If your house is built on a crawl space is there any obstacle to building a covered patio?

Not hard but get an engineer or architect to design, I have house with a crawl space, covered screen porch, down a set of brick stairs.

You would need some kind of removable access panel/door for the crawl space, like wooden section over the crawl space access.

My house is concrete built on a slab.

@SnipSnip So is mine. So? The Q is about a house built on a crawl space.

@kritiper Do you need access to the crawl space all the way around the house? I don’t remember that. I haven’t had a crawl space in a long time.

It is all up to local code. A reputable builder should know the answer to your question. Either Way, you will need to file for a building permit if you are making these kinds of changes.

@JLeslie If you have a crawl space, it’s better if you can access ALL of the underside of the house because you never know when you’ll need to. Like for electrical/heating/ plumbing additions.

Crawl space access I’ve known had two hatches / doors.

The patio doesn’t have to be a deck. A couple of access points to the crawl space is enough.

Not at my house. The crawl space is about 15 feet from my patio slab. Most people here do detached awnings/canopy.
I’m planning a pergola at some point.

I like the idea of an awning so that when it’s not open the sun comes into the house, but the problem is I’m a mosquito and bee magnet. Having a screened in space is a huge increase in happiness for me.

Although, now that I think about NC has unbelievable pollen for a few months, and probably a 4 season room with large screened windows might be more practical.