Over two centuries' cumulative experience providing affordable housing solutions!!

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2025 Compliance Summit
In-Person or Online!
October 2 & 3, 2025
Click the image or the button to get more information and to register.
MORE INFOAnnouncing a new HOT TOPIC Webinar Replay | HOME "Remodel" discussion of the new 2025 HOME Rule changes
More information HEREEducation from Costello University
Training from experts with extensive and up-to-date experience providing affordable housing


Live Virtual Training
Customizable webinar-based live training scheduled at your team’s convenience.

Online, On-Demand Training
Engaging, easy-to-implement, and cost-effective courses that will train your property management staff in housing compliance.

In-Person Training
Customizable in-person training with live interaction for your full team.
Other Housing Compliance Services
Our Vision
Housing Matters!
The Costello Companies are a suite of companies dedicated to the above principle as we develop, build and manage multi-family housing.
Costello Compliance is a consulting firm that leverages our relationships with our sister companies and draws on decades of first-hand experience in housing to provide value-rich products and services to the housing industry. Our knowledge and experience puts us in a unique position to provide quality nation-wide consulting and training with individualized customer service to our clients.
