5 CBU Security Features Every HOA Should Demand

Community safety isn’t just about gates, lighting, and security cameras. It begins with the details—like the mailbox. Centralized mail delivery systems, particularly modern STD-4C compliant CBUs, play a frontline role in preventing mail theft and vandalism. For HOA boards focused on community trust and resident satisfaction, it’s critical to invest in the right mailbox features from day one.

STD-4C Mailbox: A USPS-standardized mailbox design required for new multi-unit construction and major renovations, offering horizontal compartments with built-in security and parcel lockers.

1. Tamper-Resistant Locks

Any secure CBU system starts with quality locks. USPS-approved cluster boxes come equipped with hardened, tamper-resistant locks that deter unauthorized access. If your existing boxes use lightweight, outdated locks, they may be putting resident mail at risk.

Q: Can CBUs really prevent mail theft?
A: Yes—especially when equipped with secure locks, internal hinges, and anti-pry construction. A high-quality CBU is designed to resist tampering and keep residents' mail safe.

2. Internal Hinges and Reinforced Doors

Cheaper boxes can be pried open or tampered with using basic tools. Today’s best CBUs feature internal hinges that cannot be accessed from the outside, along with reinforced steel doors and tight seals. These design details add a vital layer of protection and reduce vulnerability.

Internal Hinges: Hinges mounted inside the mailbox body so they are not exposed to tampering or prying from the outside.

3. Parcel Lockers for Package Security

With more residents receiving packages than ever before, secure parcel lockers are a must. These larger compartments are built into many STD-4C CBU configurations and ensure that Amazon and USPS deliveries stay protected until residents retrieve them.

Parcel Locker: A secure, oversized mailbox compartment built into CBU units for the delivery and retrieval of packages.

Q: Do I need parcel lockers in a CBU?
A: Yes—especially in communities with high package volumes. Parcel lockers prevent crowding and keep packages secure until pickup.

4. Weatherproof Materials and Finishes

Weather can be just as damaging as thieves. Modern CBUs feature powder-coated finishes and corrosion-resistant hardware that protect against rain, snow, UV rays, and salt air—extending both security and lifespan.

Powder-Coated Finish: A dry finishing process where color is electrostatically applied and baked on, creating a durable, weather-resistant coating.

Q Will CBUs rust or fade over time?
A: Not if you choose a unit with powder-coating and high-quality materials. These features are standard in today's best mailbox systems.

5. ADA-Compliance and Accessibility

A secure mailbox must be usable by everyone. The best CBU systems are ADA-compliant and accessible to residents with disabilities, reducing liability and enhancing equity within your community.

ADA-Compliant Mailbox: A mailbox system designed to meet the Americans with Disabilities Act standards for height, reach, and accessibility.

Q: Are CBUs accessible for residents with disabilities?
A: Yes—modern CBUs that meet USPS and ADA guidelines ensure all compartments can be accessed safely and comfortably.

Time to Re-Evaluate Your Current Setup?

If your current mailbox system is drawing complaints—or if you’re worried about resident security—it may be time to upgrade.

Forsite specializes in secure, USPS-compliant cluster mailboxes built to withstand today’s threats. From tamper-resistant locks to powder-coated finishes, our products deliver the protection your residents deserve.

Concerned about safety? Reach out and we’ll walk you through the options.