Impervious Surfaces in Residential Real Estate: Impact and Solutions

By
Tim Clarke
June 28, 2025
5 min read
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As the founder of the Tim M. Clarke Team, one of the top real estate teams in the Raleigh-Durham market specializing in custom home building, I've seen firsthand how impervious surfaces can impact residential properties. In this comprehensive guide, we'll explore the challenges these surfaces present and discuss innovative solutions for homeowners and developers.

Understanding Impervious Surfaces

Impervious surfaces are materials that prevent water from naturally soaking into the ground. In the world of residential real estate, these surfaces are everywhere, from driveways to rooftops. As a real estate agent with years of experience in the Triangle area, I've noticed how these surfaces can significantly affect property values and environmental health.

Common Types of Impervious Surfaces

In our North Carolina neighborhoods, you'll find several types of impervious surfaces:

  • Concrete driveways and sidewalks: These are popular for their durability but can contribute to water runoff issues.
  • Asphalt roads: The backbone of our suburban infrastructure, but a major source of impervious coverage.
  • Rooftops: Often overlooked, but a significant contributor to a property's impervious footprint.
  • Patios and decks: While great for outdoor living, traditional materials can exacerbate runoff problems.

The Role in Urban Development

As Raleigh and Durham continue to grow, impervious surfaces play a crucial role in shaping our urban landscape. They provide the foundation for our homes, roads, and commercial areas. However, their widespread use comes with a set of environmental challenges that we, as responsible real estate professionals and homeowners, need to address.

Environmental Impact of Impervious Surfaces

Water Runoff and Flooding

In our Triangle region, where we experience both heavy summer thunderstorms and the occasional tropical system, water runoff is a significant concern. Impervious surfaces increase the volume and speed of surface runoff, which can lead to:

  • Localized flooding: Especially in low-lying areas or neighborhoods with inadequate drainage.
  • Erosion: Particularly along stream banks and in areas with steep terrain.

Water Quality Issues

As a real estate agent who values the natural beauty of our area, I'm particularly concerned about how impervious surfaces affect our water quality:

  • Pollutant transport: Runoff from roads and driveways can carry oil, grease, and other contaminants into our local waterways like Falls Lake or the Neuse River.
  • Thermal pollution: Heat absorbed by asphalt and concrete can warm up runoff, potentially harming aquatic ecosystems.

Ecosystem Disruption

The expansion of impervious surfaces in our growing communities often comes at the cost of natural habitats:

  • Habitat loss: As we develop new neighborhoods, we sometimes encroach on wildlife areas.
  • Groundwater depletion: Reduced water infiltration can lower groundwater levels, affecting wells and natural springs.

Challenges for Residential Real Estate

Property Value Considerations

As a real estate professional, I've seen how impervious surface issues can affect property values:

  • Flood risk assessment: Properties with high impervious surface coverage may face increased flood risks, potentially impacting insurance rates and overall value.
  • Environmental regulations: Some areas in the Triangle impose limits on impervious surface coverage, which can affect development potential and property use.

Stormwater Management

Managing stormwater is becoming an increasingly important aspect of property ownership:

  • Infrastructure strain: Excessive runoff can overburden municipal stormwater systems, leading to potential flooding and water quality issues.
  • Maintenance costs: Homeowners may face higher costs for managing runoff and related issues on their properties.

Solutions and Mitigation Strategies

As a custom home building specialist, I'm excited about the innovative solutions available to address impervious surface challenges:

Permeable Alternatives

  • Permeable pavers: These allow water to seep through while providing a stable surface for driveways and walkways.
  • Porous asphalt and concrete: Engineered to allow water to pass through into the soil beneath, these materials are gaining popularity in our custom home projects.

Green Infrastructure

Incorporating green infrastructure into property design is not only environmentally friendly but can also enhance curb appeal:

  • Rain gardens: These landscaped areas are designed to collect and filter runoff, adding beauty to your yard while serving a practical purpose.
  • Bioswales: Vegetated channels that slow and filter stormwater, often used along driveways or property boundaries.
  • Green roofs: While more common in commercial buildings, some of our custom home clients are exploring rooftop gardens that absorb rainwater and provide insulation.

Smart Landscaping Techniques

As someone who's worked with numerous landscape designers in the Triangle, I can attest to the effectiveness of these techniques:

  • Strategic grading: Directing water flow to permeable areas of the property can significantly reduce runoff.
  • Native plant selection: Using plants adapted to our North Carolina climate can improve water absorption and reduce the need for irrigation.

Regulatory Landscape and Incentives

Local Ordinances and Zoning

In the Raleigh-Durham area, we're seeing increasing regulation around impervious surfaces:

  • Impervious surface limits: Many municipalities set maximum percentages for property coverage, which can affect building plans.
  • Stormwater management requirements: New developments often must include on-site water management strategies.

Incentive Programs

Some local governments are offering incentives to encourage better stormwater management:

  • Tax credits: Homeowners who implement green infrastructure may be eligible for tax benefits.
  • Stormwater fee reductions: Some areas offer discounts on utility fees for properties that reduce runoff.

Future Trends in Impervious Surface Management

As a real estate professional always looking to the future, I'm excited about emerging trends in this field:

Technological Advancements

  • Smart materials: We're seeing the development of surfaces that can adapt to environmental conditions, potentially revolutionizing how we manage runoff.
  • Remote sensing: Improved mapping and monitoring of impervious surfaces are helping urban planners make better decisions about development.

Sustainable Urban Design

  • Low Impact Development (LID): This design approach works with nature to manage stormwater as close to its source as possible, a principle we're increasingly incorporating into our custom home designs.
  • Urban heat island mitigation: Strategies to reduce the heat-absorbing properties of impervious surfaces are becoming more important as our cities grow.

Real-World Examples from the Triangle

Let me share a few examples from our local market to illustrate these concepts:

  1. Sustainable Subdivision in Cary: We recently worked with a developer who incorporated bioswales and permeable driveways throughout a new subdivision. Not only did this meet local regulations, but it also became a major selling point for environmentally conscious buyers.
  2. Custom Home in Durham: One of our clients opted for a green roof on their garage and a rainwater harvesting system. This not only reduced their impervious footprint but also provided water for their garden during dry spells.
  3. Renovation in Raleigh: A homeowner facing recurring flooding issues worked with us to redesign their landscape, incorporating a series of rain gardens. This not only solved their water problems but also created a beautiful, low-maintenance yard.

Tips for Homebuyers and Sellers

If you're in the market to buy or sell a home in the Triangle, here are some tips related to impervious surfaces:

For Buyers:

  • Look for properties with smart stormwater management features.
  • Consider the long-term benefits of homes with lower impervious surface coverage.
  • Ask about any existing water issues or flood history.

For Sellers:

  • Consider implementing some of the mitigation strategies we've discussed to increase your property's appeal.
  • Highlight any existing green infrastructure or stormwater management features in your listing.
  • Be prepared to discuss how your property handles heavy rainfall events.

The Role of Real Estate Professionals

As real estate agents, we have a responsibility to educate our clients about these issues and help them make informed decisions. At the Tim M. Clarke Team, we've made it a priority to stay informed about the latest developments in sustainable building practices and local regulations regarding impervious surfaces.

We work closely with local builders, landscape architects, and environmental experts to ensure that our custom home projects not only meet our clients' needs but also contribute to the overall health and sustainability of our communities.

Balancing Development and Environmental Stewardship

As we continue to grow and develop our beautiful Triangle region, finding a balance between necessary infrastructure and environmental preservation is crucial. By understanding the impacts of impervious surfaces and implementing innovative solutions, we can create more sustainable and resilient communities.

At the Tim M. Clarke Team, we're committed to helping our clients navigate these challenges and opportunities. Whether you're looking to build a custom home, buy an existing property, or sell your current house, we have the expertise to guide you through the process with an eye towards sustainability and long-term value.

Let's Talk

Ready to explore how you can make a positive impact through your real estate decisions? Contact the Tim M. Clarke Team today. Let's work together to find or create a home that not only meets your needs but also contributes to a more sustainable future for our Triangle community. Contact us to schedule a consultation. Your dream home and a greener tomorrow are just a conversation away!

Tim M. Clarke

About the author

17 years as a Realtor in the Research Triangle, Tim seeks to transform the Raleigh-Durham real estate scene through a progressive, people-centered approach prioritizing trust & transparency.