The 50% rule states that approximately 50% of EGI will typically be consumed by operating expenses.While the 50% rule provides a quick estimate, actual expenses can vary widely depending on the property type, location, age, condition, tenant mix, and market conditions.Here's an example: if a property generates $200,000 in EGI per year, the 50% rule suggests $100,000 would go towards operating expenses like taxes, insurance, utilities, and property management.

Purchase price: $1,870,000 Cash invested: $300,000Offering a sliver of ocean view from upstairs, plus an ideal setting conveniently close to the area's most popular shops and restaurants, there's plenty to love in this location.

Not saying you are wrong, but the metrics have a local element.

Where (in which state) is the townhouse located?

I'd add:1) Start going to local real estate meet ups and networking.

Instead of the precise address, you can describe the general location or neighborhood where the property is located. 

If so, I would recommend using local data, since national data is not exactly useful on the coasts.

It seems that if my parents transfer the property to a LLC in which each owns a 50% interest, the default federal tax classification would be a partnership if we do not live in a community property state and the property is not located in a community property state?

Obviously there is a lot to discuss on this topic, but for a very quick glance, here are a few pro's and con's to consider when thinking about section 8 rentals:Pros:Guaranteed Rent Payments -> The government pays a significant portion (if not all) of the rent directly to the landlord, providing a reliable and steady income stream.High Demand -> There is often a high demand for Section 8 housing, reducing the risk of long vacancy periods.Cons:Inspection and Compliance -> The property must pass an initial inspection and comply with health and safety standards set by the local housing authority.

Being an investor and lender myself, I have networked with many local banks and found one bank that is able to do investment HELOCs.