Industry-Standard Construction Contracts Explained: Which One Do You Need?

What Are Industry-Standard Construction Contracts?

Industry-standard construction contracts are pre-written templates published by professional organizations and widely used across the country for construction projects. Think of them as fill-in-the-blank forms that spell out the deal between you (the contractor) and the building owner.

There are many form contracts available, but for most jobs in NYC, you only need to know about four or five key document types. This guide will tell you which one fits your situation.

The big question most contractors have: 'The owner asked me to send a formal contract -- but which one?' The answer depends on how the job is priced.

The Key Contract Types You Need to Know

Here's the simple breakdown. There are really only two pricing scenarios in construction, and each one has its own contract form:

• Fixed price job, big project (you quoted one number for the whole job) -- Use a Stipulated Sum agreement
• Fixed price job, small project (under $250K, simpler paperwork) -- Use an Abbreviated Stipulated Sum agreement
• Cost-plus job (the owner pays your costs + your fee) -- Use a Cost of the Work Plus Fee agreement for big jobs, or a simplified version for smaller jobs
• All standard-form contracts come with a companion General Conditions document -- the 'rules of the game' that both sides agree to follow

That's it. Those are the main types. Let's look at each one.

Stipulated Sum -- For Fixed Price Jobs

This is the most common type. If you gave the owner a price -- say $150,000 to do the work -- and they accepted it, a Stipulated Sum agreement is your contract.

When to use it: You know exactly what the work is. There are drawings and specs. You gave a number and the owner said yes. Simple.

What it covers: How much you get paid, when you get paid, what happens if the work changes, and what to do if there's a disagreement.

Abbreviated Stipulated Sum -- For Small Fixed Price Jobs

This is the shorter, simpler version of a full Stipulated Sum agreement. Same idea -- fixed price -- but designed for smaller projects where you don't need a complicated contract.

When to use it: The job is under $250,000. The scope is clear and simple. You want a fixed price contract but without all the extra paperwork. Great for apartment renovations, small building repairs, and straightforward commercial work.

The big difference: The abbreviated version is much shorter and easier to read. The general conditions are built right into the document rather than requiring a separate 40-page companion document. This makes it faster to set up and easier for both sides to understand.

Cost of the Work Plus Fee -- For Cost-Plus Jobs

Sometimes the owner doesn't want a fixed price -- maybe the job is too complicated or there are too many unknowns (like renovation work where you don't know what's behind the walls). In this case, the owner pays your actual costs plus a fee for your work.

When to use it: The scope isn't fully clear. It's a renovation with surprises expected. The owner prefers to see exactly where the money goes. The project is over $250,000.

Important: Cost-plus contracts can include something called a GMP (Guaranteed Maximum Price) -- basically a cap. The owner says 'I'll pay your costs plus fee, but the total can't go over $X.' This protects the owner while still giving you flexibility.

Cost-Plus Simplified -- For Small Jobs

This is the simpler version of a Cost-Plus agreement. Same idea -- the owner pays your costs plus a fee -- but with less paperwork. It's designed for smaller, more straightforward jobs.

When to use it: The job is under $250,000. It's a residential renovation, small commercial fit-out, or repair project. You don't need a 50-page contract for a bathroom renovation.

This is probably the right choice for a lot of the work contractors do in NYC -- apartment renovations, building repairs, small commercial jobs.

General Conditions -- The Rulebook

The General Conditions document isn't a contract by itself -- it's like an instruction manual that comes with your main agreement. It explains the rules both sides follow during the project.

What's in it: How payments work step by step. What happens when the owner wants to change the work. Insurance you need to have. What to do if there's a problem or disagreement. When the architect can and can't tell you what to do.

Why it matters: A lot of contractors skip reading the General Conditions because the document is long (40+ pages). This is a mistake. Many of the rules that affect your money -- like when you get paid, how much the owner can hold back, and what happens with changes -- are all in the General Conditions, not in the main contract.

5 Things to Watch Before You Sign

Industry-standard contracts are fair overall, but there are specific things you should check and possibly negotiate before signing:

• Retainage (money held back): The standard is 10% -- meaning the owner holds back 10% of every payment until the job is done. Try to negotiate it down to 5%, or ask for it to drop to 5% after you're halfway done. That money sitting in the owner's pocket is YOUR money.
• When you get paid: The contract says the owner has 30 days to pay after you submit your invoice. Make sure this is actually followed. If they're slow, add a clause that says they owe you interest on late payments.
• Change orders (extra work): NEVER do extra work based on a verbal 'go ahead.' Always get it in writing before you start. If there's a dispute later, a verbal agreement is almost impossible to prove.
• The scope of work: The contract price only means something if what's included is clearly written down. Attach your proposal, drawings, and a clear list of what's NOT included. This protects you from 'I thought that was part of the price.'
• Don't start work without a signed contract: This sounds obvious, but it happens all the time. If a problem comes up and there's no signed contract, you have very little legal protection.

Common Mistakes to Avoid

These are the mistakes we see contractors make most often -- and they're all avoidable:

• Using a fixed-price contract when the scope isn't clear -- this leads to fights about extras and change orders
• Not reading the General Conditions -- you signed a 40-page document you never read, and now there's a rule you didn't know about
• Not customizing the contract -- industry-standard contracts are templates meant to be adjusted for each job. Use them as-is and you might be leaving money on the table
• No clear scope of work attached -- the contract says $150,000 but doesn't clearly say what's included, so the owner expects things you didn't plan for
• Starting work before the contract is signed -- 'We'll get the paperwork done later' is the most expensive sentence in construction

Need Help? We're Here

If you're not sure which contract to use, or you need someone to review the clauses before you sign -- that's completely normal. Construction contracts can be confusing even for experienced contractors.

At ARCONDES, we help contractors with contract questions as part of our consulting services. Whether you need help picking the right form or understanding specific clauses, we'll walk you through it in plain language. Call us or send a message -- there's no charge for the initial conversation.