Land subdivision is a bit like helping Mom slice up her beautiful Apple Pie; it's all so easy, when, like Mom, you've done it a few times. So let's see if we can get the ingredients for a land subdivision correct so you can do it right first time, OK?
Every city or town in the free world has a Town Plan and it comprises, not surprisingly, of plans or maps, usually with lots of different colors all over them, but also lots of words explaining what the colors mean as well as lots of Rules that tell you what you can do with land.
The colors indicate different zonings that your elected Council has decided upon. So say, Residential housing may be Yellow; high density housing like units, condos may be Pink; and industrial Orange, whatever. So you can see at a glance how the town plan is subdivided into land use categories.
Just as you can't build a house anywhere you like, you can't have a farm or a factory in the middle of a residential area either. So the first thing you must do is find out what is the 'Zoning' of the land you own or are thinking of buying. Getting land Rezoned is another issue altogether.
Let's assume your land is zoned for residential housing. The Town Plan will tell you all the requirements you have to undertake for land subdivision. It will tell you the minimum Lot size allowed in a residential subdivision. It will tell you the distance in feet or metres you have to Set-Back each lot from the road, either internal and/or external, as well as the side boundaries of your land.
Now all that seems a bit complicated, but don't worry, there are professional land subdivision experts who will do all this work for you. Depending in what part of the world you come from, you will engage either an Engineer in the USA or a Land Surveyor in Australia, New Zealand, UK or Ireland to prepare you land subdivision plan.
Always engage one who does their main work in your area, because these are the professional where local knowledge is very important. They will know about soil conditions in your area, because they may have done several land subdivisions in the area already and completed soil testing.
They will also know about the provision of utilities like water supply, electricity, gas, telephone. All of these impact on the cost of your development. For example, if water reticulation is not available on your road frontage and the nearest water supply is a mile away, then you may have to pay for the cost of piping water that distance.
It is vital you know this information before you commit yourself to land subdivision costs and so the Engineer or Land Surveyor are very important not only at your investigation stage, but also when you proceed with the land subdivision planning application preparation and lodgment with your Local Authority. These guys will do all that work for you.