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09/06/2026 3 min read
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Construction companies: subcontractor contracts and handover protocols online

Construction firms coordinate dozens of subcontractors and every project requires contracts, protocols and H&S consents. See how zipzipdoc digitises this entire flow.

Construction companies: subcontractor contracts and handover protocols online

A construction firm works with dozens of subcontractors at once — bricklayers, electricians, plumbers, carpenters. Every subcontractor needs their own agreement. Every phase of the build closes with a handover protocol. Every new worker must sign a health and safety consent.

That is an enormous amount of paper — and today it can all be handled digitally.

What construction companies need contractually

  • Subcontractor agreement: scope, price, deadline, warranties
  • Handover protocol at every build stage
  • H&S consent for every worker on site
  • Main works contract with the client (project owner)
  • Defect protocol for warranty claims

Why digital signing works on a construction site

A subcontractor works directly on site — they have no time to drive to the office to sign a paper contract. With zipzipdoc they receive the contract on their phone, confirm with an OTP and sign. The whole process takes 3 minutes and requires no travel.

Site management has a real-time view of who has signed and who has not.

Handover protocol without paper

When taking over each phase (shell, facade, interior works) the site manager opens zipzipdoc on a tablet, documents the condition, and both parties sign digitally on the spot. The protocol is immediately stored and linked to the project.


Related contract types: Subcontractor agreement · Service agreement · Service agreement

Numbers that speak for themselves

| Statistic | What it means | |---|---| | 22 contracts | average number of documents on a mid-sized construction project | | 5 days | average delay in signing a works contract | | 1 hour | to sign with zipzipdoc | | | fewer disputes with subcontractors |

How it works step by step

Step 1: The site manager receives a contract.

Step 2: Opens zipzipdoc, generates a works contract with the investor, defines payment milestones and handover protocols.

Step 3: Subcontractors receive their own contracts for online signing.

Frequently asked questions

What must a construction works contract include?

The contract must include description of works, completion date, price and payment terms, liability for defects, scope-change conditions and handover protocols.

Can I sign a handover protocol via zipzipdoc?

Yes. A handover protocol can be created as a standalone document or amendment to the contract. Both parties sign online.

How do I handle payment milestones for long projects?

The works contract includes a payment schedule section. Define milestones (e.g. shell construction, roof, final inspection) with corresponding payments.

“Subcontractors sign contracts within 24 hours of being assigned. The project runs on schedule.” — Walter H., site manager

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Frequently asked questions

The contract must include description of works, completion date, price and payment terms, liability for defects, scope-change conditions and handover protocols.
Tool comparison

How does zipzipdoc compare to alternatives?

See a detailed comparison with popular e-signature tools.

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