How to Document Existing Conditions Before Work Starts (Contractor's Guide)

John Dutton

The moment your crew arrives on a job site, the clock starts on your liability. Every crack, stain, damaged surface, or pre-existing issue that you don't photograph before starting becomes your problem the moment a client points to it.

This guide covers exactly what to document before work starts, in what order, and how to make that documentation defensible.

Why pre-work documentation is the most important documentation you'll do

After photos protect your reputation. Before photos protect your money.

The most common contractor disputes aren't about work quality — they're about pre-existing conditions. A crack in a wall that was there before you arrived. A water stain on a ceiling that predates your roof work. A scratched floor near where your crew was working.

Without a GPS-tagged, timestamped photo of that crack taken before anyone started work, you have a conversation. With it, you have evidence. The dispute ends before it becomes a claim.

The pre-work documentation checklist

Exterior

All exterior walls — full elevation photos and close-ups of any damage
Roof condition if accessible or visible
Driveway and hardscape — any pre-existing cracks or damage near work areas
Neighbouring property boundary — document any conditions at or near the property line

Interior — all rooms in scope

Every wall — full wall photo plus close-up of any damage, staining, or previous repair
Ceiling — cracks, water stains, existing texture or finish
Floor — scratches, gaps, damaged boards near work areas
Windows and doors — existing chips, cracks, or operation issues
Trim and millwork — existing wear and damage

Mechanical and utility areas

All existing fixtures and equipment — condition and model/serial where relevant
Pipe and conduit condition where visible
Any existing non-code conditions — document with a note explaining they were pre-existing

Adjacencies

Rooms adjacent to work areas — document conditions of floors, walls, ceilings near access routes
Stairs and corridors your crew will use for access

How to make pre-work documentation legally defensible

Three requirements: GPS tagging per photo (not per project), server-confirmed timestamp (not device camera roll), and automatic project association at the moment of capture.

Manifold's GPS photo feature handles all three automatically. Open the app on a job, take photos, and they're tagged with location, date, and time — server-confirmed — and associated with the project by address. No manual tagging. No post-job upload. The chain of custody is established at the moment the shutter fires.

Walk every room before your crew starts. Takes 3 minutes. Protects you for the life of the project.

Start your free trial — no credit card. Or read our GPS photo documentation guide for more on what makes a photo legally useful.