Residential work is comfortable — you know the rhythms, you know what a fair markup looks like, and you can walk a homeowner through a proposal over a kitchen table. Commercial work operates by different rules entirely. The paperwork is heavier, the stakes are higher, and the mistakes that cost you money are often invisible until bid day.

This guide is for residential contractors ready to make the jump — or who’ve lost a commercial bid and want to understand why.

Residential vs. Commercial: What Actually Changes

Before talking numbers, you need to understand the structural differences.

Procurement process: Residential is mostly relationship-driven or platform-based (leads, referrals). Commercial is almost always competitive sealed bid or RFP-based, driven by timelines and formal scope packages.

Decision makers: On a residential job, the homeowner is the buyer and approver. On commercial, you may be dealing with a general contractor, owner’s rep, property management company, or government agency — each with their own approval chain.

Payment terms: Commercial projects often have 30-, 45-, or even 60-day net payment terms. Residential is typically progress payments or COD. Cash flow planning is critical.

Documentation: Expect submittals, RFIs, change order logs, certified payrolls (if prevailing wage applies), and daily reports. Residential paperwork is a fraction of this.

Understanding the Commercial Bid Package

When a commercial project goes out for bid, you’ll receive a bid package that typically includes:

Drawings and specifications (specs): Architectural, mechanical, electrical, plumbing, and structural drawings plus a specification book (CSI MasterFormat divisions)
Bid form: The official format in which you must submit your number
Instructions to bidders: Bonding requirements, submission deadlines, required attachments
Contract documents: AIA or EJCDC contract forms, or owner-drafted agreements
Addenda: Any modifications issued after initial package release

Read the Instructions to Bidders first, not last. Missing a bonding requirement or a required attachment disqualifies your bid before anyone sees your number.

Insurance Minimums Are Higher

Commercial projects have significantly higher insurance requirements than residential. Typical commercial thresholds:

General Liability: $1M per occurrence / $2M aggregate (sometimes $2M / $4M for larger projects)
Workers’ Compensation: Statutory limits
Umbrella/Excess: $1M–$5M depending on project size
Auto Liability: $1M CSL if you have company vehicles

Some owners also require being added as an Additional Insured on your GL policy. Your current residential insurance may not meet these thresholds — verify before you bid.

For a detailed look at the right coverage structure, see /resources/contractor-insurance-guide/.

Bonding Requirements: What You Need to Know

Most commercial projects over a certain dollar threshold require bonding. On public projects, bonding is almost always mandatory under the Miller Act (federal) or state equivalent (Texas has the Government Code Chapter 2253 bond requirements for public work over $25,000).

Bid bond: A guarantee (typically 5–10% of bid amount) that you’ll enter into the contract if selected. If you win and walk away, the owner can claim the bond. Usually issued by a surety company.

Performance bond: Guarantees you’ll complete the work per the contract. Typically 100% of contract value.

Payment bond: Guarantees you’ll pay your subcontractors and suppliers. Also typically 100% of contract value.

To get bonded, you’ll need to establish a relationship with a surety (through your insurance agent or a surety broker) and go through an underwriting process — they’ll review your financials, work history, and capacity. Start this process before you start bidding commercial, not after you’ve won a job.

Our full guide on how to get bonded as a contractor walks through exactly what surety underwriters look for.

Prevailing Wage on Public Jobs

If you’re bidding a federally funded project or a Texas state public works project, you may be required to pay prevailing wage rates under the Davis-Bacon Act or Texas prevailing wage law.

Prevailing wages are published by trade and locality. You must pay every worker on that job at least the published rate for their classification — even if your current wage structure is lower.

Failing to pay prevailing wage is a federal violation with severe penalties, including debarment from future public work. Before bidding any government or publicly funded project, determine whether Davis-Bacon applies and pull the current wage determination for your county.

The Associated General Contractors (AGC) is an excellent resource for understanding prevailing wage compliance and commercial bidding standards.

How to Structure a Competitive Commercial Bid

A competitive commercial bid is built on four pillars:

1. Complete Scope Takeoff

Go through every drawing and every spec section that applies to your trade. Commercial drawings are often issued in layers with addenda — make sure you’re working from the final issued-for-bid set. Use a takeoff sheet and reconcile every line item.

2. Accurate Labor Pricing

Commercial labor productivity rates differ from residential. Larger spaces, union vs. non-union considerations, more complex coordination with other trades — all affect your hours. If you haven’t done commercial before, use conservative productivity rates and build in coordination time.

Also factor in certified payroll compliance time if prevailing wage applies.

3. Overhead and Profit Markup

Commercial projects typically see tighter margins than residential because of more competition and more sophisticated buyers. Understand your fully loaded overhead rate (rent, insurance, admin, bonding cost, equipment) before setting your markup.

See our guide on bidding and estimating for contractors for a framework on markup calculations.

4. Subcontractor Quotes and Scope Gaps

If you’re a GC or prime bidding a multi-trade project, you’ll solicit sub quotes. Protect yourself by including scope gap and exclusion language in your bid form — list what is not included so there’s no ambiguity if you win.

Common Mistakes Residential Contractors Make on Commercial Bids

Underbidding overhead: Residential contractors often forget to price in bond premiums, certified payroll admin, and submittals/RFI management time. These can add 3–6% to your cost structure.

Skipping the spec book: The drawings show what gets built. The spec book shows what it’s built with — material grades, testing requirements, submittals, and warranties. Missing a spec requirement on materials can blow your budget after award.

Missing the bid bond deadline: Some owners require the bid bond to be submitted before a certain cutoff, separate from the bid itself. Missing it disqualifies your bid.

Not reading the contract terms: Commercial contracts often have onerous terms — no-damage-for-delay clauses, unilateral change order rights, back-charge rights. Read every page before signing.

Failing to clarify scope: If the drawings are ambiguous in your trade area, issue an RFI before bid day and ask for an addendum. Don’t assume and price based on an assumption — it will cost you.

Getting Your First Commercial Win

Your first commercial win often comes from a relationship with a GC who needs a reliable sub. Network with local GCs, attend AGC chapter events, and consider bidding as a subcontractor before bidding as a prime — it’s lower risk and builds your commercial reference list.

House Escort helps established contractors build a professional profile that includes commercial work history, which can help when GCs are vetting subs for bid packages. Create your contractor profile →

Frequently Asked Questions

How is a commercial bid different from a residential estimate? A commercial bid follows a formal procurement process with sealed bids, bonding requirements, specific insurance thresholds, and detailed spec compliance. Residential estimates are typically less formal and relationship-driven. Commercial bids also often require certified payrolls, submittals, and formal change order processes.

Do I need a contractor’s license to bid commercial work in Texas? Yes. Texas requires contractors to hold appropriate licenses for their trade (HVAC, plumbing, electrical). General contracting does not require a state license in Texas, but specialty trades do. Some local jurisdictions have additional requirements.

What is a bid bond and how do I get one? A bid bond is a guarantee issued by a surety that you’ll enter the contract if selected. You get one through a surety company, typically arranged through your insurance agent or a surety broker. You’ll need to be pre-qualified by the surety before bid day.

What is prevailing wage and when does it apply? Prevailing wage is a government-mandated minimum pay rate for workers on publicly funded projects. Federal projects use Davis-Bacon Act rates; Texas public works use state wage determinations. It applies when the project receives federal or state government funding above certain thresholds.

How do I calculate commercial overhead in my bid? Add up all fixed and variable business costs — rent, insurance, admin salaries, vehicle costs, bonding premiums, software — and divide by your annual billable hours. This gives you your overhead rate per hour, which you apply to each job before adding profit margin.

How to Bid Commercial Jobs as a Contractor