Every patio quote is answering the same five questions, whether the contractor says so or not: how big, how hard to reach, what finish, what's under the grass today, and how much steel and base work it takes to keep the slab flat through Oklahoma's clay-soil seasons.
That's why two bids for "the same patio" can land far apart. One includes four inches of compacted base, reinforcement, and saw-cut control joints. The other is concrete poured on dirt. They cost different amounts because they are different products — one of them just doesn't reveal that until year three.
The five price drivers
Size sets the floor — materials and crew time scale with square footage, though small pours carry a minimum (the truck, the crew, and the setup cost the same whether it's 100 or 400 square feet).
Access is the multiplier people don't expect. A backyard a wheelbarrow can reach through a 36-inch gate takes more labor than one a truck can chute directly — and hand-carried concrete is priced as the labor it is.
Finish is your biggest style lever: broom finish is the durable, economical standard; stamped and colored concrete adds material, labor, and sealing, and typically runs meaningfully more per square foot.
Existing conditions matter: tear-out of an old slab, deep pea gravel, roots, or bad drainage all show up in honest bids as line items — and in dishonest ones as change orders later.
Base and reinforcement are the part you can't see and shouldn't skip. It's a modest share of the bid and most of the reason the patio is still flat in ten years.
How to compare bids
Ask every bidder the same three questions: How deep do you excavate and what goes back in before concrete? What reinforcement is in the slab? Where will the control joints go? If the answers are vague, the low number isn't a bargain — it's a slab with a short life expectancy.
We quote after a free site walk, itemized, with every one of those answers in writing. That's the only way a patio bid means anything.