Frequently Asked
Questions

Everything from the ground up. Our scope includes engineering drawings, permit filing, concrete foundation demolition and pour, hardware procurement directly from Florence Manufacturing, installation, ADA compliance verification, USPS arrow lock coordination, and final postmaster sign-off documentation.

You sign one contract with one point of contact. There is no separate concrete sub, no separate permit expediter, no USPS coordination on your end.

A standard single-station replacement runs 3–5 business days once permits are approved. Municipal permit timelines vary — we factor that into every project schedule from day one.

Multi-station community replacements are phased so mail service continues throughout. Residents typically experience no more than 24–48 hours without access to their individual station, and we coordinate resident notification through your HOA or property management team.

We design around service continuity. For single-station swaps, the window is typically under 48 hours. For multi-station projects, we phase the work and coordinate with your local postmaster to establish temporary delivery arrangements. You will not get a surprise service interruption — it is scheduled and communicated in advance.

We provide a written project timeline with station-specific outage windows that you can distribute to residents or post on your community board. Resident communication is ultimately the HOA's or property manager's responsibility, but we give you everything you need to do it cleanly.

USPS Standard 4C defines the physical specifications for all centralized mail delivery equipment — compartment dimensions, parcel locker ratios, mounting and height standards, access clearances, and label requirements. Non-compliant installations are rejected at postmaster inspection, leaving communities without mail delivery and triggering costly remediation.

Ironpost Works designs to STD-4C from the first drawing. We have a 100% pass rate on postmaster inspections.

USPS requires a minimum of one parcel compartment for every five letter compartments. On a 16-door CBU, that means at least 2 parcel lockers must be accessible to the carrier. Many older installations fall below this ratio. When we replace a station, we verify and document parcel locker compliance as part of the final sign-off package.

Before USPS begins delivery to a new or replaced mail station, the local postmaster must physically inspect and approve the installation — verifying STD-4C compliance, arrow lock function, and site accessibility. Without sign-off, residents cannot receive mail at that station.

We coordinate this inspection directly. Our project is not complete until you have a signed acceptance document in hand.

Yes. USPS approval is a condition for CO issuance on any multi-unit residential development. A failed postmaster inspection delays CO, which delays move-in, which creates real financial exposure for the developer. This is one of the most common reasons developers call us — we step in, remediate the installation, and turn the inspection around.

PS Form 4056 is the USPS Centralized Delivery Equipment Agreement — the document a building owner signs to establish centralized delivery. PS Form 1507 is used for collection box contracts. Both are part of the compliance package we manage and file on your behalf.

Yes. Under 28 CFR §36.304 and the ADA Standards for Accessible Design, centralized mail delivery equipment at covered properties must meet reach range, clear floor space, and approach requirements. The maximum accessible height for mail compartments is 48 inches per ADA guidelines.

For HOA communities and commercial properties that have undergone Title III barrier removal obligations, non-compliant mail stations can expose board members and property owners to personal liability. We document compliance for every installation.

For multi-unit housing subject to the Fair Housing Act, a minimum of 5% of mail compartments must be accessible to individuals with disabilities. In practice, this typically means lower-tier compartments and an accessible route to the station. We verify this during our free infrastructure audit and flag any gap before it becomes a complaint.

Yes, both are included in every project. We prepare stamped engineering drawings for the concrete foundation, file with the applicable municipality, and manage the permit process through to approval. Permit timelines vary by jurisdiction — Phoenix, Scottsdale, Mesa, Chandler, and Gilbert all have different review windows, and we account for that from day one.

Yes. We install Florence 1570 Series CBUs, 1590 Valiant parcel lockers, and 4C horizontal mail suites. We procure hardware directly from Florence and warranty all equipment per manufacturer terms. We do not install third-party or non-USPS-approved equipment.

We serve the entire Phoenix metropolitan area — Phoenix, Scottsdale, Mesa, Tempe, Chandler, Gilbert, Glendale, Peoria, Surprise, Goodyear, Buckeye, Sun City, and surrounding communities. For large portfolio projects, we can discuss statewide scope. Contact us to confirm your specific project location.

Ironpost Works LLC holds Arizona Registrar of Contractors License #366229 as a CSI Division 10 specialty contractor. This license authorizes us to perform concrete foundation work, structural installation, and specialty equipment installation — the full scope of a centralized mail infrastructure project. You can verify our license status at the Arizona ROC public database.

A complete single-station turnkey installation — concrete demolition and pour, hardware, installation, permits, engineering, USPS coordination, and postmaster sign-off — starts at $7,700 for a standard single-station turnkey scope. Decorative pedestal caps, thermal management coating, or parcel locker upgrades add to that figure.

For communities with multiple stations, per-unit cost decreases at volume. We provide fixed-price proposals — no hourly billing, no open-ended scope.

Every installation is site-specific. Existing concrete condition, station count, parcel locker ratio requirements, ADA remediation needs, local permit fees, and hardware configuration all affect the final number. Publishing a single price would either mislead or scare off the wrong projects. We quote accurately after a free on-site audit — typically a 30-minute site visit with same-week turnaround on the proposal.

Submit a request through our project intake form or call (602) 888-1083 directly. We will schedule a free infrastructure audit, assess the site, and deliver a fixed-price proposal — typically within 48 hours of the site visit.

Our maintenance programs cover annual inspections, hardware lubrication, locking mechanism service, door alignment, weatherstripping replacement, and documented compliance reporting. Programs start at $119 per station per year (Essential) and scale to the Desert Pro and Portfolio tiers, which add priority scheduling, expanded parts coverage, and multi-property account management.

A compromised unit that cannot be secured — vandalism, storm damage, vehicle impact, or a failed lock mechanism that leaves resident mail exposed. Arrow lock failures that block carrier access also qualify. If mail cannot be securely delivered or accessed, it is an emergency.

We offer 24/7 emergency response. Call (602) 888-1083 and a technician will be dispatched. Response time depends on location and time of call, but we prioritize any situation where resident mail is unsecured.