What's the best way to verify the landlord's contractor bid isn't padded?

Why the landlord's contractor is not on your side

The structural problem behind every padded tenant-improvement (TI) bid is a simple misalignment of interest: the landlord's contractor was hired by the landlord, is paid by the landlord, and often expects repeat work from the landlord across the whole building. You are a one-time counterparty. That relationship shapes the bid before a single number is written. Padding is rarely a crude lie; it is a set of defensible-looking defaults — premium specifications, generous allowances, a fat general-conditions line, a fee applied on top of already-marked-up subcontractor quotes — each of which the contractor can justify individually while the sum quietly inflates.

Understanding this changes how you read the bid. You are not looking for an obvious error; you are looking for a pattern of choices that all lean in the same direction. If every judgment call in the bid — the grade of flooring, the size of the HVAC unit, the scope of demolition, the percentage overhead — happens to favor the higher number, that consistency is itself evidence. An honest bid has some items priced aggressively and some conservatively. A padded bid is uniformly rich. Your job is to introduce a second set of eyes and a second set of numbers so that the contractor's defaults are tested against a neutral reference instead of accepted at face value. Everything that follows is a mechanism for doing exactly that: making the pricing transparent, giving yourself an independent benchmark, and building leverage into the lease and the contract so the landlord's side has a reason to negotiate rather than dictate.

The line-item bid is your first and best weapon

A lump-sum bid with a single number is a red flag, not because the total is necessarily wrong, but because it gives you zero visibility into where the money goes. Insist on a breakdown organized the way contractors themselves organize estimates — a CSI MasterFormat structure that separates demolition, rough carpentry, drywall and framing, the mechanical-electrical-plumbing (MEP) trades, finishes, and closeout. Each line should carry three things: the quantity (say, square feet of drywall or linear feet of conduit), the unit price (per square foot, per linear foot), and the extended total. A contractor who refuses to provide unit pricing is almost always hiding markup, because unit pricing is exactly what makes markup visible.

Once you hold that breakdown, the next move is comparison. Cross-check the unit prices against RSMeans, the construction-cost database that general contractors use to build their own bids and that is available through many public libraries and by short-term subscription, or against the National Construction Estimator. If the landlord's contractor is charging materially more per square foot for drywall installation than the published local average, you have located padding with precision — you can point to the line, the quantity, and the delta. Watch specifically for double-counting: a "mobilization" line and a separate "general conditions" line that both bundle the same setup costs, or a demolition line that reappears folded into a finishes line. These overlaps are the most common and most defensible-sounding pads, because each line has a legitimate name. The unit-price view is what exposes them, because it forces every cost to be attached to a measurable quantity rather than a vague category.

Line-item transparency also disciplines the conversation going forward. When you agree to a scope, you agree to specific quantities at specific rates, which means change orders can be priced against the same table instead of invented mid-project. That single document — the itemized bid with unit prices — is the spine of every other verification step. Without it, you are negotiating a mood; with it, you are negotiating math.

Hire your own independent cost estimator

The highest-leverage move available to a commercial tenant is spending a modest flat fee on a third-party cost estimator — a professional who does nothing all day but price construction scopes. Hand them the landlord's bid and the architectural drawings, and they will produce an independent estimate, line by line, from a neutral starting point. This is not a hostile act or a conflict; it is ordinary due diligence, the construction equivalent of a home inspection before purchase. Tenants who skip it routinely overpay on buildouts for the simple reason that they have no independent reference point and are therefore forced to trust the only number in the room.

A good estimator does more than re-price the visible lines. They flag inflated unit rates, they identify scope items that do not belong in the job at all, and they catch soft costs — excessive design fees, redundant permit charges, padded contingencies — that a tenant reading the bid cold would never question. The estimator's report becomes a negotiating instrument you can put on the table without emotion: "Your contractor's bid is X; my independent estimate is Y. Let's reconcile the difference line by line." A landlord who negotiates against that number is behaving normally. A landlord who refuses to engage with an independent estimate at all is telling you plainly that the gap between X and Y is the point. Relative to a buildout that runs into five or six figures, the estimator's fee is trivial, and it routinely pays for itself many times over on a single project.

Audit the scope for gold-plating

Not all padding lives in the prices. A great deal of it hides in the scope — in specifying premium materials, oversized equipment, or unnecessary demolition that photographs well on paper and adds nothing to your actual operation. The classic examples are a premium lighting package where standard LED troffers would perform identically, or an HVAC replacement when the existing system has years of service life remaining and adequate capacity for your load. The remedy is to match the scope to your real use. A law office does not need restaurant-grade kitchen exhaust; a small retail store does not need a data center's cooling redundancy; a quiet professional suite rarely needs the electrical service a commercial kitchen would.

Walk the bid line by line with someone on your side — your architect, a tenant representative, or a trusted independent project manager — and mark every item as required, nice-to-have, or unnecessary. Flag every line that reads "upgrade," "premium," or "architectural feature," and for each one ask the contractor a single question: "What is the standard, code-compliant alternative, and what does it cost?" If they cannot name a cheaper alternative that still meets code and your needs, the premium is padding. Apply the same scrutiny to demolition — a bid that includes tearing out walls that do not move, or replacing wiring and panels that function perfectly, is inflating the job with work you never asked for.

Allowances deserve special attention here. A large "lighting allowance" or "flooring allowance" with no fixed specification is effectively a blank check: if you later select cheaper fixtures, the contractor can pocket the difference unless the contract says the unused allowance returns to you. Pin down each allowance to a specific product and specification wherever possible, and write in language that any underrun credits back to the tenant. Bringing in an independent architect or engineer for even a brief scope review costs little against the savings from eliminating work that should never have been in the bid.

The general-conditions and soft-cost trap

General conditions is the single line where padding hides most often, because it is genuinely legitimate and genuinely hard to verify. It covers the contractor's on-site overhead: the site trailer, temporary utilities, dumpsters and porta-potties, permits, cleanup, and the supervision of the project manager or superintendent. Because every item on that list is real, an inflated total can hide in plain sight. The defense is to demand a full breakdown — every general-conditions sub-item with its own dollar amount and, for labor, its own rate. A site superintendent should be priced at the prevailing local rate for that role, not at an executive fee, and you should be able to see it stated that way. If the bid shows a project-management fee as a percentage of the job *and* a separate full-time superintendent line on what is a small buildout, that is double-charging for supervision.

Then look at the fee structure itself, which is where the most systematic padding lives. The general contractor's overhead and profit is normally a percentage of the direct cost of the work, and combined overhead and profit for a fit-out commonly falls in a roughly 10–20% range depending on market and project size. Two abuses recur. The first is fee-on-fee: the contractor marks up each subcontractor's quote and then charges its overhead-and-profit percentage on top of the already-marked-up number, so you pay inflated overhead on every sub line. The second is charging the fee against materials you source and pay for yourself — specialty lighting, flooring, fixtures — which is pure double-dipping, since the contractor bears no cost or risk on materials you buy directly. Ask two blunt questions: "What is the GC fee percentage, and exactly what base is it applied to?" Insist the fee attach only to the contractor's own direct work, not to owner-furnished materials, and cap it.

Two more soft-cost traps round out the pattern. A separate construction-management fee — the landlord charging to manage the contractor who is already charging you a management fee — is a second layer of markup that should be questioned and, ideally, removed or capped. And extended general conditions can bite you at the end: if the project runs late because of the landlord's own delays, such as slow permit approvals or a slow-to-respond landlord decision, the contractor may try to bill you for extra weeks of trailer rental and supervision. Negotiate a cap on general conditions as a percentage of direct work, tie it to a firm schedule, and make clear that delays caused by the landlord's side do not accrue to your account.

Competition, contract structure, and the post-completion audit

Nothing exposes padding faster than competition, so the most valuable protection is to negotiate a competitive-bid provision into the lease or work letter before you sign. This clause lets you solicit bids from your own pre-approved, qualified contractors for the same buildout scope, and it requires the landlord's contractor to either match the lowest qualified bid or step aside and let you use the cheaper contractor. It is standard in well-negotiated TI agreements. If the landlord resists, the reason is worth hearing: "we have a preferred contractor relationship" often means the landlord receives a volume discount or a referral benefit that is not being passed through to you. Even without a lease clause, you can informally solicit independent bids from local contractors working off the same drawings, then present the lowest to the landlord: "My contractor can do this scope for X — match it or I use them." A landlord confident the bid is fair will match; one who is padding will stall or retreat to vague claims of "better quality," which is frequently code for a markup.

Structure the contract to lock the win in place. A fixed-price, not-to-exceed contract with a clear allowance schedule caps your exposure and puts the risk of cost overruns on the contractor rather than on you, unlike an open-ended cost-plus arrangement. Where allowances remain, specify that any underrun credits back to you rather than converting into contractor profit. And regardless of pricing model, negotiate an audit right — a cost-plus or open-book audit clause that lets your accountant or a construction auditor review invoices, subcontractor quotes, material receipts, and labor records after completion. This right must be written in explicitly; do not assume you have it. A workable clause reads roughly: "Tenant reserves the right to audit all contractor invoices and subcontractor quotes within twelve months of completion; any overcharge identified shall be refunded with interest." If the contractor billed a large sum for custom millwork but the sub's invoice shows far less, the audit recovers the difference. The combination — competition to set a fair price, a fixed not-to-exceed structure to hold it, and an audit right to verify it after the fact — closes the loop from bid to final invoice and leaves padding nowhere to hide.

Related questions

How much can I typically save by hiring an independent estimator?

It varies by project, but the estimator's flat fee is small relative to a buildout, and catching even one inflated line — an oversized HVAC unit, a padded general-conditions total, or a premium finish downgraded to standard — commonly recovers many times the estimator's cost. Treat it as insurance with a positive expected return.

What should combined overhead and profit be on a fit-out?

Combined GC overhead and profit commonly runs in a roughly 10–20% range, depending on market, project size, and complexity. Ask for the percentage explicitly, confirm it applies only to the contractor's direct work, and make sure it is not layered on top of already-marked-up subcontractor quotes.

Can the landlord force me to use their contractor?

Sometimes, if the lease says so, but it is negotiable. Push for a competitive-bid provision or a pre-approved contractor list before signing. If the landlord insists on their contractor, condition it on matching competitive bids and on your right to audit invoices after completion.

What's the single most-padded line item?

General conditions and open allowances are the biggest offenders. General conditions can be inflated with duplicate supervision charges, and an unspecified allowance functions as a blank check the contractor keeps if you spend less. Itemize both and require unused allowance to credit back to you.

FAQ

Can I just use my own contractor instead of the landlord's? Often yes, if the lease allows it — and you should negotiate that right upfront. Many landlords prefer their own contractor to control quality and schedule, but you can push back with a pre-approved contractor list or a clause requiring the landlord's contractor to match competitive bids for the identical scope.

What if the landlord says their contractor is the only one who knows the building? That is usually a weak argument. Any licensed contractor can work in a commercial building after a brief site walk. If the building genuinely has unusual systems, ask the landlord to host a pre-bid site tour for all bidders, which levels the field and removes the excuse.

How do I know if a unit price is reasonable without being an expert? Use RSMeans, available by short-term subscription or through many public libraries, or ask a local trade association such as the Associated General Contractors for typical rates in your market. You can also call local subcontractors for a ballpark on a specific line — drywall, flooring, electrical — as a sanity check.

Is padding always intentional? Not always. Some is deliberate hidden markup, but much is systemic — the contractor defaults to premium specs or national averages that do not reflect your local market or your actual needs. Line-item review paired with an independent estimate catches both the intentional and the accidental kind.

What's the most common padding I should watch for? Beyond general conditions and allowances, watch for fee-on-fee (overhead charged on top of marked-up subcontractor quotes) and fees applied to materials you buy yourself. Both quietly inflate every dollar. Require the fee to attach only to the contractor's own direct work and cap the percentage.

Can I negotiate the right to audit after the buildout is complete? Yes, and you should. Add language to the work letter or construction contract reserving your right to audit all contractor invoices and subcontractor quotes within twelve months of completion, with any overcharges refunded plus interest. Written explicitly, this right recovers padding the earlier steps missed.

Sources

• https://www.rsmeans.com/
• https://www.craftsman-book.com/
• https://www.iccsafe.org/
• https://www.agc.org/
• https://www.boma.org/
• https://www.sba.gov/business-guide/manage-your-business/buy-lease-commercial-space
• https://www.aia.org/resources/6076-tenant-improvement-guidelines
• https://www.csiresources.org/standards/masterformat

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