Yes, you can add a kitchen. A building permit would need to be obtained for that work. However, if the apartment is going to be rented to a non-family member in the future, there are other requirements to make it a legal basement apartment.
Generally, an engineer would be required to tell us the size of beam that would be needed to open the wall. But, there are instances where a contractor could tell you that.
If you plan on moving power, plumbing, walls, or heating/air conditioning (HVAC) then a permit is required. It wouldn’t be required if you are just painting, replacing cabinets, countertops, etc.
As long as work is progressing and inspections are being scheduled at least once every 180 days, the permit stays active. The cost is based on the value of the project.
You do have to have the permit. An architect and contractor are not necessarily required.
As an owner of the structure, you can do any work on your own home if you live at the home. If you have anyone else work on it, they must be a licensed contractor. A permit needs to be obtained. Having those original plans should help you in submitting for the permit but the plans would need to be updated to show how you are proposing to finish it.
No, any type of framing/adding walls requires a permit.
If you plan on moving power, plumbing, walls, or heating/air conditioning (HVAC) then a permit is required. It wouldn’t be required if you are just painting, replacing cabinets, countertops, etc.
Pre-built buildings whether from a kit that you obtain from a manufacturer/supplier or that you buy from your neighbor that you want to move onto your lot in Orem will need to have a permit and be inspected if they are more than 200 square feet.