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Commercial flatwork bids

What a commercial flatwork bid should say

A commercial bid for a parking lot, drive lane, dumpster pad, sidewalk or loading area should define the scope panel by panel, give thickness and steel per area, say how new panels are doweled into old, lay out joints, address ADA slopes and routes, state phasing and hours, and include the certificate of insurance and lien release terms.

  • Line-item spec, not a lump sumThickness, steel, base, joints and finish each on their own line.
  • One quote, one crewYour request goes to a single vetted, insured DFW contractor, not a list.
  • Compare apples to applesUse our checklist to hold every bid to the same spec before you pick.
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Spec on every line: thickness, steel, base, joints
Insured contractor, certificate on request
Sources cited: city standards, PCA, ACI, Texas AG
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Updated November 10, 2026

Price per square foot without that scope is not comparable.

Scope: which panels, which areas

The single biggest reason commercial bids differ is that each bidder decided for themselves what was in scope. Ask for a marked-up plan or aerial with every panel to be replaced, every curb to be repaired and every pad to be poured. Two bids with the same marked plan can be compared; two bids with the same square footage usually cannot.

Thickness and steel per area

A drive lane, a dumpster pad and a sidewalk are different sections. The bid should list thickness and steel for each, and whether the dumpster pad and truck apron are thicker. If the property has civil drawings, the bid should match them; if not, ask the bidder to state the spec they are pricing.

Dowels, joints and tying into existing concrete

Replacement panels should be doweled into the panels around them, and joint spacing should follow the existing grid. The Portland Cement Association's guidance caps joint spacing on thick, heavily loaded slabs at about 15 feet to preserve aggregate interlock, which is a good check against a bid that shows panels much larger than that.

Source: Portland Cement Association, FAQ: joints, what type are used and where

ADA and accessible routes

Ramps, landings, accessible stalls and the route to the door have slope limits. If the work touches any of those, the bid should say the new work meets the current standard, and striping should be in or out of scope explicitly. Verify the current requirements for your property with the city or an accessibility specialist.

Phasing, hours and keeping the lot open

The bid should state how many phases, which areas close when, whether work happens at night or on weekends, and how customers and deliveries get through. A cheaper bid that closes your lot for a week is not cheaper.

Paper: insurance, lien releases, permits

Ask for the certificate of insurance before work starts, lien releases with each payment, and a statement of which permits the bidder pulls. The Texas Attorney General's consumer guidance warns that an owner can end up responsible when a contractor does not pay subcontractors or suppliers, which is exactly what lien releases protect against.

Source: Texas Attorney General, how to avoid home improvement scams

Common questions

Why does one commercial bid say per square foot and another per panel?

Different habits. Ask both to price the same marked-up plan so the totals are comparable.

Can work be done without closing the lot?

Usually, in phases and often at night. The bid should spell out the phasing.

Do I need a civil engineer for a panel replacement program?

Not usually for like-for-like replacement. New paving, grading changes or drainage changes typically do need one.

What about asphalt?

If the lot is asphalt, the right fix may be asphalt or a concrete section. Ask the bidder to say which and why.

Other bid guides

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Residential and commercial, in all eleven DFW counties. No price on this site, because the lot decides the price.

Request a written quote

Tell us the job

One vetted, insured North Texas contractor will call or text within one business day to set a time to look at it. You get a written quote with the full spec.

Written spec on every quote · No obligation

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