If your a one man show or a small business with some freelancers or partnered with other work from home guys, there is no need for an office for represantitive reasons.
Surely there are enough renting opportunities if you need a well equipped conference / presentation room, at a time.
Just save that money when your starting your business, nobody cares about that at that business level.
However, when working from home distraction by family, tv, friends, games is always close if you do not set yourself a plan / timetable.
Once you reach the status to employ additional staff, thats the time to rent a nice office and seperate business from private visually.