here in Columbus and the attorney fees were around $5k, plus you need to hire a survey company to provide you with a condo survey, and you will also need to hire an architect to draw up the final layout and measurements of the interior....both of these documents from the surveyor and architect will then become part of your HOA condo docs.

Smith, RA - Principal Architect at Architect Owl PLLC (Licensed in NY & CT)

I do have the architect exploring other options so far as an Ohana or another single family home being allowed on the R20 lot however the permitting approval process for a single family home of any nature can be quite long, at least that's what I've been told.

What even is an "offshore Architect".