What is a Maintenance Agreement? A maintenance agreement outlines the steps one party will undertake to insure the upkeep, repair, serviceability of another party's property.A contractual maintenance agreement is a contract under which a service provider agrees to perform maintenance services. These services include routine maintenance and replacements. A maintenance services agreement is a legal document between two parties in which one party provides ongoing maintenance support for the other party. Texas law states that a landlord must make a diligent effort to repair a problem if it materially affects the physical health or safety of an ordinary tenant. Air Houston Mechanical offers comprehensive maintenance services to keep your HVAC equipment in top shape. Call today to sign our service agreement! You have a right to demand that the landlord repair any condition that materially affects your physical health or safety. That auditors visited (in Fort Worth and.