Construction & Contractor Insurance: What You Actually Need and What You Can Skip

If you're a contractor, you've felt this: you win the bid, you're ready to mobilize, and then the GC's office sends over a 14-page subcontract with insurance requirements that read like they were written by a lawyer who's never held a tape measure. Additional insured. Waiver of subrogation. Per-project aggregate. Primary and non-contributory. And they need the certificate by Friday or you're off the job.

Insurance is the cost of doing business in construction. But most contractors are either carrying too little coverage and getting locked out of jobs, or carrying too much of the wrong coverage and overpaying by thousands. The difference usually comes down to whether someone actually explained the requirements or just sold you a policy.

This guide covers what you need, why you need it, and how to structure your program so you can bid confidently and not get surprised at renewal.

The Seven Policies Every Contractor Should Know About

Not every contractor needs all seven. A solo handyman has different needs than a 50-person framing crew. But you should understand each one, because the GC or project owner on your next job might require any of them.

1. General liability (GL)

This is the foundation. General liability covers bodily injury and property damage caused by your work. A pedestrian trips over your materials on a sidewalk. Your crew accidentally cuts a water main. A ceiling you installed collapses six months after the job is done. GL responds to all of these.

Most subcontractor agreements require $1,000,000 per occurrence and $2,000,000 general aggregate. Some large commercial projects require a per-project aggregate endorsement, which resets your aggregate limit for each job instead of sharing it across all your projects in a policy year. If you're working multiple jobsites simultaneously, this endorsement matters.

2. Workers' compensation

If you have employees, you almost certainly need workers' comp. In most states it's required by law once you have even one employee. It covers medical expenses and lost wages when a worker is injured on the job. In construction, where falls, tool injuries, and repetitive strain are common, this isn't optional coverage — it's a legal and practical necessity.

Even if you're a sole proprietor with no employees, many GCs require you to either carry workers' comp or sign a waiver acknowledging that you're excluded. Without it, the GC's own policy may have to cover your injury on their jobsite — which is exactly why they require it.

3. Commercial auto

If your business owns vehicles — trucks, vans, trailers — you need a commercial auto policy. Your personal auto insurance does not cover vehicles used for business purposes, and it definitely doesn't cover a work truck loaded with $40,000 in tools and materials.

Commercial auto covers liability (damage you cause to others) and physical damage (damage to your own vehicles). Most subcontractor agreements require $1,000,000 in combined single limit. If you use hired or non-owned vehicles (renting a truck for a project, or an employee using their personal vehicle for work errands), make sure your policy includes hired and non-owned auto coverage.

4. Builders risk

Builders risk covers the structure itself while it's under construction. If a fire, storm, theft, or vandalism damages the building before it's complete, builders risk pays to repair or rebuild. It typically covers the building, materials, and fixtures from groundbreaking to substantial completion.

On most projects, the project owner or GC carries the builders risk policy. But on some residential and smaller commercial jobs, the GC may require the sub to carry it — or you may be building a project where you're both the contractor and the owner. If you're doing ground-up construction, make sure someone has builders risk in place before the first pour.

5. Inland marine

This covers your tools, equipment, and materials while they're in transit or stored at a jobsite. Your general liability policy does not cover your own property — it covers damage you cause to other people's property. If someone steals $30,000 in tools from your truck overnight, or a piece of equipment is damaged in transit, inland marine is the policy that responds.

Inland marine can be written as a standalone policy or as a floater on your GL or property policy. For contractors with significant equipment investments — especially specialty trades like electricians, plumbers, and HVAC contractors — this is essential coverage that's often overlooked.

6. Surety bonds

A surety bond isn't insurance in the traditional sense — it's a three-party agreement between you (the principal), the project owner (the obligee), and the surety company (the guarantor). If you fail to complete the work or don't pay your subcontractors and suppliers, the surety steps in.

There are three types that matter in construction:

• Bid bond — guarantees you'll enter into the contract if awarded the bid. Required on virtually all public works projects.
• Performance bond — guarantees you'll complete the work according to contract terms.
• Payment bond — guarantees you'll pay your subcontractors and material suppliers.

Public projects (schools, roads, government buildings) almost universally require all three. Private commercial projects increasingly require performance and payment bonds for contracts over $500,000. Your bonding capacity — the maximum bond amount a surety will write for you — is based on your financials, work history, and credit. Think of it like a credit limit for your contracting business.

7. Umbrella / excess liability

An umbrella policy sits on top of your GL, auto, and workers' comp, providing additional limits above and beyond your primary policies. If a claim exhausts your $1,000,000 GL limit, the umbrella picks up the excess.

Construction generates large claims. A worker falls from scaffolding and suffers a traumatic brain injury. A crane drops a load onto a parked car with passengers. A building defect leads to a lawsuit three years after completion. These claims regularly exceed $1,000,000. An umbrella policy adding $1-5 million in additional coverage typically costs a fraction of what your primary GL costs, making it one of the best-value coverages available.

Coverage Types, Typical Limits, and Cost Ranges

Here's a consolidated view of what each policy covers and what you should expect to carry:

These ranges assume a mid-size contractor with reasonable loss history. Your actual costs depend on your trade (roofers pay more than painters), revenue, number of employees, claims history, and the states you operate in.

Certificate Requirements: What GCs Actually Want

The certificate of insurance (COI) is the document that proves you carry the coverage a GC requires. It's also the single biggest source of frustration in construction insurance. Here's why: the certificate itself is just a snapshot. It doesn't modify your policy. But the endorsements behind it — the actual policy changes — are where the real requirements live.

Additional insured

Nearly every subcontractor agreement requires you to add the GC (and often the project owner, the architect, and the lender) as additional insureds on your GL policy. This means your policy extends coverage to them for claims arising from your work. If your drywall installation causes a fire and the building owner sues the GC, the GC can tender that claim to your GL policy because they're listed as an additional insured.

There are different additional insured endorsement forms, and the distinction matters:

• CG 20 10 — covers the additional insured for ongoing operations (work you're currently performing).
• CG 20 37 — covers the additional insured for completed operations (claims that arise after the work is done).
• CG 20 33 — a more restrictive form that limits coverage to the additional insured's vicarious liability only.

Most GCs want both CG 20 10 and CG 20 37. Some carriers issue a combined form. If your carrier only provides CG 20 33, you may get pushback from GCs on larger commercial projects.

Waiver of subrogation

After your carrier pays a claim, subrogation is their right to recover that payment from the party that caused the loss. A waiver of subrogation means your carrier agrees not to pursue the GC for recovery, even if the GC was partially at fault. Most subcontractor agreements require this. It's typically added by endorsement to your GL, auto, and workers' comp policies.

Per-project aggregate

Your standard GL policy has a $2,000,000 general aggregate — the maximum your policy pays in a year across all claims. If you're working five jobsites and a claim on one project uses up your aggregate, the other four projects are unprotected. A per-project aggregate endorsement gives each project its own $2,000,000 limit. For contractors working multiple simultaneous projects, this is a requirement, not a luxury.

What Drives Your Insurance Costs

Contractors often feel like their insurance costs are arbitrary. They're not. Here are the factors that actually move the needle:

Trade classification

Your NCCI class code determines your base rate, and the spread between trades is enormous. A roofing contractor (class code 5551) pays roughly 3-5x more for workers' comp than an electrician (class code 5190), which pays roughly 2x more than a painting contractor (class code 5474). There's nothing you can do about your trade — but if you're misclassified, you may be overpaying significantly. A broker should verify your class code at every renewal.

Claims history

Your experience modification rate (EMR or e-mod) for workers' comp directly reflects your loss history versus your industry peers. An EMR of 1.00 means you're average. Below 1.00 means better than average. Above 1.00 means worse. Your EMR directly multiplies your workers' comp premium: a contractor with a 1.30 EMR pays 30% more than a contractor with a 1.00 EMR for identical payroll and classifications. On GL, your loss history shows up in your loss ratio, which carriers evaluate at renewal.

Revenue and payroll

GL premiums are rated on your gross revenue or subcontractor costs. Workers' comp is rated on payroll. As your business grows, your premium grows proportionally. This is expected. What catches contractors off guard is the audit: if your actual revenue or payroll exceeds what you estimated at the start of the policy, you'll owe the difference at audit. Estimate conservatively, but honestly.

Geography

Where you work matters. States have different workers' comp rate structures, different litigation environments, and different regulatory requirements. Operating in California, New York, or Florida costs more than operating in Texas or the Carolinas. If you work across state lines, make sure your policies cover every state you operate in.

Subcontractor management

If you hire subcontractors and they're uninsured, their claims can flow up to your policy. Carriers evaluate your subcontractor management practices — do you collect certificates? Do you verify coverage? Do you require additional insured status? Strong subcontractor management can meaningfully improve your insurance costs because it reduces your carrier's exposure.

How to Choose a Broker

Your insurance broker is the most important vendor relationship in your business after your banker. Here's what to look for:

Construction specialization

A generalist broker who writes auto and homeowners and also does some commercial work is not the right fit for a construction account. You want a broker or agency with a dedicated construction practice — people who understand class codes, additional insured requirements, wrap-up programs, and how to structure a program that grows with your business. Ask what percentage of their book is construction. If it's less than 25%, keep looking.

Carrier relationships

The broker's job is to match your risk profile with the carrier that's the best fit. That requires access to multiple markets. A good construction broker has appointments with carriers that specialize in construction: Hartford, Zurich, Travelers, CNA, Liberty Mutual, Employers, and the specialty markets like Berkley, RSUI, and Frankenmuth. A broker with only one or two carrier options can't effectively shop your account.

Certificate turnaround

This is the operational test. When a GC calls and needs a certificate with specific additional insured language by end of day, can your broker deliver? Or does it take three days and two follow-up calls? In construction, a slow certificate can cost you a job. Your broker should have systems — ideally automated — that generate certificates in minutes, not days.

Claims advocacy

When a claim happens, your broker should be in the room with you, not just forwarding emails. A good broker helps manage the claims process, pushes the carrier for timely resolution, and makes sure legitimate claims get paid without unnecessary delays. At renewal, they should present your loss history with context — showing the carrier what you've done to prevent recurrence, not just the raw numbers.

Proactive risk management

The best brokers don't just sell policies — they help you reduce risk. That means reviewing your subcontractor agreements, advising on safety programs, monitoring your EMR, and flagging exposures before they become claims. This is the difference between a broker and a policy salesperson.

Common Mistakes We See

After working with dozens of contractors, here are the mistakes that come up again and again:

1. Buying on price alone. The cheapest policy is often the one with the most exclusions. A GL policy that excludes residential work, subcontractor-caused damage, or EIFS (exterior insulation and finish systems) may be half the cost of a comprehensive policy — and completely useless when you need it.
2. Underreporting payroll or revenue. This doesn't save money. It defers it to audit, where you'll pay it back with penalties and interest. Worse, it can trigger a carrier non-renewal, which makes your next placement harder and more expensive.
3. Not reading the subcontract insurance requirements before signing. By the time you sign the sub agreement, you've contractually obligated yourself to carry specific coverage. If your current policy doesn't include what's required, you either pay for mid-term endorsements or breach the contract. Read the insurance section before you sign.
4. Ignoring completed operations coverage. Your liability doesn't end when you leave the jobsite. Construction defect claims can surface years after project completion. Make sure your GL covers completed operations and that you maintain coverage (or tail coverage) after projects are done.
5. Letting certificates lapse. If your policy expires and you don't renew, every GC who has you on file gets a cancellation notice. That's a fast way to get pulled from active projects and blacklisted from future bids.

Getting Started

If you're a contractor and you're not sure whether your coverage is adequate, or you're paying too much for what you have, start here:

1. Pull your current dec pages. Your declaration pages summarize every policy you carry — limits, endorsements, premiums, and exclusions. If you don't have them, ask your broker.
2. Review your last two subcontract agreements. What coverage did the GC require? Does your current program meet those requirements without mid-term changes?
3. Check your EMR. If it's above 1.00, ask your broker what's driving it and what the plan is to bring it down.
4. Ask your broker three questions: How many construction accounts do you handle? What carriers do you have access to for my trade? Can you turn around a certificate with custom additional insured language in under 24 hours?

If the answers aren't satisfying, it's time for a second opinion.