These platforms typically have billing policies where you pay a per unit fee per month to the software and you get regular updates and support each month.There are a number of low-cost platforms available that are able to offer you a lower price by passing along some of the costs to your tenants (payment processing fees, applications, tenant screening, etc).

@Polat Caglayan very ambiguosu question, but read the helpful info below to guide your next set of questions:)-------------------------------------------------------------------------------------------Recommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

Typically, structures are grandfathered under old codes and zoning in which case it would be called compliant, but non-conforming. 

Here’s how to find a broker you can trust:Ask for Referrals: Reach out to fellow investors or real estate agents for recommendations.Check Credentials: Look for brokers who are licensed and members of professional organizations, such as the National Association of Mortgage Brokers (NAMB).Review Their Track Record: Ask about their experience with real estate investment loans and request client testimonials.Interview Multiple Brokers: Prepare questions about their lender network, fees, and typical loan turnaround times.Evaluate Their Communication: Choose someone who listens to your needs and provides clear, honest advice.4.

You'll typically need to set up your account and get familiar with the process of working with the local housing authority.

I would read up on "Squatters Rights" laws and how long a typical eviction takes to execute.

Do you typically pay someone to install? 

While these vendors are typically reputable and skilled, you might not get the best price compared to shopping around directly.

@Serge Hounkponou Recommend you first figure out the property Class you want to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

@David F.As Russell mentioned co-ops are probably 1/2 the price of a condo and you would also have extensive costs to set up a co-op and typically it’s my understanding the builder funds the first 1-2 years of reserves.