What may be original
- Region-specific envelope and service systems
- Later retrofit layers should be recorded separately
United States House DNA
Post-war expansion
Rapid suburban construction, vented crawl spaces or basements, early insulation and ageing service systems.
1940–1969
What deserves attention
- crawl moisture
- foundation drainage
- attic ventilation
- service upgrades
Reduce uncertainty first
- Confirm original construction era
- Record major renovations
- Compare symptom timing with weather and system use
Add to House DNA
Open My House →Original era is only the start.
Record later insulation, windows, roof, ventilation and service replacements in My House before relying on era assumptions.
