Learn Russian: Вон наш дом, справа. - There's our house, on the right.

Вон is used specifically to point something out at a distance, like saying "Over there!". Вот is used to point out something close to you ("Here is!"). While там simply states the location "there", вон acts like a verbal pointing finger drawing your attention to the house you can see.

Why do we say справа instead of направо for "on the right"?

Справа is used for a static location, meaning "on the right side" (answering где? or "where?"). Направо implies motion or direction, meaning "to the right" (answering куда? or "where to?"). Because the house is just sitting in a fixed spot, we need the location word справа.

Why isn't there a verb like "is" in this sentence?

Russian almost always drops the verb "to be" in the present tense. While English requires "is" to make sense of the sentence ("There IS our house"), Russian simply places the pointer word, the subject (наш дом), and its location side by side without a linking verb.