New does not mean proven
A completed home that has never been occupied has systems that were commissioned but never run through a season under real conditions. The furnace fired at final inspection; it has not held a house at temperature through a −30 °C week. The sump was installed; it has not seen a spring melt. The grading was placed last month and has not settled.
That combination — everything new, nothing tested — produces first-season failures that are ordinary rather than defective, and they surface in a building with nobody in it.
The moisture problem nobody expects
New construction contains a great deal of water: in concrete, in framing lumber, in drywall compound, in fresh finishes. In an occupied house that moisture leaves gradually through ordinary ventilation and heating.
In an unoccupied house with heat turned low and no ventilation, it condenses. Window condensation, frost on interior glazing, and moisture accumulation in cooler areas are common in unsold new homes through their first winter, and sustained condensation damages finishes and can support mould growth.
The response is to keep heat at a reasonable level rather than minimal, and to have ventilation running rather than switched off entirely — which is often exactly what gets turned off in an empty spec home to save money.
What monitoring should cover
- Interior temperature at multiple points
- Heating operating and holding setpoint under load
- Furnace intake and exhaust terminations clear of snow and frost
- Ventilation system operating
- Window and glazing condensation documented
- Mechanical room checked thoroughly — this is where first-season failures appear
- Sump pump tested and discharge confirmed clear
- Water supply state confirmed
- Grading and drainage observed as the site settles
- Landscaping condition where placed
- Site security — new inventory attracts theft of appliances, fixtures and materials
- Snow clearing for access and presentation
Portfolio rather than property
With more than a handful of vacant units, the useful question stops being "how is this house doing" and becomes "which of these needs attention this week".
That requires one visit standard, one report format, and a consolidated view across the portfolio — otherwise twenty properties produce twenty separate conversations and no picture.
It also makes routing worth thinking about. Properties grouped geographically into visit routes cost meaningfully less per visit than the same properties treated as individual trips, which is what makes frequent monitoring practical at volume.