Can I install a speed hump on my private road without city approval?

Yes. Private roads are not subject to the city traffic-calming program. The decision authority sits with the property owner or HOA board. Most installs proceed in 2 to 6 weeks from initial proposal to completed install.

Do I need a permit for a speed hump on a private road?

Not in most Oregon jurisdictions. Confirm with your local building department before scheduling -- some cities require a no-fee work-permit notification for any pavement modification, even on private property.

Who is liable if a speed hump damages a vehicle?

The property owner or HOA. General liability insurance covers most claims provided the hump is built and maintained to industry spec (ITE Traffic Calming Manual recommendations). A hump that is over-tall or out-of-profile shifts the exposure significantly.

Do I need to notify residents before installing a speed hump on a private street?

On HOA-controlled streets, yes -- usually 30 days per CCR or board policy. On apartment-complex or single-owner commercial property, lease terms govern. A 14-day tenant notice is the typical Cojo recommendation.

Will my insurance carrier require a specific design?

Many carriers will request the design drawing and ITE reference citations as part of the renewal review. Cojo's project file package satisfies the typical carrier request. If the carrier flags an issue, the most common ask is to pivot from a hump to a cushion on a fire-access route.

Speed Humps on Private Roads: 2026 Owner's Guide

A private road — HOA-controlled, apartment driveway, business-park interior, gated community — can get a speed hump without city approval. The decision sits with the property owner or HOA board. Timelines are weeks, not months. The engineering is identical to a public-street hump. What shifts on private property is insurance, liability documentation, and who owns maintenance. Below: each of those.

Can you put a speed hump on a private road?

Yes. Private roads are not subject to the city traffic-calming program. The decision is governed by the property owner or HOA board under Oregon Revised Statutes Chapter 94 (Planned Communities) for HOA-controlled streets, the underlying property ownership for private commercial drives, or the lease agreement for tenant-controlled corporate campuses. The Federal Highway Administration's traffic-calming guidance applies as design reference, not as legal authority.

Public vs Private Road: The Decision Path

Variable	Public road	Private road
Approval authority	City traffic engineer	Owner or HOA board
Approval timeline	6 to 18 months	2 to 6 weeks
Funding	City budget or cost-share	Owner or HOA
Resident petition	Often required	Per CCRs (often optional)
Emergency-services review	Required	Recommended, not required
Maintenance responsibility	City	Owner or HOA
Liability	City	Owner or HOA

The faster timeline and direct funding are why private-road installs make up about 60 percent of Cojo's annual residential speed-hump volume.

HOA-Board Approval Process

The standard HOA flow:

Identification of need -- resident complaints, near-miss incidents, board-driven safety review
Site walk and vendor proposal -- contractor (Cojo or equivalent) provides design, hump count, and quote
Insurance and liability review -- HOA's general liability carrier confirms the design is acceptable
CCR check -- legal review confirms the install is allowed under the community's CCRs and bylaws
Board vote -- usually a simple majority per the CCRs
Resident notification -- 30-day notice is typical; some CCRs require longer
Install scheduled -- typically 2 to 6 weeks from approval

The CCR check catches a recurring failure mode: some communities have language explicitly restricting "modifications to streets" that requires a community-wide vote rather than a board action. Cojo asks for the CCR before the proposal call.

Apartment Complex and Commercial Drive Process

For a single-owner property -- apartment complex, retail center, business park, college campus -- the process is even simpler:

Property manager or owner identifies the calming need
Vendor proposal and site walk
Insurance carrier notification
Tenant communication (timing per lease)
Install scheduled

Cojo's apartment-complex installs typically run 1 to 3 weeks from initial call to installed hump, depending on weather and scheduling.

Insurance and Liability

Three liability considerations that distinguish private-road installs from public-road installs:

General liability

The property owner's general liability policy covers vehicle and pedestrian incidents on the road. A non-spec hump that damages a vehicle is a tort exposure -- the same as a pothole or a faded crosswalk. The way to manage the exposure is to install humps to ITE spec and document the design decision.

Documentation

Cojo provides every private-road client with a project file containing:

Design drawing with dimensions and profile
ITE / FHWA reference citations
Material spec sheet
Install date and crew names
Warning sign and marking inventory
Photo set (pre, during, post)

That file lives in the property's facility records. If a damage claim is filed, the file establishes that the hump was built to recognized standards.

Tort claim history

Oregon Revised Statutes Chapter 30 (Tort Liability) treats private property owners under standard premises-liability rules. The standard is "reasonable care" -- a hump built and maintained to industry spec satisfies the standard. A hump 5 inches tall with a triangular profile and faded paint does not.

Sample HOA Bylaw Language for Speed Humps

Most communities do not have explicit speed-hump language in their CCRs. The board can adopt a simple operating policy:

> The board is authorized to install, maintain, and remove traffic-calming devices, including speed humps, speed cushions, and speed tables, on private community streets. Designs shall conform to the Institute of Transportation Engineers Traffic Calming Manual and applicable Oregon DOT residential traffic-calming guidance. Maintenance is the responsibility of the association, funded from the operating budget. Installation requires a board vote and 30-day resident notification.

Cojo's HOA project files include a draft policy document the board can adopt at the same meeting that approves the install.

Maintenance Responsibility on Private Roads

The HOA or property owner is responsible for the full lifecycle:

Quarterly inspections -- paint visibility, edge condition, hardware (rubber humps), warning signs
Annual inspections -- full measurement-grade review
Repaint cycle -- 18 to 24 months for water-based paint, 4 to 5 years for thermoplastic
Repair cycle -- crack-fill on demand, full replacement at 5 to 10 years (asphalt) or 12 to 20 years (concrete)

Cojo offers an annual maintenance contract for private-road clients that bundles the quarterly walk, the annual measurement, the repaint cycle, and crack-fill into a single line item. The full scope is covered in the speed hump maintenance reference.

Cost Comparison: Private vs Public Road

Industry Baseline Range

Item	Public road	Private road
Single hump install (ASPHALT)	$2,500 to $5,000+	$2,000 to $4,000+
Series of 3 humps	$2,000 to $3,500+ per	$1,500 to $3,000+ per
Approval and study costs	$3,000 to $10,000+ (city-funded usually)	$0 to $500+
Annual maintenance	City budget	$300 to $800+ per hump

These figures reflect published industry averages. Current market pricing varies significantly and actual quotes may fall well outside these ranges based on site-specific conditions, material costs, and project complexity.

Current Market Reality

Private-road installs run about 15 to 20 percent below public-street equivalents for the same hump because traffic-control requirements are lighter (no full street closure, no flagger, smaller advance-signage package). The savings are real -- a 3-hump series on a private road typically lands $1,500 to $3,000 below the same series on an adjacent public street. See speed hump cost guide for the full breakdown.

Cojo's Tualatin Apartment Install

In March 2026 Cojo installed a single 12-foot asphalt speed hump on the entry drive of a 240-unit apartment complex in Tualatin after the property manager logged 6 reports of children being nearly struck in the leasing-office crosswalk. The board approved the design 8 days after the proposal call; install was scheduled 2 weeks later; total elapsed time from complaint to installed hump was 26 days. Pre-install spot speeds at the crosswalk averaged 22 mph; 30 days after install they averaged 13 mph.

Get a Private-Road Hump Recommendation

If you are an HOA board member, property manager, or business-park facilities lead, Cojo can provide a free site review, a CCR-compliant proposal, and a quote within 48 hours of the initial call. See speed humps guide for the engineering context, speed humps for residential streets for the broader residential framework, speed hump installation in Hillsboro for a local example, or asphalt maintenance services for the full scope.