In visit-based supervision, the engineer is not on site every day but visits at set stages to check the work before the next stage begins: before pouring foundations, before pouring each slab, before plastering, and before insulation is covered. It is the most common choice for villas and medium-sized buildings because it balances cost and quality. But its success depends on one thing: visits must be tied to critical stages, not random days, and the contractor must not proceed without acceptance. This guide explains the regulatory framework, how visits are scheduled, when this arrangement is enough and when it is not, and how to make sure it is effective.
The Regulatory Framework
According to the description of the building permit service on Balady, after the design is approved the design office designates the supervising office and then the building contractor, and each party is notified to accept the assignment. For new permits, the occupancy certificate is issued through the supervising office after it has finished submitting the construction reports (construction notices). Read: Project management and engineering supervision.
How Are Visits Scheduled?
Visits are not a fixed random number but are tied to critical stages, including:
| Stage | What is accepted |
|---|---|
| Excavation and replacement | Levels and compaction. Read: Excavation, replacement and levelling |
| Foundations and necks | Reinforcement, dimensions and waterproofing before pouring and backfilling |
| Columns and slabs | Reinforcement and formwork before each pour |
| Services | Electrical and plumbing before plastering |
| Waterproofing | Roof and bathroom waterproofing before covering |
| Finishes | Conformity to specifications and approved samples |
| Handover | The snag list and documents |
Read: Stages where pouring is not allowed without the supervisor.
When Is Visit-Based Supervision Enough?
- Medium-sized residential projects.
- An organised contractor who reliably notifies the supervisor before each stage.
- An owner who follows up regularly.
And When Is It Not Enough?
Large or complex projects, or those with daily pours, need a constant presence. Read: The resident engineer: when is one necessary? and Supervision cost: visits or resident?.
How to Make Sure It Is Effective
- A clause in the contractor's contract prohibiting pouring without the supervisor's acceptance.
- A documented report with photographs after each visit. Read: Contents of supervision reports.
- A fast communication channel between contractor and supervisor.
- Notifying the supervisor well before the appointment.
- A copy of the reports to the owner after each visit.
Responsibilities of the Parties
| Party | Responsibility |
|---|---|
| Contractor | Building to the drawings, and notifying the supervisor before each stage |
| Supervisor | Inspection, acceptance, documentation and rejecting non-compliant work |
| Owner | Approving decisions on time and not bypassing the supervisor |
Read: Supervisor and contractor responsibility.
Frequently Asked Questions
How many visits are there?
It is set by the project's stages and size; what matters is tying them to the critical stages.
What if the contractor pours without notifying the supervisor?
That breaches construction safety; additional testing or rework may be needed, and the contract should prevent it.
Can visits and a resident engineer be combined?
Yes, for example a resident during intensive structural stages and visits during finishes.
Can I follow the visits from outside the city?
Yes, through photographed reports. Read: Following a project remotely.
Does visit-based supervision replace the owner's follow-up?
No, the owner reading the reports and making timely decisions is part of success.
How Abak Engineering Consultancy Helps
Abak is an accredited engineering office in Riyadh that provides visit-based supervision tied to critical stages, with photographed reports after each visit and regular construction notices through to the occupancy certificate. See our visit-based supervision service, or contact us.
Regulatory information is based on the Balady platform and the Ministry of Municipalities and Housing, and procedures may be updated by the competent authority. Last reviewed: October 2026.