Outdoor project cost/recovery scenarios

Actual calculation

For each selected feature, multiply its central cost assumption by its feature multiplier. Sum those products and multiply by the selected tier factor. The lower and upper results multiply that adjusted sum by (1 − band) and (1 + band). The recovery ratio rounds adjusted sum ÷ total central cost assumptions × 100. Displayed dollars round to the nearest thousand.

Each central cost assumption is a retained preset, not necessarily the arithmetic midpoint of its low/high range. The tier factor is not the final displayed recovery ratio. Feature grouping badges are static scenario labels, not rankings.

Static ranges, not confidence intervals

The band defaults to ±15%; mapped ZIP presets use ±10–15%, the unmapped 850–853 prefix fallback uses ±20%, and other ZIPs use ±25%. Suggested tiers are static mappings that you can choose to apply. No ZIP sales data is fetched.

Limits and context

This is not investment ROI or rental return: it excludes operating, financing and selling costs, taxes, appreciation, income and subjective enjoyment. Site access, utilities, finishes and approved scope require a separate estimate; no universal site surcharge applies. Confirm permits and safety requirements with the applicable authority and approved project documents. No fence or barrier replaces active adult supervision around water; designate an undistracted adult Water Watcher.

NAR’s national outdoor-features report provides context on how design, materials, location, age and condition affect recovery. It does not calibrate any fixed number here.

Fannie Mae’s comparable-sales lending guide discusses similar physical/legal characteristics and competitive markets, with justified expansion outside an area. It is lending guidance, not a universal legal radius rule. Ask a qualified local appraiser to assess appropriate recent competitive sales.