The Ins and Outs of Buying Infill Land: What You Need to Know Before Building a Home

Infill land can present an exciting opportunity for buyers, builders, and real estate investors. A vacant parcel tucked between existing homes may offer the chance to build a new construction home in an established neighborhood without having to move farther away from the conveniences of an existing community.

But there is an important distinction every buyer should understand:

A vacant lot is not automatically a buildable lot.

Before purchasing infill land with plans to build a home, proper due diligence is essential. Zoning, setbacks, utilities, easements, topography, soil conditions, access, drainage, previous land uses, and even the dimensions of the lot can dramatically affect what can be built—and how much the project ultimately costs.

What Is an Infill Lot?

Infill development generally refers to developing vacant or underutilized property within an already developed or built-up area. The U.S. Environmental Protection Agency’s Smart Growth resources describe infill development as development occurring within existing built-up neighborhoods, often where infrastructure, transportation, homes, and businesses are already present.

Think of an older neighborhood with houses on nearly every parcel except for one empty lot. That vacant parcel may be an infill opportunity.

The location can be highly attractive because buyers may gain access to established roads, shopping, employment centers, schools, utilities and neighborhood amenities while still having the opportunity to construct a brand-new home.

However, the fact that homes already exist around the property does not guarantee that your intended home can be constructed on the vacant parcel.

1. Start With Zoning—Not the House Plans

One of the biggest mistakes buyers can make is choosing a house plan before determining what the land will legally accommodate.

Before purchasing an infill lot, investigate the property's current zoning and permitted uses. Important questions include:

• Is a single-family residence permitted?
• What are the minimum lot-width and lot-size requirements?
• What are the front, rear and side setbacks?
• Is there a maximum building height?
• What percentage of the lot can be covered by structures?
• Are accessory dwelling units, garages or detached structures permitted?
• Are there overlay districts or special development standards?

Land-use regulations vary by jurisdiction, making verification with the appropriate local planning and zoning authority essential.

A seemingly inexpensive lot can become significantly less attractive if zoning requirements reduce the usable building envelope.

2. Understand the Building Envelope

The acreage or square footage shown in a listing doesn't necessarily equal the amount of land available for your house.

Imagine purchasing a narrow lot and then discovering that required side setbacks leave insufficient width for the home you intended to build.

Your building envelope can be affected by setbacks, easements, rights-of-way, buffers, streams, flood zones, utility corridors, drainage areas and other restrictions.

Before committing to a particular home design, determine where the house can legally and practically sit on the property.

3. Get a Survey and Research Easements

A current survey can be one of the most valuable pieces of information when evaluating infill land.

A survey may help identify property boundaries and improvements, while additional title and property research may reveal easements or rights affecting the parcel.

Look carefully for:

Utility easements: Electric, water, sewer, gas or telecommunications infrastructure may cross the property.

Drainage easements: These may restrict construction in certain areas.

Access easements: Another property may have rights across a portion of the land.

Rights-of-way: The usable front portion of the property may be different from what appears visually from the street.

The goal isn't simply to determine how much land you own. You need to understand how much of that land can actually support your intended project.

4. Never Assume Utilities Are Available

One of the attractions of infill development is that these properties are often located near existing infrastructure. But "nearby" does not necessarily mean your property is connected—or that connecting will be inexpensive.

Determine the availability and potential connection requirements for:

• Public water
• Public sewer
• Electricity
• Natural gas, if desired
• Internet/cable
• Stormwater infrastructure

Ask whether taps already exist, whether capacity is available and what connection, impact or system-development fees may apply.

If public sewer isn't available, determine whether the property can support a septic system. If municipal water isn't available, investigate well requirements.

These questions should be answered before purchasing the land whenever possible—not after closing.

5. Study the Soil and Topography

A beautiful, level-looking lot can still hide expensive construction challenges.

Soil characteristics can affect drainage, foundations, septic suitability and overall development feasibility. The USDA Natural Resources Conservation Service Web Soil Survey provides valuable preliminary soil information. USDA also notes that onsite investigation may still be necessary for certain engineering and soil-quality applications.

Depending on the property and proposed construction, appropriate professionals may recommend soil evaluations, geotechnical investigations, septic testing, grading analysis or other site-specific studies.

Also evaluate the property's slope. Significant grading, retaining walls, drainage systems or specialized foundations can quickly change your construction budget.

6. Investigate Drainage and Flood Risk

Water needs somewhere to go.

When evaluating infill land, look beyond the parcel itself and study the surrounding properties. Is the lot lower than neighboring homes? Does stormwater naturally flow toward it? Are there drainage pipes, creeks, ditches or stormwater features nearby?

Development around the property may have changed drainage patterns over decades.

Flood-zone information should also be reviewed as part of the due-diligence process. Floodplain status can potentially affect construction requirements, insurance, financing and site design.

7. Research the Property's History

Infill land can have a past.

Was there previously a house on the property? A commercial building? A garage? An underground storage tank? An old septic system? Was the parcel created by subdividing a larger property?

EPA notes that some infill sites can include brownfield properties where previous uses created actual or potential environmental contamination.

That doesn't mean every older vacant lot should cause concern. It means buyers should investigate unusual historical uses rather than assuming an empty lot has always been empty.

8. Look Up—Trees and Power Lines Matter

Large mature trees can make an infill property beautiful, but their location may affect your house placement, driveway, grading and construction costs.

Tree-removal ordinances or local development regulations may also apply.

Overhead power lines deserve equal attention. Determine whether the home's proposed footprint, driveway or construction equipment could conflict with existing utility infrastructure.

Before excavation, appropriate underground utilities should also be located through the applicable utility-marking service.

9. Don't Forget the Driveway

Driveway access can become surprisingly complicated on an infill project.

Consider:

• Sight distance
• Road classification
• Curb cuts
• Sidewalks
• Drainage
• Existing utility poles
• Fire-hydrant locations
• Street trees
• Storm drains
• Required driveway permits

A house may technically fit on the property while the desired driveway or garage configuration does not.

10. Study the Surrounding Homes

Infill construction is different from building in an undeveloped subdivision because your future home will immediately be compared with established properties.

Look at nearby:

• Home sizes
• Architectural styles
• Lot sizes
• Garage configurations
• Recent renovations
• New construction
• Recent comparable sales

Building the largest and most expensive house possible isn't always the best financial strategy.

A thoughtfully designed home that complements the surrounding market while providing desirable modern features may offer stronger resale positioning.

11. Check for HOA, Historic District and Architectural Restrictions

"No HOA" does not automatically mean "no restrictions."

An infill property could potentially be affected by recorded deed restrictions, historic-district requirements, architectural standards, municipal overlays or other regulations.

If you're envisioning a highly contemporary home in a neighborhood dominated by historic architecture, determine whether your proposed design is permissible before paying an architect to complete the plans.

12. Create a Realistic Site-Development Budget

The price of the land is only one component of the project.

Your preliminary budget should account for potential expenses such as surveying, engineering, permits, utility connections, clearing, demolition, grading, erosion control, driveway construction, foundation work, drainage, landscaping and professional fees.

This is where a "$60,000 lot" can potentially become much more expensive before vertical construction even begins.

The Infill Land Due-Diligence Checklist

Before purchasing infill land for new construction, consider investigating:

Zoning → Setbacks → Survey → Easements → Utilities → Sewer/Septic → Soil → Topography → Drainage → Flood Risk → Access → Property History → Trees → Building Envelope → Permits → Construction Costs → Neighborhood Values → Resale Potential

The order matters.

Buy the land based on what can actually be built—not simply what you hope can be built.

Why Infill Land Can Still Be an Excellent Opportunity

Despite the additional due diligence, infill land can offer significant advantages.

You may be able to build a brand-new home inside an established community, benefit from existing infrastructure, enjoy proximity to established amenities and create a property that combines modern construction with a mature neighborhood setting.

EPA identifies infill development as a strategy that can strengthen existing communities while directing development toward areas where infrastructure and resources already exist.

For homeowners, investors and builders, the opportunity can be compelling—when the numbers, land and intended home all work together.

Before You Buy the Lot, Build the Strategy

Buying land requires a different level of investigation than purchasing an existing home. When your goal is new construction, your real estate professional should be helping you look beyond acreage and asking questions about buildability, zoning, utilities, development costs and future marketability.

If you're considering purchasing land, an infill lot, or property for a custom or new construction home, connect with Javier Sims Davila and Living In Style Realty. We'll help you approach the property strategically and identify the questions that should be answered before you move forward.

Explore available properties, real estate resources and opportunities at Living In Style Realty.

Don't just ask, "Can I buy this land?" Ask, "Can I build the home I want on this land—and does the investment make sense?"

Helpful Research Resources

For additional due diligence, explore the EPA's Smart Growth resources and the USDA Web Soil Survey. These resources can provide useful starting points, but they should not replace property-specific advice from local planning officials, surveyors, engineers, attorneys, builders and other qualified professionals.