Make sure you do an OPRA request to check for open permits and confirm with the town whether the 2/1 below is legal and permitted.

The need for building permits in the counties is limited to plumbing, HVAC, & electrical. 

Assessments in NJ are not done on sale, unless it's a new build or a complete renovation where the permits tip them to reassess, so every three years or so they reassess all of the properties and taxes go up most of the time.

Once entitled( with it is)I can now sell the land I bought for 55k for several hundred dollars and if a get building permits  I can sell for substantially  higher.

You’ll want to check if your specific work falls under their home improvement contractor licensing, or if there are additional local permits required depending on the county.

Ensure the sublease is explicitly permitted in a written agreement with your friend and aligns with local STR laws.

I am currently going through business permit

You must get a permit, drill holes in the bottom, demo the bondbeam down a foot or so, and then fill with compaction inspections along the way..... last time I checked it was about $10,000

Applications were being lost, or the website wasn't permitting tenants to fill them out.

The $56-a-unit process requires landlords to be up-to-date on their property taxes and for the properties to be free of any safety or building-code violations.Since landlords are not legally permitted to collect rent from tenants of a home with an inactive license, the system is designed to serve as a check on property owners, forcing them to address safety violations and pay their taxes.But Philadelphia’s Department of Licenses and Inspections lacks the resources to hunt down property owners who flout those rules, said Karen Guss, a spokesperson for the agency.