Installation
Commercial Mailbox Installation
- USPS-approved mailbox systems for HOAs & apartments.
- USPS coordination & inspection.
- Pads, anchors, tenant notice.
USPS-Approved Contractor · San Diego County
Commercial Mailbox Installation in San Diego County
Turnkey commercial mailbox systems for HOAs, apartments, builders, and facilities across San Diego County. We handle USPS coordination and inspections so you don’t have to.
- • USPS-approved installer
- • Licensed, bonded & insured — CA Lic. #904106
- • ADA-compliant installs
- • Pads, anchors, tenant notice, USPS sign-off
Why Postal Systems
USPS Approved
We manage approvals & inspections.
Licensed & Insured
CA Lic. #904106 – bonded & insured.
Turnkey Installs
Pads, anchors, tenant notice, USPS sign-off.
Warranty & Support
Hardware-backed, responsive service.
HOAs & Property Managers
Apartments & Multi-family
Builders & General Contractors
Commercial & Industrial Parks
Campus & Municipal
20+ years
Experience
500+
Projects completed
100%
USPS sign-off
30+
Cities served
Core services
Compliance-focused installs and replacements with USPS coordination and inspection sign-off.
New Systems
Cluster Box Unit (CBU) Installation
- USPS-approved CBU models to required site specs.
- Concrete pads & anchors.
- USPS approval & sign-off.
4C Systems
4C / Wall-Mounted Mailboxes
- ADA height/clearance compliant.
- Secure tenant access.
- Lobby & package room layouts.
Parcel
Parcel Locker Installation
- USPS-approved parcel lockers.
- Package room / lobby installs.
- USPS coordination.
Service
Repairs & Lock Changes
- Vandalism replacement & lock changes.
- Key/lock support for 8+ doors.
- Secure tenant access.
Accessibility
ADA-Compliant Installs
- Accessible approach/reach, height, and clearance.
- Documented compliance.
- Retrofits and new installs.
Featured projects
Recent installations across San Diego County. Also available in select cities in Orange County and Riverside County.
CBU Installation — San Marcos, CA
Turnkey replacement with pads and anchors.
4C Upgrade — Chula Vista, CA
New wall-mounted units with added capacity.
Vandalism Replacement — Temecula, CA
Secure replacements with lock changes.
Our installation process
Fast, compliant, and coordinated with USPS.
Step 1
Site Visit & Layout
Assess location, layout, and ADA clearances.
Step 2
Detailed Quote
Transparent scope, cost, and timeline.
Step 3
Schedule & Tenant Notice
Coordinate USPS timing and tenant access.
Step 4
Installation
Pads, anchors, secure mounting, and locks.
Step 5
USPS Inspection & Handover
We obtain sign-off and deliver keys.
What our clients say
HOAs, property managers, and builders across San Diego County trust Postal Systems.
“Fast install, USPS sign-off with zero headaches.”
“Clean work and great communication.”
“Handled ADA clearances and inspection for us.”
Popular city + service pages
High-intent local pages for installation, CBU systems, 4C mailboxes, and replacement projects.
- Commercial Mailbox Installation in San Diego
USPS-approved commercial mailbox installation for HOAs, apartments, and commercial sites in San Diego.
- CBU Installation in San Diego
Cluster mailbox installation and replacement with USPS coordination in San Diego.
- 4C Wall-Mounted Mailboxes in San Diego
4C mailbox installations for multifamily and mixed-use properties in San Diego.
- Mailbox Replacement in San Diego
Mailbox replacement and retrofit scopes for aging or vandalized equipment in San Diego.
- Commercial Mailbox Installation in Chula Vista
Turnkey commercial mailbox installations for managed properties in Chula Vista.
- Commercial Mailbox Installation in Oceanside
Commercial mailbox installation for HOAs, apartments, and mixed-use properties in Oceanside.
Service areas
USPS-approved installations across San Diego County.
Ready to upgrade?
Replace or install your mailbox system with USPS sign-off.
Request a Quote
Tell us about your project and we'll follow up with a clear, no-obligation quote.
Contact & Coverage
- Phone
- (619) 461-4787
- Coverage
- Serving San Diego County. Also available in select cities in Orange County and Riverside County.
- Licensed
- Licensed, bonded & insured — CA Lic. #904106.
- USPS
- We coordinate USPS approvals and inspections so you don’t have to.
Commercial mailbox planning resources
Read practical guides for HOAs, apartments, and property managers planning USPS-compliant projects.
Common questions about commercial mailbox installation
Answers for HOAs, property managers, and builders planning a compliant USPS mailbox project.
- What is a USPS-approved commercial mailbox contractor?
- A USPS-approved contractor is licensed to install, replace, and modify commercial mailbox systems — including Cluster Box Units (CBUs) and 4C wall-mounted mailboxes — in compliance with USPS regulations. Postal Systems holds California Contractor License #904106 and coordinates all USPS inspections and sign-off on your behalf.
- What types of commercial mailbox systems do you install?
- We install USPS-approved Cluster Box Units (CBUs), 4C wall-mounted mailboxes, parcel lockers, and ADA-compliant mailbox stations. We pour concrete pads, set anchors, handle tenant notice, coordinate USPS inspection, and deliver keys — all as part of our turnkey service.
- How long does a commercial mailbox installation take?
- Most standard CBU or 4C installations are completed in one to two days once materials are on-site. Larger projects with multiple units, pad work, or replacement of aging systems may take two to three days. We provide a detailed schedule at the quote stage and coordinate timing with USPS to minimize tenant disruption.
- Do you handle USPS inspection and sign-off?
- Yes. We manage the entire USPS coordination process — from submitting the installation plan to scheduling the post-installation inspection and obtaining final sign-off. You do not need to coordinate with the postal service separately.
- Do you serve areas outside San Diego County?
- Our primary service area is San Diego County, including cities like Carlsbad, Chula Vista, Escondido, Oceanside, San Marcos, and Vista. We also take select projects in Riverside County and Orange County. Contact us to confirm availability for your location.
- Are your mailbox installations ADA-compliant?
- Yes. We design and install all systems to meet ADA height, reach, approach, and clearance requirements. We document compliance and can provide ADA-specific layouts for HOAs, campuses, and public-facing facilities.