Bi-level versus split-level lower floors

Both house styles were popular when much of Ken Caryl was built. Each has its own moisture pattern.

Bi-level (raised ranch)Split-level
Lower floor sits partly below grade on all sidesSeveral half-levels, with the lowest often a basement or crawlspace
Lower-floor windows are close to the ground, often in shallow wellsSome homes have a crawlspace under one section
Lower bedrooms and family rooms sit against cool foundation wallsLower family rooms are partly buried on one or more sides
The entry landing between floors can collect snowmelt tracked inAdditions and remodels sometimes connect levels in tricky ways

Why these lower floors are vulnerable

A lower level that is half above ground feels like ordinary living space, so owners treat it that way, with carpet, paneling or drywall right to the floor. But the walls behind those finishes are still foundation walls in contact with soil. When grading settles or a window well fills, water reaches that wall, and the finished side hides it.

Ken Caryl lies in a valley against the foothills, and some lots slope noticeably. Homes there can see runoff from uphill during heavy storms and spring melt. Homes built in the 1970s and 1980s are also of an age where original windows, water heaters and plumbing connections may be due for attention.

Ken Caryl is unincorporated, so building permits go through Jefferson County rather than Douglas County, and many homes are part of a master association with its own covenants.

A lower-level inspection routine

  1. Look at the outside first

    Check whether soil slopes away from the house and whether lower window wells are clear and drain.

  2. Feel carpet edges along exterior walls

    Dampness or a musty smell at the tack strip is an early sign.

  3. Check behind paneling

    Wood paneling, common in older lower levels, can hide growth on its back side. Look at the bottom edge with a flashlight.

  4. Find the crawlspace hatch

    In split-levels with a crawlspace, check for standing water, a damaged vapor barrier, or growth on joists.

Common sources in Ken Caryl homes

  • Shallow window wells below grade on lower-floor bedrooms
  • Settled soil along the foundation from decades of irrigation
  • Original or aging water heaters in lower-level utility rooms
  • Older aluminum windows that sweat in winter
  • Crawlspaces with torn or missing vapor barriers

Local questions

  1. Does the Jefferson County building division require a permit for the repair work?
  2. Do master association covenants require approval for regrading or window well covers?
  3. Has the crawlspace ever been inspected or encapsulated?
Map of Ken Caryl. It shows an area, not an office or a job site.

General information for Highlands Ranch, not a quote or professional advice. In an emergency, call 911.