Guides
Car wash site selection and location, reviewed without the sales pitch
The practical question behind 'car wash location guide' is how the decision will work during an ordinary operating day. Strong plans make assumptions visible. They.
What to take away
- Match the site to the wash format first. An in-bay automatic and a conveyor tunnel need different stacking, utility and exit geometry.
- Count traffic by direction and by hour, then test turning access. A large daily total on a divided road with no crossover is noise.
- Get zoning, the discharge path and utility capacity confirmed in writing before design money is spent.
- Compare full occupancy cost, not rent alone. Typical planning ranges add 8 to 12 percent of gross sales beyond base rent.
- Set walk-away limits in dollars and days before you make an offer, then keep them in the deal file.
Read the parcel through the format you plan to build
A parcel that suits a self-serve row will not carry a tunnel. Raw traffic volume matters less than how many of those vehicles can reach your entrance and leave without conflict. Pick the format first, then score sites against it.
| Format | Typical cars per hour | Lot needs | Frequent site failure |
|---|---|---|---|
| Self-serve bays | 3 to 6 per bay | Wide aisles, drying area | Vacuums too close to bays |
| In-bay automatic | 12 to 20 | 8 to 12 stacking spaces | Single shared entrance and exit |
| Conveyor tunnel | 60 to 120 | Long queue and long exit | Median blocks the turn-in |
Those figures are typical published ranges, not a forecast for your parcel. Use them to size the lot before you size the rent. The wider demand and corridor logic sits in location strategy for a car wash business, which covers how catchment and competing washes change the answer.
Traffic counts and access analysis that survive review
Start with the state Department of Transportation count for the station nearest your approach side. It gives the direction split, not just a headline total. Then verify it yourself.
- Record turning movements in 15-minute blocks for two weekdays and one weekend, covering four hours around your expected peak.
- Map median openings, signal phases and posted speed. A 45 mph approach with no left-turn pocket suppresses impulse volume.
- Walk the exit at school pick-up and at retail peak, when a shared driveway is busiest.
- Confirm a delivery truck, a fire engine and a rejected vehicle can each clear the lot.
Circulation decides how much of that count you convert. Queue geometry is covered in car wash lot design for faster queue flow, which explains one entrance and one exit in practice. ASTM also publishes layout and queue flow guidance for car wash facilities that is worth reading before you draw a plan.
[figure 2]
Traffic movement study checklist
- Count vehicles by direction and hour
- Compare weekday, weekend, season, weather
- Track turning movement and speed
- Check signal access and median restrictions
- Map likely approach path
Permits, zoning and utility checks before closing
Work through this list with the responsible office, not with a broker summary. Ask for each answer in writing and keep the reply in the deal file.
- Zoning or conditional-use approval, with every condition copied into the file.
- Setbacks, landscaping, sign height, lighting spill and permitted hours confirmed by the planning office.
- Discharge path confirmed by the local pretreatment program, including sampling or reporting duties.
- Water service size, static pressure and meter capacity confirmed by the water utility.
- Stormwater coverage and any industrial permit requirement identified for the actual activity.
- Reclaim, equipment room and chemical storage space measured against the units you intend to buy.
A single automated wash can be classed as an industrial user, so the local pretreatment program may apply rules to what you discharge. The EPA describes how those programs treat industrial users and who holds the permit. Settle that path early, because a blocked discharge route can kill a deal after deposit.
Water volume per vehicle also shapes the utility answer. EPA WaterSense guidance on vehicle washing covers reclamation by wash stage and how operators measure savings. Cold markets add frost depth and road salt to the drainage question, so Alberta sites should confirm both with the utility.
The same question is worked through from the plan side in car wash plan: what to include for owners.
[figure 1]
Water, sewer, drainage checks
- Service size, pressure, meter
- Sewer connection and pretreatment
- Reclaim design and stormwater separation
- Trenching, grading, winter needs
- Fees and upgrade responsibilities
Example: one in-bay automatic on a divided four-lane road
Assume the state count near the site reads 24,000 vehicles per day. Suppose 62 percent travel the far side and the median has no opening for 1,300 feet. Your accessible count is roughly 9,100 per day.
Typical capture for a visible in-bay automatic runs 1 to 2 percent of accessible traffic. At 1.5 percent, that is about 135 cars per day. One bay at 14 cars per hour across 12 peak hours offers roughly 168 cars of capacity. Demand fits one bay with little margin.
Now test cost. If base rent plus common charges would exceed 10 percent of projected gross sales at that volume, the site does not close at this capture rate. Renegotiate, or walk.
Occupancy cost and the walk-away rules
Add debt service, common charges, property tax, insurance, utilities, water and sewer fees, maintenance, landscaping, snow, security, deposits, personal guarantees and restoration duties at exit. A lease can look cheap on base rent and expensive on everything else. The line items to keep and the ones to cut are compared in car wash lease costs and site requirements.
Walk away if any of these is unresolved 30 days before closing: written sewer or discharge approval, turning access, a utility upgrade with no fixed price, or an occupancy cost above your cap with no believable path to volume.
Continuing because design fees are already spent does not improve the result.
