How to Read Three Whole-Home Renovation Bids That Are $180k Apart

A homeowner in Wallingford came to us this spring holding three bids for the same whole-home renovation — kitchen, two bathrooms, flooring throughout, and a rear addition tie-in on a 2,650 sq ft colonial — and the numbers ran from $312,000 to $492,000. According to our own estimating data across 31 whole-home projects we've bid or built in Delaware County and on the Main Line this year, a spread that size almost never means one contractor is gouging and another is a bargain. It means the three documents are pricing three different scopes, and the headline total is hiding that from the reader.

We asked to see all three bids, and with the homeowner's permission we're reproducing the real line items here — renamed Contractor A, B, and C — because this exact comparison is the single highest-stakes moment in choosing a builder, and no directory or aggregator site publishes an actual bid document. We found that walking through one real set of numbers teaches more than any generic checklist.

The Three Bids, Side by Side

All three contractors walked the same house, saw the same existing electrical panel, and quoted the same scope on paper: full kitchen gut, two bathroom renovations, refinished hardwood on the main floor, and tying the rear addition's roofline and HVAC into the existing structure. We tracked every line item the way we would on our own job file.

On the surface, Contractor A's $312,000 looks like the clear winner. Per our own line-by-line read, once permits, two dumpster pulls, temporary protection, and a final clean get added back in at market rates, Contractor A's real number climbs to roughly $351,000 — and that's before a single allowance gets raised to match what Contractor B and C already built in.

Allowances Are Where Most of the $180,500 Actually Lives

An allowance is a placeholder dollar figure for a finish the homeowner hasn't picked yet — cabinets, countertops, tile, fixtures. We've seen homeowners treat the allowance line as if it were a firm price. It isn't. It's a floor, and the gap between a $28,000 kitchen allowance and a $58,000 kitchen allowance is almost always a gap in cabinet grade, countertop material, and appliance tier, not a gap in labor.

In this bid set, Contractor A's $28,000 kitchen allowance covers stock cabinets, laminate counters, and builder-grade appliances. Contractor C's $58,000 allowance covers semi-custom cabinetry, quartz counters, and a mid-tier appliance package. If the homeowner actually wants the Contractor C kitchen, Contractor A's number will climb by close to $30,000 in change orders once cabinets get selected — and that change order will be priced at whatever rate is buried in Contractor A's contract, not at the original bid rate. We walk through cabinet grade and its real cost impact in more depth in our home remodeling cost guide for Delaware County.

The bathroom and flooring allowances tell the same story at smaller scale. A $9/sq ft flooring allowance buys laminate or basic engineered hardwood. A $19/sq ft allowance buys a premium engineered or solid hardwood product. Neither number is wrong on its own — they're pricing different products. The mistake is comparing $312,000 to $492,000 without first lining every allowance up against the same target finish level.

What Gets Silently Excluded From a Low Bid

We found that the four items most often missing from the lower of three bids are the same four every time: permits, dumpster and debris removal, temporary protection of finished surfaces and HVAC, and the final clean. None of these show up as a line item that reads "missing" — they simply aren't on the page, and a homeowner comparing totals has no way to know that until the change order arrives mid-project.

1. Permits. On a whole-home project in Delaware County, permit fees and the time to pull them run $2,500–$6,000 depending on scope and whether a hearing is required. If the homeowner is listed as pulling the permit, that cost and that liability sit with the homeowner, not the contractor.
2. Dumpster and debris removal. A whole-home gut generates multiple 20-yard dumpster loads. At roughly $550–$650 per pull in our market, two to four pulls is $1,100–$2,600 that either shows up as a line item or shows up as a surprise invoice at close-out.
3. Temporary protection. Floor protection, dust barriers, and HVAC return protection on a whole-home job we price at $1,800–$3,500. Skipping it doesn't make the job cheaper — it moves the cost of refinishing a scratched floor or cleaning drywall dust out of the ductwork onto the homeowner after the fact.
4. Final clean. A professional post-construction clean on a house this size runs $800–$1,500. "Broom clean" and "professional deep clean" are not the same service, and the difference is noticeable the day the homeowner moves back in.

None of these four items individually explains a $180,500 spread. Stacked together across a whole-home scope, they routinely account for $6,000–$12,000 of an apparent price gap that has nothing to do with the quality of the work.

Fixed-Price, Cost-Plus, and Time-and-Materials — and How Each One Prices a Change Order

The three bids above use three different pricing structures, and that distinction matters more than the headline number once a single change order gets added — and on a whole-home project, at least one always does.

• Fixed-price. Contractor A's $312,000 is a single number for the entire defined scope. The upside is budget certainty; the risk is what's excluded from "the defined scope," since every exclusion becomes a change order priced at whatever rate schedule is buried in the fine print — often marked up 20–35% over the contractor's cost.
• Fixed-price with allowances. Contractor B's structure fixes the labor and most materials but leaves finish-level allowances open. This is the most common structure we write, because it gives real budget certainty on the parts that don't change while leaving room for the homeowner to pick finishes without renegotiating the whole contract.
• Cost-plus. Contractor C's 15% fee on top of actual costs means the homeowner sees real invoices for labor and materials, plus a transparent margin. It tends to run higher on paper because nothing is padded into a lump sum to cover unknowns — the contingency is explicit instead of hidden. It also means the final number isn't locked until the job is substantially complete.

The practical test we tell every client to run: ask each contractor, in writing, exactly how a change order gets priced under their contract — a flat markup percentage, a separate labor-and-materials invoice, or a pre-agreed unit rate. If the contract doesn't say, that's the first thing to get in writing before signing, per the standard construction-contract guidance from the Consumer Financial Protection Bureau on home improvement financing and contract terms.

The $40,000 Contingency Line That Changes Everything

Contractor A's bid has no contingency line. Contractor C's has $40,000, an 8% buffer for the unknowns that show up once walls open on a house built before modern code — old wiring, undersized framing, water damage behind a wall, a plumbing stack that doesn't match the original drawings. In our experience across whole-home renovations on homes built before 1970, something in this category turns up on close to two out of every three jobs.

A bid with no contingency line isn't a bid with no risk. It's a bid where that risk becomes a change order the moment it's discovered, typically priced at whatever markup the fixed-price contract allows, with no cap and often with less negotiating leverage than the homeowner had before signing. A bid with an explicit 5–10% contingency line, by contrast, tells the homeowner up front what the realistic worst case looks like, and most contractors we've seen refund an unused contingency at project close if the house behaves. When comparing Contractor A's $312,000 against Contractor C's $492,000, roughly $40,000 of that $180,000 gap is Contractor C simply pricing a risk that Contractor A left unpriced, not unaccounted for.

Pennsylvania Specifics: Licensing, Deposits, and What a Contract Must Say

Before comparing a single dollar figure, confirm the basics the Commonwealth requires, since a bid from an unregistered contractor isn't a bid worth comparing at any price.

• HICPA registration. Under Pennsylvania's Home Improvement Consumer Protection Act, any contractor performing more than $5,000 of home improvement work per year must be registered with the Pennsylvania Attorney General's Office. Verify any contractor's registration number directly on the Pennsylvania Office of Attorney General's home improvement contractor lookup before signing anything. ProBrothers Construction carries HIC# 195591 — check any bid you've received the same way.
• Deposit limits. HICPA caps the deposit a contractor can legally collect before work begins at one-third of the total contract price, or the actual cost of custom-ordered materials, whichever applies. A contractor asking for half or more up front is already outside the statute.
• What the contract must contain. To be enforceable under HICPA, a home improvement contract needs the contractor's name, address, and HIC registration number; the total price or the method for calculating it; a description of the work and materials; approximate start and completion dates; and the homeowner's three-day right to cancel. A bid missing any of these isn't yet a legal contract, whatever number is on it.

We've seen homeowners compare three bids on price alone and only discover during the walk-through that the "lowest" one came from a contractor who wasn't registered at all — at which point the comparison was never actually three-way.

A One-Page Worksheet for Comparing Your Own Bids

We built this worksheet from the exact categories that separated the three bids above. Copy it into a spreadsheet and fill one column per contractor before comparing a single total.

When our Wallingford client ran all three bids through this worksheet, the adjusted totals landed at $351,000 (Contractor A), $398,500 (Contractor B, unchanged since nothing was missing), and $446,000 (Contractor C, once the unused portion of an 8% contingency was treated as a likely partial refund). A $180,500 headline spread became roughly a $95,000 real spread — still meaningful, but driven almost entirely by finish-level allowances and risk pricing, not by one contractor being dramatically cheaper for the same work.

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