You can review your HOA's governing documents, also known as the CC&Rs, to understand the proper procedures.

But... what I need to review is how this is achieved as I would benefit from building the new unit as an ADU.

A lot of times it is pulling value from thin air.

They are multiple factors that go into the rate though (such as how high is the loan to value, type of property, credit, to name a few). 

I plan to sell the land and which option would maximize my value?

that we’ve learned in our 24 years, managing almost 700 doors across the Metro Detroit area, including almost 100 S8 leases:Class A Properties:Cashflow vs Appreciation: Typically, 3-5 years for positive cashflow, but you get highest relative rent & value appreciation.Vacancy Est: Historically 10%, 5% the more recent norm.Tenant Pool: Majority will have FICO scores of 680+ (roughly 5% probability of default), zero evictions in last 7 years.Class B Properties:Cashflow vs Appreciation: Typically, decent amount of relative rent & value appreciation.Vacancy Est: Historically 10%, 5% should be applied only if proper research done to support.Tenant Pool: Majority will have FICO scores of 620-680 (around 10% probability of default), some blemishes, but should have no evictions in last 5 yearsClass C Properties:Cashflow vs Appreciation: Typically, high cashflow and at the lower end of relative rent & value appreciation.

This could turn a potential loss into positive cash flow while protecting your property’s value.

While purchasing under market value is a great opportunity, stretching your budget too thin can add significant financial stress, especially during the renovation period.

I know our numbers need to be reviewed but I was hoping to get more guidance on what others have done (or would do) in situations like this, minus the sex offender and neighbors of course.

that we’ve learned in our 24 years, managing almost 700 doors across the Metro Detroit area, including almost 100 S8 leases:Class A Properties:Cashflow vs Appreciation: Typically, 3-5 years for positive cashflow, but you get highest relative rent & value appreciation.Vacancy Est: Historically 10%, 5% the more recent norm.Tenant Pool: Majority will have FICO scores of 680+ (roughly 5% probability of default), zero evictions in last 7 years.Section 8: Rents are too high for the program and cash paying tenants are better overall.Class B Properties:Cashflow vs Appreciation: Typically, decent amount of relative rent & value appreciation.Vacancy Est: Historically 10%, 5% should be applied only if proper research done to support.Tenant Pool: Majority will have FICO scores of 620-680 (around 10% probability of default), some blemishes, but should have no evictions in last 5 yearsSection 8: Rents are usually too high for the program.Class C Properties:Cashflow vs Appreciation: Typically, high cashflow and at the lower end of relative rent & value appreciation.