The culprit: the plastic coupling on this toilet supply broke allowing the water to run all night

Initial demo done for water mitigation and drying

Wet floors

Water in an adjacent bedroom

Looking out of the bathroom. The floor vents and holes for plumbing in the floor prevented the entire home from flooding

Looking into the bathroom. Wet floor

The area around the toilet. This floor would be un-salvageable

Wet around framing

The crawlspace under the structure. This is where all the water went

Had this home not had forced air HVAC with floor vents, the entire home would have been flooded

Damage in the crawlspace. The water was able to drain into the ducts and the crawlspace

Demo complete. This vanity would be salvaged and rebuilt

Demo complete. The walk-in tub in the living room

Removing the particle board bathroom subfloor

The crawlspace stripped and remediated for mold

Crawlspace

Subfloors and framing sprayed with mold-inhibiting primer