How to Review a Construction Contract Before You Sign in 2026

Because reputation tells you what a contractor has done in the past. A contract determines what happens when something goes wrong on your project. Those are two different things. A contractor can have a perfect rating and still hand you a contract that gives them the right to demand full payment before the project is finished, waives your right to recover costs when they run six months late, or leaves you personally liable if their plumber files a mechanic's lien on your home because the GC never paid the sub. Based on 2026 construction cost data, the average kitchen remodel in California runs $55,000-$150,000. A home addition runs $200,000-$500,000. A bathroom gut-and-rebuild is $30,000-$80,000. These are not transactions you complete on a handshake and a five-star review. The contract is the only legal document between you and the person spending your money. Every page of it matters.

Change order language, the payment schedule, lien waiver requirements, and binding arbitration. Any one of these, written in the contractor's favor, can cost you more than the wrong contractor would have in the first place. As a contractor, I can tell you that 90% of homeowners never read the change order clause. That is the clause that will cost them $30,000. It does not matter how good the relationship is at the start. Once a project hits unforeseen conditions or scope creep, the change order clause is the only thing standing between you and an unlimited bill. The most dangerous words in any construction contract are 'as needed' and 'TBD.' Every decision you thought was settled in the bidding phase becomes a change order the moment those words appear in the scope of work.

California law requires specific language in every home improvement contract over $500. A surprising number of contractor-written contracts are missing it - and contractors are counting on you not knowing that. According to CSLB requirements, every home improvement contract in California must include: the contractor's CSLB license number, a 'Notice to Owner' about mechanics liens (B&P Code Section 7159), the homeowner's three-day right to cancel (Civil Code Section 1689.5), a specific start date and a substantial completion date, the total contract price clearly stated, and a description of the work to be performed. The three most-often-missing items are: a binding completion date, a lien waiver requirement per draw, and a retention clause. Retention is the homeowner's most powerful protection - you hold back 10% of each payment until the punch list is fully signed off.

You put your requests in writing, you use specific language, and you do it before you sign - not after. Most legitimate contractors will negotiate. The ones who will not are telling you something important about how the job will go. Step 1: Send an email, not a text. That creates a documented record. Step 2: Be specific with the language. Don't say 'I am not comfortable with the payment schedule.' Say 'I would like to adjust the payment schedule so that no single draw exceeds 25% of the total contract value, with the final 10% held in my account until the punch list is signed off by both parties.' Step 3: Give them the replacement clause. Write the language you want and ask them to confirm in writing. A contractor who walks away because you asked for a completion date, a lien waiver requirement, or a 10% retention clause is not a contractor you want building your home.

On a $75,000 kitchen remodel, a front-loaded payment schedule can put $45,000-$52,000 in the contractor's hands before the walls are even closed. Once you have paid that much, your leverage is gone. California law caps the initial deposit at $1,000 or 10% of the total contract price, whichever is less (B&P Code Section 7159.5). If a contractor asks for a $15,000 deposit on a $75,000 job, that is an illegal demand. A well-structured payment schedule ties each payment to a verified completed milestone: 10% at contract signing, 20% at demolition complete, 20% at rough inspection passed, 20% at drywall complete, 20% at cabinets and finishes, and 10% at punch list sign-off. The final $7,500 stays in your account until every item on the punch list is done.

Yes, on any project over $25,000. Attorney review at $300-$500/hr makes sense for projects over $500,000. For projects in the $25,000-$500,000 range, Opsite's Contract Review ($199-$699 by project size) runs 25+ checks against California law, generates a negotiation script with ready-to-paste counter-language, and includes 2 free re-reviews if the contractor comes back with a revised draft. As a contractor, I can tell you that most homeowners have no idea which clauses are actually negotiable. That is not because they are not intelligent. It is because contractors write and sign these contracts every single week. Homeowners sign one every five to ten years. The information gap is built into the transaction.