Guide
How to compare outdoor-living proposals apples-to-apples
Two proposals that look similar on price can describe very different projects. Before comparing totals, compare written scope across the same categories. A $42,000 patio and a $58,000 patio are often the same square footage — the difference is what happens under the pavers, at the edges, and after year one.
The 11 categories every proposal should make clear
- Scope. Services, quantities, areas, materials, manufacturers.
- Exclusions. What is explicitly NOT included — written, not implied.
- Assumptions. Site conditions, access, soil, utilities, weather.
- Site preparation. Demo, haul-off, excavation, grading, drainage, base, compaction.
- Utilities. Electrical, gas, plumbing, low voltage, irrigation, sleeves, conduit.
- Permits / HOA / Engineering. Who handles each — and whose fees are included.
- Timeline. Preconstruction, design, engineering, permits, lead times, inspections.
- Payment terms. Deposit, milestones, final payment, change-order timing.
- Change orders. Written process, pricing method, schedule impact, approval.
- Warranty. Workmanship, manufacturer, exclusions, transferability, support process.
- Customer responsibilities. Access, HOA docs, selections, pets, removals, decisions.
The 8-step comparison method
Follow this sequence in order. Skipping to price before step 7 is the single most common way homeowners overpay by 20% while thinking they saved money.
- Normalize the scope on one page. Rewrite every bidder's scope into the same 11 categories. Do not compare PDFs side-by-side — bidders format differently on purpose. A single normalized worksheet is the only fair comparison.
- Verify materials and manufacturers by model number. 'Premium travertine' means nothing without a supplier and product line. Same for pool equipment (pump, heater, sanitation), pavers, glass fencing hardware, and LED fixtures. Model numbers travel; adjectives don't.
- Confirm site prep, base depth, and drainage in writing. ABC depth by scope (patios 2–3", driveways 4–6"), compaction lifts, bedding sand, drainage destination, and pitch percentage — all belong in the proposal, not the sales conversation.
- Reconcile permits, HOA, and engineering ownership. Every bidder should either include permit and HOA coordination in the price or exclude it clearly. If it's ambiguous, assume it will land on you at the worst moment.
- Line up payment schedules and change-order rules. Milestone-based draws with clearly defined deliverables beat calendar-based invoicing. Change orders should be priced before work, in writing, with a schedule impact stated.
- Compare warranty terms — length, transfer, and exclusions. Workmanship term, manufacturer warranty pass-through, transferability on home sale, and the specific exclusions list all matter more than the headline year count.
- Add owner-shouldered costs back into each total. Permits you'll pull, materials you'll supply, decisions you'll make on-site, disposal you'll arrange — quantify and add them to that bidder's total so you're comparing full delivered cost, not proposal cost.
- Then, and only then, compare price. The bidder whose total is highest after steps 1–7 often turns out to be the lowest actual cost. If the ranking flipped, the exercise worked.
The normalization worksheet
Copy this table into a document and fill one column per bidder. When every row is populated for every bidder, comparison becomes arithmetic instead of gut feel.
| Row to fill for each bidder | Why it matters |
|---|---|
| Square footage / linear footage per scope | Confirms you're pricing the same area. |
| Material line + manufacturer + model | Removes 'premium' as a hiding place. |
| Base spec (depth, lifts, sand, joint sand) | Where hidden cost cuts live. |
| Drainage plan + destination + pitch | The single most common omission in vague proposals. |
| Permit + HOA + engineering ownership | Ambiguity here always costs the homeowner. |
| Timeline windows (pre-con → close-out) | A price without a schedule is half a proposal. |
| Payment schedule (deposit + milestones) | Structure matters more than total number. |
| Change-order pricing method | Cost-plus, unit rate, or lump sum — get it in writing. |
| Warranty (workmanship + manufacturer) | Length, transfer, exclusions. |
| Owner responsibilities | Every one of these is a hidden cost line. |
Worked example: two patio proposals, same square footage
Here's the same 600 sq ft paver patio scoped two ways. Column A is the vague version. Column B is what an install spec should actually read like.
| Line item | Proposal A (vague) | Proposal B (specific) |
|---|---|---|
| Base excavation | 'Prep as needed' | 6" over-dig, haul-off 14 cy, geotextile fabric under ABC |
| Paver base | 'Compacted base' | 4" ABC in 2" lifts, plate-compacted, 1" bedding sand |
| Joint sand | 'Sand joints' | Polymeric joint sand (Techniseal HP NextGel), power-wash + reactivate |
| Drainage | Not mentioned | 2 area drains, 4" SDR-35 to daylight, 1% pitch to grade |
| Permits | 'Owner to obtain' | AE pulls city permit, coordinates inspection, provides closeout docs |
| Warranty | '1 year' | 5-year workmanship on install, manufacturer warranty on pavers passed through |
Proposal A can be cheaper because the missing scope is either not being done — or will come back as a change order in month three. Proposal B is more expensive because it describes the whole job.
Why one proposal may be lower
A lower total often reflects a smaller project, lower-spec materials, or owner-shouldered responsibilities. Common causes:
- Missing demolition, haul-off, or site protection
- Missing drainage, grading, or base preparation
- Missing engineering, permit, or HOA coordination
- Lower-grade product or unspecified manufacturer
- Limited or unclear warranty
- Excluded utility work
- Specialty scope routed through a separate vendor
- Thinner base — quarter minus instead of ABC (which fails under vehicle traffic)
- Regular sand instead of polymeric joint sand (weeds, ant tunnels, joint blowout year one)
None of these are automatically bad — but they should be explicit and acknowledged before you compare totals.
Seven questions that surface hidden differences
Ask every bidder these. The answers, side by side, tell you which proposal is actually the lowest.
- What ABC depth are you installing under the pavers, and how many compaction lifts?
- Is polymeric joint sand included, and which product line?
- Where does surface water go — daylight, drywell, area drain? Who calculates the pitch?
- Who pulls the permit, coordinates inspections, and handles HOA submittals?
- What's the written workmanship warranty term, and what voids it?
- How are change orders priced and approved — cost-plus, unit rate, lump sum?
- Which line items are self-performed vs subcontracted, and are those subs licensed for their scope?
Red flags on any proposal
- "Call for pricing." A licensed contractor can provide a written unit rate or lump sum.
- Verbal-only warranty. If it isn't written, it isn't enforceable.
- Full payment before mobilization. Arizona ROC bond claims are harder when there's nothing left to withhold.
- No exclusions list. Silence on exclusions is not "everything is included" — it's "we'll argue about it later."
- Change orders priced after work is done. Price and scope should be approved in writing before the work happens.
Frequently asked questions
How many outdoor-living proposals should I get?
Two to three from vetted, licensed contractors is the sweet spot. Beyond that, the extra bids rarely add signal — you get faster to a decision by comparing scope carefully than by adding a fifth bidder.
Why is the cheapest proposal usually the most expensive?
Lower totals typically reflect missing scope: thinner base, no drainage, no permit coordination, weaker warranty. Those items don't disappear — they show up as change orders, callbacks, or year-two failures. Compare scope first, price last.
What's a normal deposit for an outdoor-living project in Arizona?
A modest deposit tied to design or mobilization is standard. Aggressive front-loading (25%+ before any work) shifts risk to the homeowner and weakens your recourse. Prefer schedules with milestone-based draws tied to visible progress.
Should the proposal name specific paver and equipment brands?
Yes. A written spec should list the paver line, color, and thickness; the base material (ABC, not quarter minus); joint sand product; pool equipment brand and model; and lighting fixture manufacturer. Vague product language hides substitutions.
What if two proposals use different base materials?
That's a red flag. Under pavers, ABC is the correct base — 2 to 3 inches for patios and walkways, 4 to 6 inches for driveways, with a 1-inch bedding sand layer. Quarter minus does not compact the same way and fails under load; it belongs under turf, not pavers.
How long should a workmanship warranty be?
Meaningful workmanship warranties on hardscape run 3 to 5 years or more, transferable on sale. A one-year warranty is a red flag — most install defects (settling, joint failure, drainage error) surface between years one and three.
Use the tool
The Proposal Scope Scorecard walks you through these categories on a real proposal and flags items that are missing or unclear. Pair it with the License Check for full due diligence, and the Arizona license guide to understand which classifications should appear on each scope.
Educational planning guidance only. Not legal advice, engineering advice, code determinations, or a hiring recommendation.