I can only speak of hot markets in America, which are VERY different than many others, but at least within that:
A "reasonable" house goes on the market. ("reasonable" defined by <1 mil, within an hour commute of a city center) This house will usually be sold within a week or two. Usually less. Definitely less, if it's actually priced within middle-class-affordability (and I laughably define that as ~400-500k). I've seen houses sell the day they listed. The selling process involves showing up at the house during an open house (viewings are possible but rarer in hot markets as typically it's a race to get your offer in and sellers know they don't need to be accommodating; even viewing my house during the closing process was a "if we can fit it in" sort of thing from the seller side) You don't really get to "repeat". If you're very lucky they MAY tell you a competing bid went over your escalation threshold, but for 80% of the houses I put offers on, they look at the escalation guidelines and offers and just make a choice right there. Typically at least someone has offered +50/100k in cash and is going without a loan, so they'll often nab the house without a back and forth with any of the other offers. If the seller agrees, the closing begins. The buyer usually gets 1 shot to make an impression for a given house, usually having to put the offer together within 12 hours/a couple of days max, having seen the house once, usually with a bunch of other people.
A real estate agent helped me in multiple steps of the above.
- Having an offer ready ahead of time with lots of contingencies/tradeoffs well understood so we could tune it quickly and get it out and under the wire.
- Knowing how and where to look for houses before listing, IMMEDIATELY after listing, and that may have been listed ages ago/at bad prices.
- Able to get us contacts with the sellers if an open house time won't work/if we need to ask questions.
- When our BOA agent left us high and dry, he hooked us up with a trusted local lender with a good reputation and used his prior working relationship with her to get our file pushed through in a ridiculous timeline over a weekend so that we could put in a competing bid. (as I said, timelines are nutso)
- Gave us advice on what parts of our offer would have what impact, to what sellers. e.g. 5k vs 3k vs 10k escalation steps? What other caveats? Should compromise on preinspection? etc.
- If anything went wrong, if we had followup questions, needed contacts, he would be extremely accessible, would give us contiguous care (and thus knew what our preferences were, what we were looking for, what offers we were comfortable with/what our finances were) which saved time in rehashing that every few weeks with a new agent; and given that you WILL lose most of the offers you make, this process can go on a very long time so continuity is nice. (we were on the market 1-2 years)