Welcome Home

Welcome to Hallowell!  We are a community of 292 town homes and 356 single family homes located in Olney, Maryland.  Our community features ample open space with attractive walking paths, two ponds, a community pool, tot lots, and tennis and pickle ball courts for residents to enjoy.  We are conveniently located adjacent to Southeast Olney Park, which offers family-friendly amenities (e.g. large playground, picnic gazebo), basketball courts, and sports fields.

The Association is professionally managed by Community Association Services, Inc, (CAS, Inc.) located in Gaithersburg, MD.  Office hours are Monday through Friday, 9 a.m. to 5 p.m.

Community Association Services, Inc., AAMC
 18401 Woodfield Road, Suite H
 Gaithersburg, MD 20879
Office: 301-840-1800 / manager@casinc.biz.


After hours, dial 1-888-788-2678. You will be connected to the management company's emergency answering service. Please remember that if the emergency involves life or safety, you should call 911 first.


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Homeowners and residents of Hallowell HOA please login to TownSq for specific HOA and community information.  New to Hallowell HOA and need to register for the portal?  Click the Login/Register link at the top of the page and select "need to register" - you will be prompted to enter your 11-digit account code and set up a password for future logins.

Download the app or visit TownSq to:

  • Pay online and review your account balance
  • Log and track service requests
  • Submit architecture requests
  • Book common areas and amenities
  • Engage with your neighbors and make your voice count
  • Contact the board or your management team
  • Get up-to-date community news and events