We should set it up so that it is based on air, water, noise pollution zoning: Law offices next to (or inside a single family house should be OK). However, if t

We should set it up so that it is based on air, water, noise pollution zoning: Law offices next to (or inside a single family house should be OK). However, if the law office attracts 50 cars per day, then obviously they are going to break noise/air pollution requirements. Similarly there's no way for a quiet old couple that wants a quiet neighborhood to stay quiet unless the zoning allows for it. A lot of people would consider a Q1 zone anti-familyist but the REASON such a zone would be desireable is that's what rich people pay for - they only want to hear their own noise - so they end up buying 7 lots around their mansion. We shouldn't make the need to want absolute peace and quiet a price but instead just let that group of people that want the same thing live next door to each other. Instead we encourage people to buy rural properties in a forest. Sorry for that aside but zones for quiet level, air and water pollution levels - but traffic induced by business should be considered as part of the zoning, and then get rid of the residential / commercial separation - just focus on the pollutions.