The interior finishes subcontract on a multifamily project is the document that converts a bid price into enforceable project commitments. A well-structured subcontract makes the sub’s process obligations explicit, creates a record of scope inclusions and exclusions, and establishes the pre-construction deliverable requirements that prevent the most expensive finishes-related problems. A poorly structured subcontract leaves the coordination obligations implicit, which means they become the superintendent’s problem rather than the sub’s contractual commitment.
Most interior finishes subcontracts are too thin on process obligations. They define the price and the scope at a general level but leave the timing of critical coordination steps, the format of required submittals, and the sequencing commitments that protect the project schedule either unwritten or described in vague terms that do not create enforceable obligations.
Scope definition requirements
The subcontract should explicitly list every scope item included in the award, organized by CSI division. For each division, the scope list should identify:
Division 6: cabinet packages by unit type including the specific cabinet line, door style, door finish, and hardware finish. Base and casing trim species and profile. Any architectural millwork or custom built-ins.
Division 8: vanity mirror dimensions and mounting method by unit type. Shower enclosure type (frameless, semi-frameless, bypass) and glass thickness. Hardware finish.
Division 9: flooring product by application including manufacturer, product name, and wear layer for LVP; construction type, face weight, and fiber for carpet; and tile format and grout specification for tile. Acoustic underlayment specification with the tested IIC assembly data.
Division 10: a complete list of every accessory category covered, toilet accessories, toilet partitions, signage, mailboxes, fire extinguisher cabinets, Knox boxes, and wire shelving, with explicit exclusion of any category not included.
Division 11: window treatment product type and operation type by unit type and by commercial space type if applicable.
Division 12: countertop material, edge profile, and sink cutout process by unit type.
Division 22: fixture list by unit type including sink models, shower pan model, and trim kit brand and model compatibility confirmation process.
Any scope item not on the explicit list should be treated as excluded. The subcontract should state: “Items not explicitly included in this scope description are excluded from this subcontract and are not the responsibility of the subcontractor.”
Pre-construction deliverable requirements
The subcontract should specify pre-construction deliverables with hard deadlines:
Blocking specifications for Division 10 accessories including grab bars, fire extinguisher cabinets, and mailbox alcoves, delivered to the GC no fewer than fourteen calendar days before the framing crew is scheduled to advance on the relevant walls.
Mailbox rough opening dimensions delivered to the GC no fewer than fourteen calendar days before the framing crew is scheduled to advance on the mailbox alcove wall.
Knox box location coordination with the applicable fire authority initiated no fewer than six weeks before projected occupancy.
4C USPS mailbox approval process initiated with the owner or property manager no fewer than six weeks before projected occupancy.
Unit type matrix review confirmation, in writing, delivered to the GC before any procurement order is placed.
Trim kit compatibility confirmation, signed by both the Division 22 sub and the licensed plumbing sub, delivered before any trim kit procurement order is placed.
Sink cutout template transmission confirmation, in writing, from the Division 12 sub acknowledging receipt of the Division 22 sub’s cutout template before any countertop fabrication is authorized.
These deliverables should be listed in the subcontract as conditions precedent to the sub’s right to proceed to the relevant installation phase. A sub who fails to deliver blocking specifications on time is not entitled to claim schedule impact from the resulting framing delay.
Sequencing commitments
The subcontract should specify minimum sequencing requirements:
The Division 9 flooring sub does not mobilize flooring installation crews to any floor until cabinet installation on that floor is confirmed complete by the GC in writing.
The Division 12 countertop sub schedules template measurement on the day cabinet installation is confirmed complete on each floor.
The Division 11 window treatment sub does not mobilize to any floor until both paint completion and flooring completion on that floor are confirmed by the GC in writing.
The Division 10 accessories sub schedules installation after paint and flooring are confirmed complete on each floor.
These sequencing requirements protect the predecessor trades and prevent the damage-and-replacement costs that out-of-sequence installation creates.
Submittal obligations and approval process
The subcontract should require submittal of product data sheets for every specified product before procurement. Submittals should include the manufacturer’s product data, the specific product name and model number, the finish color or specification, and any applicable performance data, IIC testing, NFPA 701 certification, or ADA compliance documentation.
The subcontract should specify the submittal timeline: all submittals for the initial procurement order submitted to the GC no fewer than twenty-one calendar days before the projected procurement date. The GC has ten business days to review and respond. The sub may not order any product without either GC approval of the submittal or written authorization to proceed pending formal approval.
Change order procedures
The subcontract should specify a formal written change request process for any scope modification, product substitution, or schedule change. Verbal authorizations should be explicitly excluded. The change request should identify the scope change, the reason for the change, the cost impact, and the schedule impact before any work under the modified scope proceeds. Work performed under unwritten change authorizations should be explicitly excluded from the sub’s right to payment for the modified scope.
How Innergy operates within this structure
Innergy operates under formal subcontracts that include these provisions. We deliver pre-construction deliverables on the timelines specified in the contract, submit all products before procurement, and process scope changes through a formal written change request. For GCs who want a finishes sub whose process aligns with a well-structured subcontract, contact us and we respond within one business day.