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Module 6 · Lesson 7

Finish Costs: Where Budgets Bloom

2 min readWritten lesson

Flooring, kitchens, baths, fixtures — how finish choices swing an ADU budget by $40K+, and where spending actually pays back.

Finishes are the only budget category where you hold the pen. Structure costs what it costs; the kitchen faucet is a choice. Here's how the choices add up — and where spending pays back.

The swing is real. On an 800 SF unit, the gap between builder-grade and premium finishes runs $30K–$60K+:

  • Flooring: $3–$5/SF (LVP) → $12–$20/SF (hardwood/large-format tile)
  • Kitchen: $10K–$15K (stock cabinets, laminate, standard appliances) → $30K–$50K (custom, stone, panel-ready)
  • Bathroom: $8K–$12K → $25K+ (tile everywhere, glass enclosure, premium fixtures)
  • Doors/trim/paint/lighting: the quiet multiplier — $5K → $20K across a whole unit

Spend where it pays — the rental math. For rental units, tenants pay for: in-unit laundry, durable good-looking floors (LVP is the landlord's friend), decent counters, and light. They don't pay meaningfully for: premium faucet brands, exotic tile, or custom cabinetry. Mid-range done cleanly rents within dollars of premium — the return on the last $30K of finishes is close to zero.

Spend differently for family or yourself. Housing your parents or downsizing into it yourself? Comfort upgrades (better windows, quieter HVAC, quality shower) earn their keep daily. This is your Module 1 goal steering money again.

The trap to avoid: finish creep. Each upgrade is "only $800 more" and there are forty of them. Set a finish allowance per category in writing before selection starts, and treat the total as a wall. Good contractors provide allowance schedules for exactly this reason (Module 11 covers reading them).

Key takeaways

  • Finish choices swing an 800 SF budget by $30K–$60K+.
  • Rentals: spend on laundry, durable floors, counters, and light — skip premium-brand everything else.
  • Family use justifies comfort spending that rentals don't.
  • Set written per-category allowances before selection starts; "only $800 more" times forty is finish creep.