Parking lot paving, sealing and striping
Paving and striping are two different licences, and almost nobody holds both.
Parking lot work is the opposite of fire protection: nothing forces the date, no authority fails you, and the deadline is set entirely by how bad the surface has become. That removes the captive dynamic — and introduces a different problem, which is that scope is almost entirely discretionary.
Overlay, slurry seal, crack fill, full-depth patch, and grind-and-replace are different jobs with an order-of-magnitude spread in price, and the terminology is used loosely enough that two bids can describe different work under the same word.
What authorizes this work
C-12 Earthwork and Paving covers the paving. C-32 Parking and Highway Improvement covers striping, signage, wheel stops and bollards. They are separate classifications.
An owner repaving a lot and restriping it is frequently buying from two licence classes without being told so. This is worth confirming up front, because a paving contractor who subcontracts the striping should say so, and the scope should state who is responsible for layout, ADA stall dimensions, and accessible-route compliance.
Sonoma County · CSLB licence master
- 69 Sonoma County contractors hold a C-12 with no C-32.
- 14 hold a C-32 with no C-12.
- Exactly 1 holds both. A further 2 carry a C-32 inside an A General Engineering licence.
A category example
What this looks like when it goes wrong.
Anonymised. No contractor is named and no finding of misconduct is made or implied — the point is the structure, which repeats across companies.
- The situation
- An owner sought bids to resurface a commercial parking lot and had no prior experience with the trade.
- The diagnosis
- Three bids came back describing the work in different terms, at different depths, with different preparation, and with striping sometimes included and sometimes not.
- The decision
- Pending — this project is in progress.
- What happened
- The comparison could not be made on price until each bid was restated as the same scope. Where a bid did not state its treatment depth or its preparation, that was a question rather than a discount.
The check that would have caught it
Before comparing any two paving numbers, write down the treatment, the depth, the preparation, the striping scope, and the licence class performing each part. Bids that do not state those things are not cheaper; they are less specified.
The lesson, and what it is not
With no regulator setting a deadline, the risk shifts from being sold an unnecessary cure to buying an under-specified one. The discipline is the same: normalise the scope before you compare the number.
Before you authorize
Ask these, in this order, in writing.
None of these accuse anyone of anything. A contractor worth hiring answers all of them without difficulty, and the answers are what make two bids comparable.
- 01Which specific treatment is being quoted — overlay, slurry seal, crack fill, patch, or grind and replace — and at what depth?
- 02Is striping included, and under which licence classification is it being performed?
- 03Who is responsible for ADA stall count, dimensions, and accessible-route compliance?
- 04What preparation is included: sweeping, weed treatment, failed-section removal, base repair?
- 05Is drainage being addressed, or is the existing grade being reproduced?
- 06What is the cure time, and what does that mean for tenant access and lost parking during the work?
- 07What warranty covers cracking and what specifically voids it?
- 08Are traffic control, permits, and disposal included or excluded?
New analysis as it publishes.
Licence scope, code requirements, quote mechanics, and contract terms. Nothing else, and no vendor pitches.