As you probably know, one of the most important elements of project planning is the correct estimation of its costs. The expenses forecast is very important and must be done carefully, but it should not be treated as one hundred percent true oracle. Specialists in the field of project management note that many projects exceed the assumed budget precisely because company managers blindly believe in the perfection of the budget forecast. So remember that when creating a project budget, you must assume that it is only estimated approximately, and the project budget can increase anytime. Do you know the basic rules of estimation? Or perhaps you’re making the same mistakes all over again and want to learn from your them? Which solutions will actually make your life easier? Read on!
Estimation by analogy
This is a solution for those that want to learn from errors. This estimation variant means that you’ll be analyzing and comparing the project to the actual costs incurred in similar projects in the past. The analysis is treated as a new base for estimating costs in a new project. This is one of the forms of an expert assessment, which is often used to determine the total cost of a project in its early stages. During the analysis, similar projects implemented by other companies in the industry may also be taken into account. If you choose to use an analogy, the cost estimation will be faster and easier.
Estimating with parameters
If you’re dealing mostly with construction projects, you probably use this method. Parametric modeling is a cost estimation based on project parameters, like
project scope, cost and time. This is the most commonly used method in construction. Such models can be based on many other kinds of cost estimates. The input parameters of this technique are, for example, room volume, number of electrical points, and many more. In more complex projects, you can build more elaborated models.
Bottom-up estimation
The method consists of estimating the costs of individual actions that are necessary for the execution of the project and then calculating the total costs. The effectiveness of this technique strongly depends on the correctness and accuracy of planning activities necessary to implement the project. You have to be very precise. If you can, you can add some analogy techniques for more certainty.
Modern technologies
The most important document defining the construction costs is the construction project. On the basis of tasks that are necessary to do an exact description of materials, you can calculate their price, and then also estimate the costs of construction. It is worth taking into account the individual requirements, like minimal gross margin, an average value of materials and other analytical information. To make it simpler, you can use a construction estimating software that will remember your previous choices and make the whole process faster. With such a smart managing system, you’ll be able to analyse the present distribution of costs and check if you’re not going over the limit. Use the statistics for your success!
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