Hi @Stan TallmanHere are the most logical causesHydrostatic Pressure (Groundwater Seepage) - During or after heavy rain, water in the soil builds up pressure and forces its way up through weak points in the foundation.Slab Foundation Leak or Plumbing Issue - Even though you're on city sewer, it’s still possible for a drain or sewer line under the slab to be cracked or compromised.Improper Grading or Drainage - If water is pooling near the foundation and the grading isn't directing it away, it may seep under the slab.Improper Vapor Barrier or Slab Pour - If the vapor barrier under the slab was poorly installed—or skipped altogether—moisture will push upward over time.

When I vet a future-proof market, I’m watching for:Improving habitability: Milder summers, cooler nights, stable air quality, lower flood and fire risk.Water security: Access to groundwater, rivers, or steady rainfall.Lower wildfire exposure: Coastal edges or greener corridors where burn risk is historically lower.Existing migration momentum: People already relocating from higher-risk zones like the Southwest or parts of Northern California.Cost of living: Still affordable enough that buyers, retirees, and remote workers aren’t priced out.Business/food pivots: Watch vineyards, growers, and small ag operations — many are migrating north for better growing conditions.Coastal Edges Are Back in PlayOne of the most interesting shifts?

I’ve dealt with similar issues in lower-level units, and they can definitely be tricky.Since you’re seeing water damage in both the front and back of the unit, it’s likely a combination of grading/drainage issues and possibly hydrostatic pressure (groundwater pushing in from the outside), especially if it’s a basement-level space.Here’s who I’d suggest contacting, in this order: 1.

not really sure of what the specific issue is but yes, you can do that, just make sure the fabric you use is water permeable you want the ground water to still get through to the tree roots.  

The arena was constructed pretty much all above ground due to flooding and ground water issues.

A Phase I site assessment is a non-intrusive site investigation and does not typically involve the sampling of soil, air, groundwater, and/or building materials.

Above all else make sure you have sweet ground water if in the countryside.  

And the groundwater is incompatible for human consumption due to abandon mines.No utilies, no stores, no police or emergency presence for a good hour, no nothing.

.), existing site conditions (high ground water, site topography, existing soil types and soil environmental concerns, etc.), the location, depth, and capacity of utilities to service the site - including public utilities (sanitary, storm and water services), franchised utilities (power, gas, cable), capacity of the local streets to accommodate additional traffic from your development...Be sure to find out if there are any specific local ordinances you need to satisfy (possible tree & wetland surveys, together with any necessary tree & landscape or wetland mitigation plans) and whether there are any concerns from municipal departments (e.g. hydrant locations from the fire department, storm inlet and retention requirements, as well as asphalt / concrete road requirements from the engineer), entrance requirements from the road commission (left turn and passing lanes at the site entrance), etc.Once you get past all this you can finally prepare a preliminary site plan and enter the political arena to get preliminary site plan approval, and to address any concessions the board and neighbors want from you to overcome their objections to your development.

Assuming the property is in the Denver area, the issue is likely drainage and ground water.