Over two centuries' cumulative experience providing affordable housing solutions!!
Get the Costello Compliance App!Ā Available inĀ the Apple or Android App Store.
Tax Credit 101
The fundamentals, not the basics.
Four live, three-hour webinars covering Income, Assets, Students, and Rents & Utility Allowances from October 2026 through January 2027.
$295 per session | Complete series: 4 for the price of 3 — $885
Learn More & RegisterOnlineĀ seats are still available!
MORE INFORMATIONNHTF Compliance Success!
On-Demand Webinar Replay
Practical NHTF compliance training focused on eligibility, rents, unit designation, layered programs, monitoring, and confident NHTF decisions.
90-minute replay | Practical workbook | Required Quick Quiz | 30 days of access
$199
MORE INFOEducation 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.