Building in a porch - do I dare to do it myself?

[gryden]

I am considering enclosing my porch, which would then become our new hallway.

The porch is approximately 300x160 cm and I'm wondering how complicated it would be to take on this project myself. I feel quite confident that I can handle it practically, but I'm more uncertain about how to build everything technically to follow all industry standards and so on. Walls are fairly simple, but my biggest concern is the roof and especially the roof angle (where the wall meets the roof).

Is this something an enthusiastic amateur should be able to handle? I have renovated the entire interior of the house, mostly surfaces, but also installed my own kitchen and built my own bathroom with waterproofing, tiles, and everything that entails. However, I am a novice in more large-scale carpentry constructions, with interior walls being the only similar thing I've done.

An alternative might be to outsource the construction of the frame and then install windows, doors, and the like myself.

 

[para]

What do you think about the foundation? Is it a concrete slab? Does the basement extend underneath?

 

[gryden]

How do you think about the foundation? Is it a concrete slab? Does the basement extend underneath?

Yes, it is a concrete slab, but the basement does not extend underneath.

I haven't considered that it could be a potential problem. There are many other houses of the same type in the area that have already enclosed the porch in the way I'm considering. I don't think any of them have done anything with the foundation. But it's worth a little research.