How to Create a Construction Budget

A construction budget is one of the most important for managing a successful construction project. Any time you’re planning to construct a home, office building, industrial facility, or public building, you should have a budget that will help you keep costs in check and eliminate unexpected expenses.

There are many costs associated with construction jobs, such as labor, materials, equipment, permits, subcontractors, and overhead costs. Project owners and contractors can easily face cash flow issues, delays, and cost overruns without a detailed budget. A good construction budget is a financial guide along the way of a construction project. It assists stakeholders to allocate resources, track expenditure, obtain funding, and to make informed decisions from project conception to completion.

Step 1: Define the Project Scope

A project scope should define the following:

If the scope is not well-defined, it can result in budget overruns and disputes.

Step 2: Plan and Specifications Review

Carefully analyze all project documents before preparing a budget. Review:

The more specific the review, the more precise the budget will be.

Step 3: Create a Work Breakdown Structure (WBS)

A Work Breakdown Structure (WBS) is a way of breaking down a project into manageable parts.

Common categories of WBS are:

A WBS has the following advantages:

Step 4: Perform Quantity Takeoffs

The amount of material, labor, and equipment needed on the project is the result of quantity takeoffs. Material takeoffs can include the following:

Precise quantity takeoffs minimise waste and enhance budget accuracy. Accurate quantity takeoffs are part of preliminary estimating services, helping contractors and project owners develop reliable budgets during the early planning stages of a project. 

Step 5: Estimate Material Costs

The prices of materials should be based on the current market prices. Common materials include:

Material costs may vary significantly, so it’s a good idea to get up-to-date quotes from materials suppliers before committing to a budget.

Step 6: Estimate Labor Costs

Labor is one of the greatest costs of a project. Labor calculations should be made with the following in mind:

Remember the cost of labour burden includes:

Step 7: Determine Equipment Costs

Equipment costs can consist of:

Consider:

These costs can have a major impact on the total cost of the budget.

Step 8: Include Subcontractor Costs

Most projects are dependent upon specialty subcontractors. Common subcontractors include:

When possible, get several quotes to make sure you’re getting a competitive price.

Step 9: Add Permit and Regulatory Fees

Permits and inspections are often necessary for many construction projects. Potential fees include:

Not paying the permit fee can lead to future “unexpected budget problems”.

Step 10: Add Overhead Expenses

Indirect business costs should be included in project budgets. Examples include:

Such costs are often divided as a percentage of the project’s total cost.

Step 11: Add Contingency Funds

Typically, construction projects don’t run as smoothly as they are designed. Common risks include:

Between 5% and 15% is typical of the amount that most contractors allow as a contingency charge. Larger reserves may be necessary for high-risk projects.

Step 12: Include Profit Margin

Profit should be added before finalising the Budget. The amount of the contractor markup can vary depending on:

Step 13: Create the Final Budget

After all of the costs have been determined, put them together in a final budget document. The final budget should consist of:

The budget should be reviewed thoroughly by the stakeholders before its approval.

Key Components of a Construction Budget

There are various big cost categories in a Construction Budget:

Direct Costs

These include costs that are associated with the construction activities, such as:

Indirect Costs

These help project operations but do not necessarily have a specific project task; for example:

Hard Costs

Hard costs are costs associated with physical construction activities, such as:

This is normally the highest budget item.

Soft Costs

Soft costs include all costs related to the project, other than construction costs, which occur before and during project construction, such as:

Overhead Costs

These are the recurring costs of the business and include:

Profit is added to business risk to earn revenue for contractors. Profit margins are typically between 5% and 20%, and this can vary from project to project.

Contingency Reserve

A contingency reserve is intended to deal with unanticipated costs, including:

The average contingency for most projects is between 5% and 15% of the total project budget.

Construction Budget Formula

The basic construction budget formula is: Example Calculation

Suppose that a project has:

This formula provides a simple framework for building a complete project budget.

Sample Construction Budget Breakdown Table

Example Residential Construction Budget

Cost Category	Estimated Cost
Site Work	$15,000
Foundation	$25,000
Framing	$50,000
Roofing	$12,000
Plumbing	$15,000
Electrical	$18,000
Interior Finishes	$40,000
Contingency	$15,000
Total Budget	$190,000

This example illustrates how individual costs combine to form a complete project budget.

How to Create a Construction Budget in Excel

If you need to create a construction budget in Excel, there are some steps that you can follow. One of the most popular budgeting tools is Excel due to its price and flexibility.

Required Columns

The following items should be contained in a construction budget spreadsheet:

Advantages of Excel Budget Templates

Benefits include:

Many small contractors are able to undertake projects with Excel without needing to invest in specialised software.

Forecasting Remaining Costs

Forecasting is the process of estimating the total cost of the project at the end of the project, based on the spending and progress on the project so far. It enables the project manager to be aware of any potential budget problems early.

Cost Reporting

Stakeholder information is delivered on a regular basis by way of cost reporting. Common reports include:

Monthly Budget Reviews

It is important to review monthly:

How to Keep a Construction Project Within Budget

1. Budget Tracking

Budget vs. Actual Cost Tracking

You can do this by comparing what you actually spend with the budget:

A lot of contractors check on costs on a weekly or monthly basis.

Committed Costs Tracking

Committed costs are approved expenses that have not yet been paid, such as:

These costs can be tracked to get a better sense of the project’s finances.

Forecasting Remaining Costs

Forecasting is the process of estimating the total cost of the project at the end of the project, based on the spending and progress on the project so far. It enables the project manager to be aware of any potential budget problems early.

Cost Reporting

Stakeholder information is delivered on a regular basis by way of cost reporting. Common reports include:

Monthly Budget Reviews

It is important to review monthly:

2. Change Orders

One of the main causes of budget overruns is due to change orders, and they need to be managed carefully.

Common Causes of Change Orders

Typical causes include:

Approval Process

All change orders should include the following:

Updating the Budget

If a change has been approved, then it should be immediately reflected in:

Change Order Costs Tracking

Keep track of change orders and report back to:

This will help produce correct financial reporting and profitability analysis.

3. Risk Management

There are various sorts of risks that are involved in building tasks, which could result in delays and increased costs.

Material Price Increases

Varying amounts of material can be used, and costs can vary greatly. Reduce risk through:

Labor Shortages

Labour shortages can result in an increase in wages and a decrease in productivity. Mitigation strategies include:

Weather Delays

Adverse weather can impact schedules and budgets. Consider:

Design Changes

Expensive changes in the design take place at the end of the design process. Minimize risk by:

Site Condition Issues

Delays and additional costs can occur if site conditions are not as expected. Conduct:

Supply Chain Disruptions

Project schedules may be impacted due to materials shortages or shipping delays. Reduce risk through:

4. Cash Flow Planning

Cash flow planning means that the money is there when needed and doesn’t create a problem with money. Some of the main cash flow costs are:

Best practices include:

5. Cost Reduction Strategies

What Does Value Engineering Mean?

Value engineering is a process that uses cost as a means of enhancing the project’s quality and performance without sacrificing any value.

Cost-Saving Opportunities

Potential areas include:

Material Alternatives

They can be supplied at a reduced price without compromising the performance, such as:

Efficient Construction Methods

Modular construction, prefabrication, and lean construction are some of the techniques that can lead to increased productivity and cost savings.

Design Optimization

By optimizing designs, less material, less labor, and less equipment may be used.

Common Construction Budgeting Mistakes

Stay away from these common budgeting mistakes:

Underestimating Labor Costs

Take into consideration overtime, training, breaks, and weather delays.

Ignoring Material Waste

Accept some scrap of drywall, lumber, roofing, concrete, etc.

Forgetting Soft Costs

Consider fees and expenses like permits, designer, legal, and inspection fees.

Using Outdated Pricing

Use up-to-date labour and material costs.

Inadequate Contingency Funds

Have sufficient money for unexpected expenses.

Failure to have Change Order Management

Be sure to monitor and record project changes appropriately.

Absence of Cost Tracking

Routine checks can help pinpoint problems before they get out of hand.

Best Construction Budgeting Software

1. Procore

Perfect for medium and large projects, with budget tracking, forecasting, and reporting features.

2. Buildertrend

Easy for homeowners to budget, schedule, and communicate with their contractors.

3. CoConstruct

Custom home builders and remodelers, project management, and budget tracking software.

4. Smartsheet

Provides budget templates and dashboards, as well as collaboration features.

5. Microsoft Excel

An adaptable and budget-friendly solution to build and monitor construction budgets.

Tips for Keeping a Construction Project on Budget

Work from good estimates and quantity takeoffs.

Conclusion

One of the most critical considerations to make in the success of a construction project is to create a construction budget. A well-developed budget can help manage costs, allocate resources, find financing, and increase profitability. Contractors and project owners can create a budget that is as precise as possible by establishing the project scope, reviewing plans, conducting accurate quantity takeoffs, and adding contingency reserves.

But budgeting is not over once the building construction starts. Not monitoring the costs, managing cash flow, controlling change orders, and performing periodic budget reviews are critical to holding projects to their budgets. 

Frequently Asked Questions

Q. How Much Contingency Do You Need in The Construction Budget?

Typically, the contingency amount is between 5% and 15% of the overall project. Larger reserves may be warranted for higher-risk projects.

Q. What Is the Difference Between a Construction Estimate and A Construction Budget?

An estimate is the best estimate of costs before construction, and a budget is the formal financial plan that is approved and used to control project spending.

Q. When Should the Construction Budget Be Adjusted?

Budgets need to be constantly monitored and adjusted during the construction process. Updates of the project are often done weekly or monthly, depending on the size of the project.

Q. What Are the Main Reasons for Budget Overrun?

Some of the most frequent are cost changes, failure to estimate, cost overruns in materials, labor shortage, weather delays, and poor cost tracking.