Tom Napier,
Section 8 has been great for me and other investors especially in the rougher/ borderline neighborhoods but you still have to go through the inspection process to have the unit approved. This could cost most landlords about a month of rent. Below is my list of positives and negatives for section 8 rentals.
Positives:
Government pays on time with direct deposit.
Tenants tend to stay longer due to not many landlords offering section 8 housing
Landlord receives at or above market rents in borderline neighborhoods.
Negatives:
The property has to pass the inspection criteria prior to tenant taking possession. One or more months of lost rents whiles waiting on approval and inspection.
Yearly inspections with corrective items.
Perception of lower quality tenants. (Screen all tenants regardless of section 8 voucher or not).
Real estate is about comfort and some people are not comfortable with section 8 tenants. As long as you screen the tenants and have the right amount of vouchers I think its a great niche strategy for filling your rentals with quality tenants.