Quelles sont certaines des meilleures pratiques pour estimer les coûts de main-d’œuvre dans les métiers spécialisés?

For accurate labor cost estimates in specialty trades, start by breaking down tasks to assess time and skill requirements precisely. Use historical data from past projects and adjust for complexity, location, and market trends. Factor in crew size, skill levels, and productivity rates, considering any potential delays due to weather, equipment, or access limitations. Regularly update labor rates to reflect current wage trends and certifications. Include buffer time for training or safety measures if needed, and communicate with trade experts to validate assumptions, ensuring realistic and comprehensive estimates.

For specialty trade labor estimates, start by detailing each task’s time, skill, and tool requirements. Use historical data from similar projects, adjusting for complexity, location, and current labor market rates. Consider crew size, skill level, and realistic productivity rates, accounting for site conditions that may impact efficiency. Regularly update wage data for specialized trades to ensure accuracy, and build in buffers for training or safety requirements. Consult with trade experts to validate your assumptions and refine estimates, ensuring they are as realistic and detailed as possible.

It is imperative to transparently document the assumptions and rationale underpinning the chosen contingency rates. This documentation serves as a vital reference point for understanding the considerations that influenced the contingency decision-making process. Additionally, as the project advances, it is advisable to regularly revisit and update these contingencies to align them with any new information or developments that may arise. By adopting a thoughtful and well-documented approach to contingencies, project stakeholders can better navigate uncertainties and enhance the overall accuracy and reliability of labor cost estimates.

There are other ways too. Simply depending on the subcontractor bids will not be that useful. It's normal practice of most of the contractors to bid such a price that includes their overheads and profit margin. I believe the following steps can be useful: 1. Understand the job and analyse the labor factor involved, 2. Instead of inviting bids from subcontractors, try advertising or find the specific trade personnel. Doing this you can get to know pure labor cost without inadequate overheads. 3. Visit the sites where the similar kind of work was done and is currently operational. This will give you an idea of the work components. 4. Approach companies who deals in specific trade and get the cost of hiring that special trade labor.

Certainly, your proposed steps provide a more comprehensive approach to understanding and estimating costs for a construction project. Here's a modified version: 1. Job Analysis and Labor Factor Assessment 2. Direct Hiring vs. Subcontractor Bids 3. Site Visits for Comparative Analysis: 4. Trade-Specific Cost Analysis 5. Benchmarking and Industry Standards 6. Incorporate Historical Data 7. Risk and Contingency Planning 8. Collaborative Cost Reviews By incorporating these steps, you can create a more robust and informed cost estimation process for your construction project.

I once started a senior estimator job where I developed my estimates based on both my knowledge and appraisal/cost estimate of the proposed work, in tandem with the specialty trade bids, as I have always done, and recommend that any estimator does. When all bids were reviewed and 'leveled,' I issued my estimate to my superior who was annoyed because he expected me to simply use the bids without my own calculations. My comment was "then why would you hire me or anyone else as an estimator?"