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How to Estimate New Home Construction Costs

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Building a new home is an exciting adventure,  however, the most important thing one can do is calculate the costs of building accurately. Over-expenditure, poor project scheduling, or running dry of funds midway can be experienced if proper estimations have not been made. All this includes detailed analysis which is done with respect to cost-influencing factors - material, labor, and design, amongst others.


Cost estimation will help maintain the project well within its budget and also enable proper decisions regarding materials, labor, and designs. Many contractors use construction takeoff services to know the exact quantities of materials and labor hours. Then, they add the cost of materials by getting prices from local vendors and local labor rates.

1. Cost Breakdown 

The building of a house includes different interlinked expenses. Dividing them into comprehensible units enables you to draft an appropriate, detailed budget. Here's an overview of those aspects:

1.1 Location

Location in urban areas usually increases labor and material costs and fees to be paid on permits since people are always keen on living there. In contrast, the cost is relatively lower in rural areas but incurs additional costs in transportation to ferry the materials and the laborers to and fro.

  • The construction cost in the urban area will be 20-50% higher than that because of high demand, high property prices, and high labor costs.
  • Rural Areas construction costs here would go down by 10-20%, but investment might become more intensive for the developmental work of land and transporting construction material.

1.2. Land Cost

Land cost is determined by the location, size, and zoning requirements of the land. Generally, plots in urban areas are more expensive than those in suburban or rural areas. In addition to the base cost of the land, other costs involved while purchasing land include:


Site Preparation

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Pre-construction site preparation involves tree removal, grading, and leveling of the soil. These costs can vary between $2,000 and $10,000 depending on the nature of the land.


Testing and Surveys of the Soil


This involves testing the soil to check its stability before the house is constructed. It costs between $500 and $2,000. This type of survey helps discover risks such as sinkholes or poor drainage in advance.

1.3. Architectural Design and Permit

Your house design affects how your house looks and functions, but permits are required to get by the local regulations.


  • Architectural Fees: Architects charge between 5-15% of the project cost for custom designs. Pre-designed plans are less expensive options.
  • Permit fees: local governments charge for building, electrical work, plumbing, and zoning permits, as well as other permit fees. The cost for each of these types of permits varies but will be between $500-$2,500 and maybe more if additional inspections must take place.

1.4. Home Size

The price of your house is equal to the size of the house. The more square feet that must be built, the more materials and additional labor will be required when building it. Also, the more complex the design, the more it costs per square foot.


  • Basic: $100-$150 per square foot
  • Mid-range: $150-$250 per square foot
  • High-end: $250 to $500 per square foot, or more

1.5. Material Selection

The quality of the material you choose will be quite determinant to the construction cost. From siding and roofing to flooring and countertops, this is where your choices are going to determine how much you'll pay for that house.


  • Basic material: Vinyl siding, laminate countertops, basic flooring (carpet or standard tile) in the range of $100 - $150 per square foot.
  • Mid-range Materials: Wood or composite siding, granite countertops, and hardwood floors will run between $150 - $250 per square foot. 
  • High-end Materials: Stone or brick siding, marble or quartz countertops, and high-end custom woodwork drive the price up to $250 - $500+ per square foot.

1.6. Landscaping and Exterior Features

The last step of the construction process is an appealing and useful exterior. These appear curbside appealing; however, they also promote usability and value.


  • Concrete driveways range from $4,000 to $10,000 depending on the size and complexity.
  • Landscaping is adding plants, trees, and sod to a home's yard, giving it curb appeal. This can easily range between $5,000 and $20,000.

1.7. Installing Utilities

Utility hook-up ensures that the necessary services such as electricity, water, and sewage are provided to your property. This usually varies with location and infrastructure.


  • Electricity and Water: utility line installation cost ranges between $5,000 to $20,000, depending on distance from the grid and terrain
  • Septic System installation: if your area doesn't have sewer systems, the cost is in the range of $3,000 to $7,000.

1.8. Labour Cost

The cost of labor is variable depending on the task: whether it is general labor or special trade, and regional labor rates. Generally, electricians, plumbers, and air conditioning technicians tend to command higher rates than general laborers. 

  • General labor- labor costs $20-$40 per hour while that of skilled laborers- plumbers, electricians, etc- is between $50 and $150 per hour.  Labor accounts for between 30% to 40% of the project's cost.
  • For a medium-range priced house at $300,000, labor may cost between $90,000 to $120,000 depending on how difficult it is to build and area/region.

1.9.  Adding Contingency

No matter how well you plan, the costs of construction sometimes surprise you along the way. A contingency budget is a safety net that financially allows you to fix problems without stopping the project. It usually suggests having 10-15% of the overall budget in such a fund.

2. Construction Cost Estimating Methods

Once you get accustomed to all the things that go into building a home, you will then need to choose which method will suit your needs for estimating expenses. There are several ways to estimate home construction expenses, and each has different degrees of accuracy and complexity.

2.1 Square Footage Method

The square footage method is perhaps one of the simplest cost estimation methods that most use during construction. This is derived by multiplying the total square footage of your house by the cost per square foot.


  • For instance, using a national average of $150 for each square foot in the construction of your house, 2,500 square feet translates to:
  • 2,500 sq. ft × 150  per sq. ft = $375,000.

2.2. Cost per Room Method

On some occasions, it will be more effective to estimate construction costs in terms of number of rooms in your home. This approach may favor small homes where rooms will be equally sized. You can estimate the construction cost for individual rooms such as bedrooms, bathrooms, and living spaces.

  • For instance, if one estimates that the putting up of a bedroom would cost $25,000 and you want to have four bedrooms, then the total for bedrooms would be:
  • 4 rooms × 25,000 = 100,000

2.3. Itemized Estimated Method

For a rough estimate in more depth, there is the itemized method of breaking down the construction cost into individual components such as framing, roofing, plumbing, and electrical. It is usually applied by contractors wherein each part of the project is itemized for more clarity.

  • For example, the framing may cost $30,000, the roof $15,000, plumbing $20,000, and electrical work $10,000. All these add up to a much more accurate estimate of the overall project.

2.4. Software Tools

Several software tools are available that homeowners and contractors can use to estimate construction costs. These tools rely on databases of material prices, labor rates, and other construction factors to provide a detailed cost estimate for homebuilding projects.

Final Summary

Estimation of costs for a new house calls for a very clear explanation of all the variables. The location, size, type of materials, and labor will sink a great hole in your budget. Surprise costs are possible at any time. Now break each component into construction, material, labor, permit, site preparation, and contingency so that you have all the components to put together your complete budget. 


Land cost and landscape plus utilities should also not be forgotten. In the following manner, by thorough planning and research work, the better would you be able to estimate more accurate costs of your new house construction so that you won't hit a financial pit.

author

Chris Bates