Jurisdiction and research scope
Unincorporated Pima County, Arizona only. Relevant §18.09.020(B) and §10.40.050 text in the official 2026 S-64 code was reviewed October 20, 2026. The trailer storage rule names particular zones; motorhome classification, other zones, occupied uses and later uncodified changes remain to confirm.
Research by Can I Park My RV?Official county sources; access limits shown belowEditorial standard
Unincorporated Pima County RV parking at a glance
| Location or use | What to check |
|---|---|
| Named trailer zones | SR, SR-2 and CR-1 through CR-5. |
| Placement | Rear of principal dwelling, with specified shielding. |
| Parcel count | No more than one such trailer. |
| County road weight | Over 20,000 lb GVWR; actual listed service exception separate. |
| Sleeping / utilities | Not authorized by unoccupied trailer storage. |
Does a Tucson mailing address use this County rule?
This guide covers unincorporated Pima County. Confirm the governing boundary with the County; a Tucson postal address does not establish City of Tucson or County jurisdiction. For zoning research, follow the County’s PimaMaps site-information instructions: search by address or parcel, open the parcel card and choose “More Information” for the County zoning designation and linked code section. A map result does not itself approve RV storage or resolve the governing boundary. The two local rules below have their own narrower location tests.
November 8, 2026 lookup-source check: verified the County’s published search and parcel-card instructions, not an interactive map result for a particular property. The October 20 legal review and its limits remain unchanged.
Where can an unoccupied trailer be stored?
Section 18.09.020(B) applies in SR, SR-2 and CR-1 through CR-5. A trailer not used residentially must be behind the principal dwelling and kept in a garage, under a ramada or behind planting tall enough to shield adjoining properties. A front driveway or fence by itself is not substituted for this list.
How many trailers does the named-zone rule allow?
Subsection(B)(2) limits the parcel to one such trailer. Count the residential lot or tract, not one space per resident. Other zones and uncertain motorhome classifications need a separate County answer; the guide does not extend the rule to every RV type.
Does an RV face the 20,000-pound road rule?
Section 10.40.050(B) addresses total gross vehicle weight rating above 20,000 lb, including combinations, on dedicated County road right-of-way within or contiguous to primarily residential zoning or use. The code defines the County road system dedication. Being lighter does not independently grant RV parking permission.
Can a heavy vehicle stop for loading or service?
Subsection(C) permits the listed temporary goods delivery, pickup, loading or unloading, and construction, repair or similar service to property or utilities. Remove the vehicle promptly when that activity finishes. A parked RV waiting for a future vacation does not automatically fit this exception.
Do signs still apply to a listed service stop?
Subsection(A) independently prohibits parking on designated and signposted streets or portions. The subsection(C) exception expressly concerns the weight prohibition in(B), so it is not treated as overriding every posted restriction, access condition or other law.
Can I sleep in a trailer that meets storage conditions?
The storage route concerns trailers not used for residential purposes. It does not establish guest sleeping, continuing residence, utility connections or a repair business. Present the actual proposed activity and parcel zoning to County Development Services instead of treating storage compliance as an occupied-use permit.
Who to contact for your setup
Bring the address, governing boundary, vehicle class, proposed footprint and actual use to the local planning and traffic authority. Ask about the provisions and source limits linked above before relying on a special exception.
Use the Unincorporated Pima County parking checker to organize the starting conditions. The checker cannot approve a parcel, a variance or an unverified exception.
Official sources reviewed October 20, 2026
- PimaCounty §18.09.020(B): unoccupied trailers
2026 S-64 relevant B text: named SR/SR-2/CR 1-5 zones; trailer behind dwelling; garage, ramada or tall planting; maximum one trailer.
- PimaCounty §10.40.050: road restrictions
2026 S-64 full A-D available. Signposted bans; GVWR greater than 20,000 lb on dedicated County ROW within/contiguous residential land; actual listed delivery/service exception with prompt removal.
- PimaCounty official code entry
County code entry establishes local publisher relationship; incorporated Tucson and other municipalities excluded.
A review date records when we checked these sources. The notes above explain any use of older code editions or limits on access to the full source; an address-specific county determination may still be required. Read our research method.
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