Why Verbal Agreements Don't Protect You
Most contractor disputes don't stem from bad work — they stem from misaligned expectations about scope, price, timeline, or what happens when something changes. A well-written service agreement doesn't just protect you legally; it aligns expectations with the customer before work begins, which prevents disputes from arising in the first place.
This guide covers the essential clauses every contractor service agreement should include and the key differences between residential and commercial agreements.
Essential Agreement Clauses
1. Scope of Work
The most litigated section of any contractor agreement. The scope must be specific: what work is included, what materials are used, and — equally important — what is explicitly excluded. If you're patching one section of drywall, the agreement should state that the scope does not include repainting the entire wall or matching existing texture.
2. Price and Payment Terms
State the total price clearly. Define when payment is due (on completion, 50/50 split, or on invoice receipt). Specify acceptable payment methods. Include language about what happens if payment is late: "Invoices unpaid after 30 days accrue interest at 1.5% per month."
3. Change Order Clause
Any change to the original scope — additions, deletions, or substitutions — must be documented in a written change order signed by both parties before the additional work begins. This clause is what prevents "while you're here, could you also..." from becoming free labor.
4. Timeline and Delay Clause
State the expected start and completion date, and include language that addresses delays caused by weather, material availability, or customer-caused delays. Protect yourself from claims that a delay caused by a permit hold-up was your fault.
5. Warranty
Define what warranty you provide on your work (typically 1 year on labor) and any manufacturer warranties on materials. Specify what voids the warranty (customer-caused damage, modifications by another contractor).
6. Dispute Resolution
Include language specifying that disputes are resolved first by negotiation, then by binding arbitration if not resolved — rather than through court litigation. Arbitration is faster and cheaper. Specify the governing state law.
7. Limitation of Liability
Cap your maximum liability to the value of the contract. This limits your exposure in extreme scenarios — particularly important for commercial work.
Residential vs. Commercial: Key Differences
Residential: Consumer protection laws apply in most states — agreements must be written in plain language, and customers often have a 3-day right of rescission for contracts over certain dollar amounts. Keep agreements simple and readable.
Commercial: More negotiation expected — commercial clients may redline your standard agreement. Key additions: lien rights language, certificate of insurance requirements, progress billing schedules, retainage terms, and work authorization protocol.
Digital Signatures Are Fully Enforceable
Under the ESIGN Act and UETA, electronic signatures are legally binding for contractor agreements in all 50 states. Send your agreement digitally and collect a signed copy before mobilizing — this is faster than paper and creates a timestamped audit trail if a dispute arises later.
Fieldbase lets you send agreements, get them signed digitally, and attach the signed agreement to the job record — everything in one place.
Key Takeaways
- A clear scope of work with explicit exclusions prevents most customer disputes
- Include a change order clause — no additional work starts without written authorization
- Define payment terms, late payment penalties, and dispute resolution in every agreement
- Residential agreements must comply with consumer protection laws — keep language plain
- Digital signatures are fully enforceable and faster to collect than paper signatures