A Lookup Table You Can Actually Use
Most accessible-parking guidance buries the count in legal language. This page does the opposite. Find your total number of striped parking spaces in the left column, read your required accessible and van-accessible counts across the row, and you have your answer in seconds. Keep this open while you walk your lot.
The numbers come from the 2010 ADA Standards count table, which sets the minimum accessible spaces required based on lot size. Oregon follows this federal baseline and layers its own signage and enforcement details on top. If you want the reasoning behind the table rather than just the numbers, our companion piece on how many accessible spaces your lot needs walks through it. For the complete compliance picture, the pillar on ADA parking compliance in Oregon ties everything together.
The Quick Reference Table
| Total Parking Spaces in Lot | Minimum Accessible Spaces | Minimum Van-Accessible |
|---|---|---|
| 1 – 25 | 1 | 1 |
| 26 – 50 | 2 | 1 |
| 51 – 75 | 3 | 1 |
| 76 – 100 | 4 | 1 |
| 101 – 150 | 5 | 1 |
| 151 – 200 | 6 | 1 |
| 201 – 300 | 7 | 2 |
| 301 – 400 | 8 | 2 |
| 401 – 500 | 9 | 2 |
| 501 – 1,000 | 2% of total spaces | 1 per 6 accessible |
| Over 1,000 | 20, plus 1 per 100 over 1,000 | 1 per 6 accessible |
The Van Rule That Catches People
Across the count table runs a separate rule: at least 1 of every 6 accessible spaces, rounded up, must be van-accessible. That is why the van column climbs from 1 to 2 once you cross into the 201-and-up range, and why it keeps scaling on large lots.
Work it out by dividing your accessible count by 6 and rounding up. Four accessible spaces means 4 ÷ 6 = 0.67, rounded up to 1 van space. Seven accessible spaces means 7 ÷ 6 = 1.17, rounded up to 2 van spaces. Thirteen accessible spaces means 13 ÷ 6 = 2.17, rounded up to 3 van spaces. The van count never rounds down. Our deeper guide on van-accessible space requirements covers the dimensions and signage that go with each van stall.
The Rounding Rule for Percentage Lots
Once your lot tops 500 spaces, the count switches from a fixed number to 2 percent of total spaces. Round any fraction up to the next whole space, never down. A 700-space lot calculates to 14 accessible spaces (700 × 0.02 = 14). A 650-space lot calculates to 13 (650 × 0.02 = 13). A 730-space lot calculates to 14.6, which rounds up to 15.
For lots over 1,000 spaces, the formula becomes 20 accessible spaces plus 1 additional space for every 100 spaces, or fraction thereof, above 1,000. A 1,450-space lot needs 20 + 5 = 25 accessible spaces, because the 450 over 1,000 rounds up to 5 increments of 100.
Read Your Lot Correctly Before You Count
The table only helps if you count your total spaces correctly. A few things to confirm before you pull a number off the chart:
- Count the whole lot served by an entrance. If one lot serves several entrances, accessible spaces should be distributed so each entrance has a short accessible route, not clustered in one corner.
- Medical and outpatient facilities run higher. Outpatient medical facilities require accessible spaces well above the standard ratio, and rehab and physical-therapy facilities higher still. The base table does not apply to those use types.
- Each parking area can be counted separately in some multi-lot configurations, which can change your per-lot total. When in doubt, treat each separately striped lot served by its own entrance as its own count.
- Future striping changes the count. Adding spaces in a restripe can push you into the next bracket and require another accessible stall.
These wrinkles are exactly why the table is a starting point, not a final answer. Use it to estimate, then confirm with a site survey before you commit paint to pavement.
When Your Count Is Short
If you walk your lot against this table and come up short, you have a compliance gap that is usually inexpensive to fix during a restripe. Converting a couple of standard stalls to accessible stalls with proper aisles, adding a van-accessible space, and installing compliant signs is routine work when a lot is being repainted anyway. The expensive version is waiting until a complaint or a repaving project forces the issue.
A restripe is the natural moment to true up your counts. The lot is already getting fresh paint; laying out the right number of accessible and van stalls at the same time costs far less than a second mobilization later.
Get Your Count Verified
Cojo Excavation & Asphalt measures your lot, counts your spaces, and confirms whether your accessible and van-accessible totals meet the table, then stripes the layout to match. See our professional striping services, or request a free quote and we will check your count against your actual lot.