Manage all your Properties, Tenants, Leases, Payments, Income, Expenses...

Landlords, Start Now for Free!

Mobile Apps

Get the Rentsum App for Android and IPhone.

Google Play App Store



You can add an unlimited amount of Properties and Tenants. Keep track of all income and expenses!


We offer a free trial, fully functional, for 3 months. Want your own custom domain solution? Contact us for a custom quote.


Get alerts when leases expire, multiple leases per tenant, reoccurring charges weekly, biweekly or monthly!


Keep track of multiple Payments per tenant easily, send payment receipts!


Manage your expenses, get a summary and detailed view of your Property Expenses.


Automatic tenant charging based on lease information, supports reoccurring charges monthly, biweekly or weekly.


Get a summary of your Properties, see your return of investment!

Mobile Freindly

Use on any mobile device!

Multiple Users

Share property management with other users.



Tenant Portal

Tenants, Connect with your Landlords easily!

View Charges

Payments History

Lease Information

Coming Soon!

Send Maintenance Requests

About Rentsum

Dedicated Team of Programmers

We work to bring the best for you! We will support you all the way, which includes free upgrades when new features are released.

Experience Real-estate Owners

Rentsum programmers are also successful real-estate owners from Brooklyn, NY. We saw a market need for an easy to use software package for small and large property owners, so Rentsum was created.

Hosted on Secure Microsoft Azure Cloud Servers

The system is built to be secure. is being hosted by Microsoft Azure using the most advanced encryption and password hashing.

Commitment to Success

Try the risk free - 20 tenant offer and you will not regret it!
The system will be customized to fulfill your needs.

We Constantly Improve

Coming Soon! A tenant portal for making CC payments and viewing payment history. Contact us with your suggestions, we will be glad to accommodate your needs!

We Value Your Feedback

At Rentsum we are committed to the delivery of excellence by adhering to the highest customer service standards. Whether you are providing feedback, paying a compliment or making a complaint, your input is the key to improving our website.

Jump right in
You'll fall in love with what we build.

Let's Get Started!

Support hours
Monday-Thursday 9-6, Friday 9-12 EST.

Send us an email
We'll get back to you within 2 hours.