Have you dreamed of building a home? Do you wonder what it might cost?  Certainly, every home is different but there are some things to keep in mind as you think about building a custom home.

What Determines the Cost of Your New Home?

Building a home is an exciting journey – and understanding what drives cost helps you make smart decisions from the start. Several key factors influence your final price, and each one plays a unique role in shaping both your budget and your finished home.

1. Square Footage & Design Efficiency

Square footage affects cost, but how the space is designed matters just as much as the size itself. A well-planned layout can feel larger, function better, and cost less than a poorly designed plan with the same footprint.

Types of Square Footage That Affect Cost

  • Interior Conditioned Area
    Heated and cooled living space measured from the outside face of the stud.
    Does not include: two-story open spaces, vaulted rooms, garages, unfinished bonus rooms, or porches.
  • Unused or “Wasted” Space
    Areas under the roof that aren’t usable floor space – such as unfinished bonus rooms or space above trey ceilings.
  • Interior Unconditioned Area
    Garages, unfinished basements, storage rooms, and utility spaces.
  • Exterior Covered Areas
    Covered porches and decks.
  • Exterior Uncovered Areas
    Open decks and patios.

2. Lot Requirements

Your lot can significantly impact construction cost. Factors include:

  • Setbacks and neighborhood restrictions
  • Slope and excavation needs
  • Soil types and conditions – is there likely to be rock on your lot?
  • Utility access
  • Drainage requirements
  • Driveway length etc.

A challenging lot can add time, labor, and materials – all of which affect your budget.

3. Shape & Complexity of the Floor Plan

The simpler the shape, the more cost-efficient the build.

  • Box-shaped homes are typically the least expensive.
  • Every additional angle, bump-out, or roofline change increases labor and materials.
  • Two-story homes often cost less per square foot than one-story homes of the same size because the foundation and roof are smaller.
  • Larger footprints generally cost more to build.
  • The old adage that it is cheaper to build up than out is often true.

4. Exterior Finishes

Your exterior materials influence both aesthetics and cost.

Typical cost range (lowest → highest):
Vinyl → Concrete/Hardie → Brick → Stone

Other considerations:

  • Lap siding is more affordable than shake siding.
  • Porches add beauty and function but are not included in most square-foot calculations.
  • Wood accents such as beams and pergolas are beautiful but add costs.
  • Metal roofs are significantly more expensive than asphalt shingle roofs.

5. Foundation Type

Your foundation is one of the biggest structural cost drivers.

  • Slab: Most affordable but not ideal for every lot or climate. We have also found that slabs just aren’t comfortable on backs as we age.
  • Crawl Space: Typically more expensive than a slab but less than a basement.
  • Basement: Adds valuable space at a lower cost per square foot.
    We strongly recommend poured concrete walls over block for strength, moisture resistance, and long-term durability.

6. Interior Finishes

Your interior selections have a major impact on your final price.

Some cost drivers include:

  • Flooring materials
  • Trim and molding levels
  • Cabinetry and countertops
  • Tile and Tile design
  • Appliance packages
  • Fireplace type
  • Custom features and upgrades
  • Paint and stain levels
  • Closet complexities

Even small upgrades can add up across an entire home.

We hope this has given you some insight and we know you may also have more questions now that you have thought in more detail about building a home.  Stay tuned to this blog or reach out to us if we can help you as you evaluate plans, lots, etc.