In some projects scheduled visits are not enough, because decisions, pours and works happen every day and in parallel on several fronts. A tower pouring a slab every week, a factory with five contractors working at once, or a deep basement next to existing buildings cannot have the contractor waiting for the supervisor's visit, nor a day go by without oversight. This is where a resident engineer becomes a necessity, not a luxury. This guide explains when a resident engineer is necessary, what they add, the limits of the role, how it compares with visits, and how to choose one.
When Is One Necessary?
- Large projects: towers, complexes and large buildings with successive pours. Read: The towers requirements guide.
- Industrial projects: steel frames, industrial floors, coordination with equipment, and monthly construction follow-up in MODON. Read: Supervising factory construction.
- Multiple contractors and the need for daily coordination.
- A tight schedule with no room to wait for a visit.
- Sensitive works: deep excavation next to buildings, and shoring. Read: Excavation shoring.
- Off-plan projects tied to progress reports and payments. Read: Supervising Wafi projects.
What Do They Add?
- Immediate acceptance of works without stopping construction.
- Catching mistakes before they accumulate.
- Daily documentation that supports the owner in any dispute.
- A fast link with the designer to solve site problems.
- Continuous control of incoming materials.
For their daily duties in detail: The resident engineer's daily duties.
Quick Comparison
| Case | Visits | Resident |
|---|---|---|
| A villa or medium building | Usually suitable | Not usually needed |
| A tower or complex | Not enough | Necessary |
| A factory with several contractors | Not enough | Usually necessary |
| A deep basement next to buildings | Risky | Necessary during excavation and shoring |
Read: Visit-based supervision.
Limits of the Role
The resident engineer does not manage the contractor's works or bear its execution responsibility, but verifies compliance. Read: Supervisor and contractor: the limits of responsibility.
For cost: The cost of visit-based supervision compared with a resident engineer.
How to Choose a Resident Engineer
- Experience in the project type: towers, industrial, infrastructure.
- Ability to read all disciplines, or backing from a multidisciplinary office team.
- Discipline in documentation and reporting.
- A firm character that rejects non-compliant work without unjustified delay.
Frequently Asked Questions
Does every tower need a resident engineer?
Usually yes, because of the volume and sequence of works; it is decided in the project study.
Can the engineer be resident part-time?
Yes, at critical stages such as the structure, with visits at other stages.
Is one engineer enough for a large project?
The project may need a team: structural, electrical and mechanical, depending on size and stage.
Who pays the resident engineer?
Usually the owner under the supervision contract, and the engineer represents the owner's interest, not the contractor's.
Does a resident engineer shorten the project?
Often yes, because it avoids waiting for acceptance and finds problems early.
How Abak Engineering Consultancy Helps
Abak is an accredited engineering office in Riyadh that provides experienced resident engineers for large and industrial projects, with technical backing from the office team and daily and weekly reports to the owner. See our resident engineer 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.