Singapore BIM Guide for Contractors

Contractors play a critical role in making BIM deliverables useful on the ground. From planning work sequences to tracking progress and coordinating trades, BIM can make a big impact on site productivity—if implemented well.

While architects and consultants often drive the initial model, it’s the contractor who deals with its reality. That’s why more and more contractors in Singapore are investing in BIM—not just because it’s required, but because it’s practical.

BIM, or Building Information Modeling, is more than 3D visuals. It includes data about dimensions, materials, construction sequencing, and asset information. When used effectively, it reduces rework, improves communication, and supports faster, smarter construction.

BIM LOD for Contractors

LOD—Level of Development—is about how much detail each model element contains. Contractors typically work with:

• LOD 300 during tender and coordination
• LOD 350–400 for shop drawings and construction
• LOD 500 for as-built delivery

Using the right LOD helps avoid unnecessary detailing while still delivering accurate and useful information to subcontractors. For a full breakdown, check out our BIM LOD guide.

Benefits of BIM (for Contractors)

1. Site Coordination and Clash Detection

BIM helps you avoid surprises on-site. Before pouring concrete or running ductwork, contractors can review the coordinated model to check for conflicts. This allows issues to be resolved virtually before they become costly mistakes.

We often use tools like Navisworks or ProjectWise to run clash checks and manage issue resolution through ICE meetings or on a rolling basis. Learn more about that here.

2. Quantity Take-offs and Cost Control

When models are structured correctly, contractors can extract quantities directly. This speeds up cost estimation, reduces human error, and links better with procurement workflows. Even for lump-sum projects, this improves internal controls.

Using BIM for quantities also helps subcontractors price more accurately, especially when scopes are complex or integrated (e.g. MEP services in tight ceiling spaces).

3. Regulatory Submissions and Revisions

With the rollout of CORENET X, BIM-based submissions are increasingly the norm. Contractors may not be the primary submitters, but they still need to ensure that their shop drawings and BIM models align with what was approved.

Being able to navigate and revise the BIM model helps reduce delays when inspectors or QPs ask for clarification or updated documentation.

A deeper look at regulatory workflows can be found in our comparison of CORENET X vs CORENET 2.

4. Digital Handover and As-builts

As clients expect smarter buildings, contractors are being asked to deliver BIM models not just for construction, but for FM and lifecycle management. That includes:

• Updating the model to match site conditions
• Adding tag numbers, manufacturers, and warranty data
• Exporting IFC or COBie files

Architects and clients may request a complete as-built model at LOD 500, which includes all changes made during construction. By ensuring that manufacturer data and installation details are captured, contractors help clients manage their assets more effectively.

5. Progress Tracking and Site Logistics

Contractors can use 4D BIM to simulate construction sequences, plan site logistics, and track actual vs planned progress. Tools like Synchro or Navisworks Timeliner are commonly used here. While not always contractually required, they’re increasingly seen as good practice.

Tools for BIM Coordination on Site

All of these tools work better when there's a clear BEP and naming convention in place. If you're a main-con or EPC firm, make sure you're either involved in shaping the BEP or reviewing it thoroughly.

How to Get Started with BIM

If you're new to BIM, or only using it on select projects, here’s a path forward:

1. Review the BEP – Understand the LOD, software, and submission requirements.
2. Appoint a BIM lead – Even if outsourced, someone needs to coordinate internally.
3. Use a Common Data Environment (CDE) – This ensures model version control, tracking, and centralized access.
4. Partner where needed – Firms like Bimeco offer BIM services for contractors, from 3D modeling to clash checks to as-built updates.

Need Help?

Whether you're bidding for a BIM-required tender or simply want to improve site coordination, we can help. From BEP interpretation to BIM model updates, we offer practical support tailored to the contractor’s role.

Use our BIM Cost Calculator to estimate costs, or reach out to us directly to discuss your project.