Union Portland Storage
2956 Warehouse Blvd · Portland, ME
About Union Portland Storage
Union Portland Storage is a specialty self-storage facility in Portland, Maine, established in 2016. The site supports wine storage, military & pcs storage, document & records storage, bulk & tank storage, with on-site staff, controlled access, and unit sizes ranging across the most-requested footprints. Renters in this market often choose Union Portland Storage for the combination of climate stability, security posture, and proximity to Portland's residential and business districts.
The facility tracks closely with the broader Maine specialty-storage profile: indoor units run climate-controlled with HVAC and dehumidification, while outdoor and drive-up bays support oversized goods, vehicles, and trailers. The on-site team is available during business hours for move-in coordination, packing supplies, and unit upgrades, and electronic keypad entry plus video surveillance secure the property outside staffed hours. If you're storing anything sensitive — wine, vehicles, fine art, archival records — request the climate logs and access policies before reserving; this facility will share them on request.
Specialty conditions
Each storage type at Union Portland Storage has its own conditions and operating norms. Climate-controlled and wine-grade units are temperature- and humidity-managed with continuous monitoring. RV and boat bays are sized for full-size rigs and many cruiser-class boats, with shore power and dump-station access available at participating sites. Document and records storage follows industry chain-of-custody norms with logged retrieval. For vehicle and fine-art storage, expect indoor bays with battery tending or museum-grade conditions, respectively. Bring your specs and the facility will confirm fit before move-in.
Specialty types supported
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Wine Storage
Temperature- and humidity-controlled environments engineered to mimic underground wine cellars. Typically held at 55-58°F with 60-70% relative humidity, with low-vibration construction and UV-filtered lighting.
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Military & PCS Storage
Flexible, long-term storage for service members during deployment or PCS moves. Many facilities honor military discounts and DPS-aligned billing schedules.
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Document & Records Storage
Climate-controlled, fire-suppressed records storage with chain-of-custody logging. Many facilities are HIPAA- and FACTA-aware with destruction services and pickup logistics.
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Bulk & Tank Storage
Above-ground tanks for water, fuel, agricultural inputs, and industrial liquids. Includes containment, gauging, and scheduled delivery coordination.
Unit sizes & estimated pricing
| Size | Sq ft | From / month | |
|---|---|---|---|
| 5×5 | 25 | $62 | Check availability |
| 10×10 | 100 | $186 | Check availability |
| 10×15 | 150 | $191 | Check availability |
Pricing reflects starting rates from the directory's last verification cycle and may vary based on availability, promotions, and contract length. Confirm at quote.
Amenities
- 24/7 access
- Climate control
- Indoor units
- Outdoor units
- Electronic keypad
- On-site manager
- Free move-in truck
- Boxes & supplies
- Wine cellar conditions
- RV dump station
- Fire suppression
What renters say
“I store backup hard drives, archival prints, and seasonal gear here. Climate is dialed, and the keypad-only access actually feels like the data is safer than at my studio.”
Hannah Cho — Wedding photographer
“HIPAA-conscious, fire-suppressed, and they handle pickup with our compliance officer present. The transition from in-office boxes was painless.”
Sara Lindgren — Records manager, hospital system
“Keeping a backline rig at room temperature without humidity damage is harder than it sounds. Their indoor unit holds steady and the 24/7 access matters when load-out runs late.”
Will Okafor — Touring guitarist