Contractor field guide · Free template
The customer bought it. Who owns each decision?
Before installing an owner-provided faucet, tile, fixture, appliance, or hardware set, document selection, quantities, compatibility, condition, delivery, returns, delays, product claims, and workmanship.
The short answer
Use a responsibility record, not a blanket disclaimer.
A customer-supplied materials approval identifies exactly what the owner is providing and assigns each practical responsibility: product selection, measurements, quantity, delivery, inspection, compatibility, storage, returns, schedule effects, product warranty claims, installation, and workmanship.
The important distinction is between the product and the installation. A manufacturer or seller may handle a defective-product claim while the contractor remains responsible for whatever installation obligations the contract and applicable law place on the contractor.
Responsibility matrix
Assign the task before it becomes a dispute.
Do not assume that “customer supplied” answers every downstream question. Write an owner, contractor, or joint responsibility beside each row.
- 01
Selection and specification
Record manufacturer, model, size, finish, quantity, and approved equivalent. State who verified design preference and measurements.
- 02
Delivery and completeness
Set the required-on-site date, delivery location, storage plan, and who checks boxes, parts, accessories, and visible damage.
- 03
Compatibility and code
Assign who confirms connection sizes, ratings, listing, substrate, rough opening, manufacturer instructions, permit, and code requirements.
- 04
Returns and delays
State who contacts the seller, transports returns, orders replacements, pays restocking or freight, and approves modification or another trip.
- 05
Product and workmanship claims
Separate manufacturer or seller remedies for the product from the contractor’s written labor and installation obligations.
Copyable template
Customer-supplied materials approval
List every owner-provided item separately. Attach photos, receipt or order details, and manufacturer instructions when useful.
Create and sign it with JobSign →- Project & installation area
- [Customer, property, room/area, original contract or work order]
- Product identification
- [Item, manufacturer, model/SKU, size, finish, quantity, seller, order/receipt reference]
- Selection & measurements
- [Who selected the product and who verified dimensions, finish, capacity, or performance requirements]
- Required delivery
- [Date/time needed on site, delivery location, responsible party, and storage/protection plan]
- Pre-installation check
- [Visible condition, count, packaging, obvious missing parts, stated model, and photo references]
- Compatibility responsibility
- [Connections, rough opening, substrate, rating, listing, instructions, permit, and code review]
- Installation scope & price
- [Included labor, ordinary accessories, disposal, fixed/hourly price, and exclusions]
- Problem handling
- [Who contacts seller/manufacturer, returns product, obtains replacement, and pays freight/restocking]
- Schedule & added work
- [Effect of late/missing/incompatible items; return-trip or modification price requires approval]
- Warranty routing
- [Product warranty contact and records; contractor’s separately stated installation/workmanship coverage]
- Stop conditions
- [Recall, visible damage, missing critical part, unsafe condition, failed compatibility, or instruction conflict]
Adapt this operational template to your contract, trade, products, and jurisdiction. It is not legal advice and does not waive duties that cannot lawfully be waived.
Five field examples
Each product creates a different handoff.
Connections and included parts
Record hole pattern, deck thickness, supply connection, finish, accessories, and who replaces a missing mounting kit.
Quantity, shade, and breakage
Record square footage, waste allowance, lot or dye variation, trim pieces, layout approval, and replacement availability.
Listing, rating, and support
Check location rating, electrical characteristics, mounting support, lamp/driver inclusion, and obvious shipping damage.
Opening, utilities, and delivery
Assign cabinet-opening verification, electrical/plumbing/gas requirements, delivery path, haul-away, and startup responsibility.
Function and preparation
Record handing, backset, door thickness, keying, finish, latch/strike preparation, and modification approval.
A practical receiving check
Inspect enough to make a good field decision.
Confirm the stated item
Compare model, size, finish, quantity, and ordered accessories with the approval record.
Photograph before work
Record packaging, visible damage, finish defects, and the condition of major components.
Check obvious completeness
Lay out required mounting pieces, adapters, templates, instructions, and owner-selected accessories.
Do not improvise silently
Pause for a recalled, damaged, incomplete, incompatible, or unsafe product and document the next decision.
Research basis
Detailed product records make the handoff clearer.
California’s Contractors State License Board advises that home-improvement contracts describe products in detail, including size, color, quantities, manufacturer model information, and who will perform each part of the work. It also recommends putting labor and material warranties in writing. Requirements vary by jurisdiction, so contractors should adapt the record to their location and contract.
The FTC explains that product warranty terms and claims procedures vary and recommends retaining the warranty and receipt. The CPSC maintains a searchable recall database. A recall or safety concern should trigger a stop and appropriate follow-up, not an attempt to transfer away nonwaivable obligations.
- California CSLB: Home Improvement Contracts ↗
- FTC: Warranties ↗
- CPSC: Recalls and Product Safety Warnings ↗
This guide provides general operational information. It does not determine warranty coverage, code compliance, product suitability, contractual responsibility, or legal duties in a particular jurisdiction.
Customer-supplied material questions
Is the contractor responsible if an owner-supplied product is defective?
Responsibility depends on the agreement and applicable law. Separate the manufacturer or seller product claim from the contractor’s installation and workmanship obligations instead of using a blanket no-warranty statement.
Should a contractor inspect customer-supplied materials?
Document a practical check of stated model, quantity, visible condition, obvious missing parts, and apparent compatibility. Clarify that this is not destructive testing or a guarantee against concealed defects.
Who pays when the product does not fit?
Decide before installation who verified dimensions and compatibility. If modification, replacement, delay, or a return trip is needed, describe and approve that added work separately.
Can the customer waive every product and installation warranty?
A blanket waiver may be inaccurate or ineffective. Product, seller, manufacturer, contractor, and implied obligations differ and may be governed by applicable law. State the actual responsibilities and obtain local legal guidance where needed.
Before installation
Turn the product handoff into a signed decision.
List the item, attach condition photos, assign the responsibilities, and send the customer a JobSign approval before installation begins.
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