Construction Job Site Documentation Best Practices for General Contractors

Managing Multiple Trades Means Managing Multiple Liabilities

When you're running a kitchen extension with a bricklayer, an electrician, a plumber, and a tiler, you own the coordination. And when something goes wrong, the client comes to you first — not to the individual trade.

That kitchen ceiling crack? Could have been the bricklayer, could have been poor plasterboard fixing, could have been pre-existing. Without documentation, you're guessing — and so is everyone else.

General contractors who run tight documentation know exactly what each trade inherited, what they delivered, and what the site looked like at every handover point. That's how disputes die before they start.

What "Job Site Documentation" Actually Means

It means creating a visual and written record of the site at every significant stage:

• Before any work begins
• At each trade handover
• After each phase of work
• At practical completion
• After any defects are rectified

It does not mean photographing every brick or every cable. It means capturing the key moments when the state of the site changes hands or changes condition.

Best Practices by Phase

Phase 1: Pre-Start Survey

Before the first skip arrives, photograph the property inside and out.

Exterior:

• All four elevations of the building
• Driveway, garden, boundary walls, and neighbouring fences
• Any existing cracks in render, brickwork, or masonry

Interior (all rooms affected or adjacent to works):

• Every wall, ceiling, and floor from corner to corner
• Existing fixtures and fittings
• Any pre-existing damage — cracked tiles, stained ceilings, damaged skirting

Send a summary of the pre-start photos to the client before work begins. This establishes the baseline. Everything that happens from this point is your responsibility to record.

Phase 2: Trade Handovers

When one trade finishes and another starts, photograph the handover point.

For example:

• After first fix electrical and plumbing: photograph all the rough-in before plasterboard goes up
• After plastering: photograph the dry walls before painting or tiling starts
• After screed: photograph before floor finishes go down
• After second fix: photograph completed fixtures before decoration

Each handover photo protects both you and the subcontractor. If plaster cracks six months later and the client blames the plasterer, the handover photos show what substrate the plasterer received and what condition they handed back.

Phase 3: Practical Completion

At practical completion, treat the site like a surveyor would.

• Room-by-room photos: all four walls, ceiling, floor
• Every new fixture photographed and checked as working
• Every area of new or repaired work
• Outstanding snags list with photos of each item

This is the formal record you hand to the client alongside the final invoice. It's also what you reference if they raise a defect claim three months later.

Phase 4: Defect Rectification

When defects are called in:

• Photograph the defect as reported
• Photograph the repair in progress
• Photograph the completed repair
• Note the date and who carried out the work

A pattern of proper defect records demonstrates that you take quality seriously and respond professionally. It also protects you if a client tries to escalate a defect that was properly rectified into a larger claim.

Organising Documentation Across Multiple Trades

The system breaks down when different subcontractors are maintaining their own photo records and no-one is coordinating them.

The general contractor should hold the master record for each job. That means:

• All pre-start photos
• All trade handover photos
• All completion photos

Subcontractors can — and should — maintain their own trade-specific records (see how to document tile installation and electrical installation photo documentation). But you need the coordination layer.

The Right Tool for the Job

Keeping site documentation organised doesn't require specialist software. It requires a consistent process.

The most common failure is inconsistency: some jobs are documented well, some barely at all. When a dispute lands on a poorly documented job, all the well-documented jobs are irrelevant.

JobDone is built for tradespeople and general contractors to document a job, generate a report, and share it with a client in under 2 minutes. Each job has its own record. Photos are timestamped and attached to the job automatically. The report goes to the client as a PDF.

Practical Tips That Make a Difference

Photograph before, not after the problem. The most common failure is not photographing pre-existing damage because it "didn't seem relevant." It always seems relevant later.

Use a naming system. Whether it's JobDone or a folder on your phone, photos need context. A folder called "November jobs" with 200 unnamed photos is not documentation.

Send reports the same day. A report sent the day the work finishes carries more weight than one created weeks later. Send it before you leave the site.

Get a signature or acknowledgement. If you send a completion report and the client replies with "great, thanks" — that's acknowledgement. Keep it.

Try It on Your Next Job

The general contractors who rarely have disputes are not luckier than everyone else — they document better. The discipline of pre-start photos, trade handover photos, and completion reports becomes routine within a few weeks.

Download JobDone free and bring the same rigour to every job — from a single-trade bathroom fit-out to a multi-trade extension project.