As for what to look for, it depends on what you want. Are you trying just to add more living space? Or turn part of one level (probably the first floor) into a bedroom and bath for an elderly relative? Your reason for wanting the extra floor and space will greatly influence what you should look for.
At Expand Renovate, our goal is to take the hassle out of the building process. After we sign the contract to go ahead with your renovation extension, you can relax. You can rely on us to take care of all the necessary insurances, plumbers, electricians, charges and building approvals. We also provide you with copies of all the planning and building documents required for your insurance and financing purposes.