Competitive Bid Coordination

A defensible bid process for Phoenix commercial roof replacement - written scope that every bidder prices the same thing, prequalification that filters out uninsured contractors, and bid leveling that shows your decision-makers what the spread actually means before you sign anything.

Most commercial roof bids in the Phoenix metro are not comparable. One contractor bids 60-mil TPO mechanically attached. Another bids 45-mil TPO adhered. A third bids a silicone coating over the existing membrane without disclosing that the existing membrane has open seams. The building owner gets three numbers, the spread is $180,000, and nobody can explain why - because each contractor wrote their own scope and nobody defined what was actually being bought.

We run bid coordination for building owners and property managers who want a process that produces defensible, comparable bids from contractors who have been verified to carry appropriate insurance and licensing under the Arizona Registrar of Contractors. Our role is on the owner's side. We write the scope. We manage the bid process. We level the bids. We make a written recommendation. We are not one of the bidders.

The Phoenix commercial roof market has real variation in contractor quality at every price point. An AZ ROC roofing license is necessary but not sufficient - it confirms a contractor can legally perform roofing work, not that they carry adequate general liability and workers' compensation insurance for the project size, not that they have manufacturer approval for NDL warranty work, and not that their crew is trained on the specific membrane system in the scope. Our prequalification process verifies all three before a contractor receives the invitation to bid.

How We Write the Scope That All Bidders Price

The bid scope document starts with a documented roof walk and, where the recover-vs-replace decision has not been resolved, a moisture-core pull at representative locations across the roof area. Phoenix's monsoon intrusion pattern means insulation saturation is common on buildings that have experienced drain blockage events - and a scope written without knowing the insulation condition will produce bids that either assume dry insulation (low cost, wrong) or assume full replacement (high cost, possibly wrong). We resolve that question before writing the scope.

The scope document specifies: membrane system and manufacturer (by performance specification, not sole-source to a single brand), membrane thickness, insulation type and R-value to current Arizona Energy Conservation Code (R-25 minimum for low-slope commercial under the 2018 AECC as adopted by the City of Phoenix), fastener pattern and density to IBC 2021/ASCE 7-22 wind-uplift requirements for Phoenix's climate zone, flashing details at all penetrations and parapets, drain specification and any required 65 initial solar reflectance per AECC Section C402.3), warranty path (20-year NDL or as specified), and closeout documentation requirements.

Every bidder prices the same scope. The only variables are their labor rate, their material costs, and their overhead - not the system they chose to spec to hit a price point. This is the structural requirement for a comparable bid process, and it does not happen when contractors write their own scopes.

Contractor Prequalification in the Phoenix Market

Our prequalification checklist: AZ ROC license in good standing with no unresolved complaints (verified directly with the Arizona Registrar of Contractors, not from the contractor's own documentation); current certificate of insurance with general liability at limits appropriate for the project size (minimum $2M per occurrence for projects above $500,000 contract value); workers' compensation coverage current with no lapse; manufacturer authorization letter for NDL warranty work on the specified system; and at least three verifiable references from Phoenix-area commercial projects of comparable scope within the last four years.

We call the references. We ask specific questions: Did the contractor complete within the contracted schedule? Did the manufacturer warranty inspection pass on the first review? Were there any ponding-related callbacks in the first monsoon season after installation? Were closeout documents delivered on time and complete? A contractor who cannot provide references that answer yes to all four questions does not belong on a bid list for a $750,000 roof replacement.

We also verify that the contractor has experience with work in Phoenix's climate calendar. Heat-welded TPO seams that fail within two monsoon seasons are almost always the product of crews welding past the noon cutoff during June-September. We ask when crews typically begin and end production during summer and what the contractor's protocol is for halting TPO welding when ambient or substrate temperatures exceed manufacturer thresholds. Contractors who cannot answer this specifically are flagged.

Bid Leveling and Award Recommendation

When bids come back, we produce a bid-leveling spreadsheet that makes every line item comparable - scope inclusions and exclusions side by side, unit-price breakdowns where the scope allowed alternates, clarifications requested and received in writing, and a schedule comparison. We also flag any bid that deviates from the specified scope without explicit notification in the bid: a contractor who bids 45-mil TPO when the scope specified 60-mil has not bid the project, they have bid something different, and that difference needs to be quantified before it enters the comparison.

The written recommendation to the building owner includes the leveled bid comparison, our assessment of each bidder's qualifications relative to the scope, any schedule or warranty-path differences that affect the decision, and a recommended award with a written rationale. The decision is the owner's. Our job is to produce the information that makes the decision defensible - to a board, to a capital committee, to an insurer, or to a future property manager reviewing the project file.

Frequently asked questions

Can you coordinate a bid for a Phoenix roof project that is already partially scoped?

Yes. If you already have a scope draft, we will review it for gaps and completeness before it goes to bidders. The most common gaps in owner-drafted scopes are missing insulation R-value specification, no cool-roof reflectivity requirement (required under the 2018 AECC for Phoenix re-roofing permits), and vague flashing details at penetrations and equipment curbs. We fill those gaps before the bid goes out.

How long does the bid coordination process take?

For a straightforward replacement project - one building, one roof area, dry insulation - we typically run a 3-week bid process: one week for scope finalization, one week for contractor prequalification, and one week for bid period with a hard bid date. Bid leveling and written recommendation take 3-5 business days after bids are received. Complex projects with multiple roof areas, phased scopes, or occupied-building sequencing requirements add time proportionally.

Do you have relationships with specific contractors that affect your recommendations?

No. We are not a general contractor and we do not have referral arrangements with any of the contractors we invite to bid. Our compensation comes from the owner. Our recommendation is based on the bid leveling and contractor qualification data, documented in writing. If a bidder we recommended turns out to have misrepresented their qualifications during prequalification, we document the discrepancy and revise the recommendation.

Does your scope include cool-roof code compliance documentation?

Yes. Every scope we write for Phoenix commercial buildings includes the AECC Section C402.3 reflectivity requirement and specifies that the winning contractor must include the ASTM E1918 reflectivity test report in the closeout package. For buildings above 50,000 sq ft in the City of Phoenix, the reflectivity test is required for certificate-of-occupancy documentation on the re-roofing permit.