Interior finishes cost estimating for multifamily projects is one of the most commonly inaccurate elements of an early-stage development budget. The inaccuracy arises from three sources: applying national average per-unit costs to markets with materially different labor and material pricing, omitting scope items that are not visible in the concept design but that appear in every multifamily project, and using single-line estimates that cannot be benchmarked or refined as the design develops.
A defensible interior finishes budget, one that can survive lender cost consultant review and the bid process without significant revision, requires per-unit estimates by division, current market pricing from a qualified finishes sub, and explicit scope inclusions that allow the estimate to be compared against the eventual bids on an apples-to-apples basis.
Per-unit cost ranges by division and finish grade
The following per-unit cost ranges reflect current pricing in the western US markets Innergy serves. Market-specific pricing varies from these ranges based on local labor conditions, material availability, and project scale.
Division 6 , Finish carpentry and cabinets. Workforce or Class C: $1,800 to $2,800 per unit. Class B: $2,800 to $4,200 per unit. Class A: $4,200 to $7,500 per unit. Custom or semi-custom with premium door profiles: $6,000 and above per unit.
Division 8 , Mirrors and shower doors. Entry-level mirrors and framed shower doors: $350 to $550 per unit. Semi-frameless shower enclosures with full mirrors: $700 to $1,100 per unit. Frameless glass enclosures with premium hardware: $1,100 to $2,000 per unit.
Division 9 , Flooring. LVP at 12 to 16 mil throughout: $1,800 to $2,800 per unit. LVP at 20 mil throughout: $2,500 to $3,800 per unit. LVP at 28 mil with tile in wet areas: $3,200 to $4,800 per unit. Large-format tile in multiple areas: add $400 to $800 per unit.
Division 10 , Specialties. Basic toilet accessories and wire shelving: $600 to $900 per unit. Full accessory package with mailboxes, signage, and Knox box allocation: $1,200 to $2,000 per unit.
Division 11 , Window treatments. Cordless horizontal blinds: $350 to $600 per unit. Motorized roller shades: $1,200 to $2,400 per unit depending on window count.
Division 12 , Countertops. Laminate: $400 to $700 per unit. Quartz at standard thickness: $700 to $1,400 per unit. Premium quartz or engineered stone at thicker profile: $1,200 to $2,200 per unit.
Division 22 , Plumbing fixture supply. Basic production fixtures: $800 to $1,400 per unit. Mid-grade coordinated fixtures: $1,400 to $2,200 per unit.
Scope items most commonly missing from early-stage estimates
Early-stage finishes estimates consistently omit the same categories of scope. Adding these items before the estimate goes to a lender or investor prevents the budget revision that these omissions produce when real bids arrive.
Common area and amenity finishes are frequently excluded from per-unit finishes estimates that focus on residential unit cost. A 200-unit project may have a clubroom, fitness center, and leasing office that add $80,000 to $200,000 in finishes cost that does not appear in a per-unit estimate.
Division 10 common area scope including corridor signage, elevator cab accessories, lobby toilet accessories, and package room equipment adds cost that per-unit estimates do not capture.
Stair finishing scope on townhome and podium projects with wood-frame stairs requires treads, risers, handrails, and balusters that do not appear in flat apartment unit estimates.
Garage and utility area finishes including concrete floor sealer, utility shelving, and painted block walls in garage structures add scope on projects where these areas are included in the finishes subcontract.
Using budget pricing from a finishes sub
A finishes sub’s budget pricing for a specific project, based on the actual unit type matrix and the preliminary specification, produces more accurate early-stage estimates than published cost indexes for two reasons: it reflects current local market pricing rather than national averages, and it covers the specific scope for this project rather than a generic per-unit assumption.
Request budget pricing from a qualified finishes sub during the development pro forma stage, before the project goes to construction documents. The budget pricing should be organized by division, by unit type, and by finish grade. It should explicitly list the scope included in the estimate and the scope excluded.
The time from budget pricing request to receipt should be two to three business days for a qualified finishes sub with the capacity and market knowledge to price the project. A sub who cannot provide organized budget pricing within this timeframe is not structured to support the early-stage development process that most multifamily developers run.
How per-unit cost varies by market
Western US interior finishes markets have meaningful per-unit cost differences driven by local labor conditions and material availability. Seattle and Portland markets run fifteen to twenty-five percent above the Mountain West markets for the same specification grade. Texas markets generally run ten to fifteen percent below Mountain West markets for comparable specification. Coastal California pricing, which some national cost indexes reference, is not relevant for western US multifamily cost estimating.
Confirm the market-specific pricing with a finishes sub actively working in the specific market before building a development budget. Cost index data is a directional reference, not a budget basis.
How Innergy supports development budgets
Innergy provides budget pricing organized by CSI division and by unit type for multifamily projects in development in all six service states. Our budget pricing reflects current procurement and labor costs in the specific market, includes all seven divisions with explicit inclusions and exclusions, and is organized in the format that development pro formas and lender cost consultants expect. For finishes budget pricing on multifamily projects in TX, WA, OR, CO, UT, NM, or AZ , contact us and we respond within one business day.
Innergy covers Division 6-Finish Carpentry & Cabinets, Division 9-Flooring, and Division 10-Specialties for multifamily construction under a single subcontract.
The finishes budget that survives the bid process without significant revision is built on current market pricing from a sub actively working in the specific market, organized by division and by unit type, with explicit inclusions and exclusions that match the project’s actual scope. Everything else is a placeholder that will be corrected by the bids.