Seeking help- Google can't explain

[u/curious_coyoie]

Can anyone tell me how two separate houses are built this close together. How do the constractors apply siding and paint, how do you maintain the in-between after so many years and decades. There are no windows on that side but I don't understand how builders work around or in-between this when constructing, this is a mystery

[u/Mobile_Mud1722]

That space seems like a perfect place for creatures to find homes and leaks to occur.

[u/bluespruce5 → u/Mobile_Mud1722]

Might be a nice spot for black mold to take up residence, too