1️⃣ Can use 빌리다 & 빌려주다 to talk about renting a house long term (from months to years?)

2️⃣ And 임대하다/임차하다 for houses only? Not renting anything else?

3️⃣ And lastly, between all these
1) 빌리다, 비리다
2) 임차하다 임대하다
3) 세를 놓다 & 세를 들다
Which is the most to least common?

See a translation

A1. Yes. It is specified on the dictionary that "빌려주다" can be used as "to provide a place or a facility to someone for a specific period so that the person can use it."

e.g.
제작진은 영화 촬영을 위해 6개월 동안 그 건물을 "빌렸다".
The crew "rented" the building for six months to film.
정부는 국내 농업을 장려하기 위해 농사를 짓고자 하는 25-40세 청년에게 토지를 "빌려주기로" 하였다.
The government has decided "to rent" land to young people aged 25-40 who want to farm to encourage domestic agriculture.

However, in formal language, "빌리다" and "빌려주다" which are used for a house, building, facility, or land are likely to be replaced by "임차하다" and "임대하다".


A2. You can also use them for vehicles, land, or a whole building/facility.

e.g.
A: 너 차 샀어?
A: Did you buy a car?
B: 아니, 장기 임대 차량이야.
B: No, it is a long-term rental car.

A3. "빌리다/빌려주다" are the most used words, of course. But as I said above, when you are talking about over-human-sized things such as house, office, car, or land and it is formal situation, it is better to use "임차하다/임대하다", instead. "빌리다/빌려주다" is often used for things that are human-sized or smaller. When it comes to "세를 들다/세를 놓다(주다)", they are spoken language of "임차하다/임대하다", which can only be used for a house. And it is not used on official documents.