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About Us

The Viva Green Homes Advantage.

  Global Platform for Eco Home Listings and Professionals  


Why does Viva Green Homes exist?  

It's simple. We are solving one the largest and fastest growing issues in real estate
-- incorporating eco and energy efficient homes into the marketplace

VivaGreenHomes.com is an innovative national real estate home listings website specializing in showcasing eco & energy efficient features and 3rd party certifications. The proprietary VivaGreen Score is an online virtual scoring certification based on the quantity & quality of eco features in a home, 1-5 stars.  
  • » We are working to accurately record and market eco features of homes.
  • » Finding the true market value of eco homes and helping industry leaders make better decisions about their products and services.
  • » Creating a global platform where buyers can access more information about potential homes, i.e. energy efficiency, features, and certifications.
  • » Allowing sellers to market their premium listings more accurately for a better return on their investment. 
  • » Providing a national real estate website that fills the gap of local MLS's.
  • » Combating "greenwash" marketing through our VivaGreen score.
  • Learn more about the issues in current real estate >>  
4 Key Areas to Grow The Eco Homes Market

  1. The largest, most comprehensive & accurate national database of eco homes listings.
  • Thousands of listings across the country and now international listings too. 
  • Hundreds of eco features that sellers and listing agents can select from to accurately market the home.
  • Buyers have easy access to more detailed information about homes than anywhere else, a home's energy efficiency, its systems and features, and certifications as well as potential cost savings using renewable energy like solar or geothermal.
2.  Combating “greenwashing.”

  • Viva Green Homes has a proprietary 1-5 star VivaGreen score for homes based on the quality and quantity of eco features.
  • Working to verify eco claims, such as certifications, eco features and energy scores of homes as soon as they come onto the market. 
  • Showcase third party certifications like LEED, Energy Star, Passive House... 

3. Providing a national platform for professionals and customers (coming soon) to find a full range of eco professionals, real estate agents and services that cater to their eco home buying or sales needs. 
  • Appraisers, energy auditors, solar installers, home builders, certifiers, product distributors and more.
  •  VGH creates dynamic and data-drive profiles for each professional to help match consumers better with professionals. 
  4. Lastly, we’re working to find the true value of eco homes.
  • How are eco homes and their features performing in the marketplace? We are helping to uncover this. 
  How We Work    
VivaGreenHomes.com is a media website that hosts eco home listings for free. 
Owners or agents have complete control over their listings, to edit, enhance or adjust its activity on the site at all times through their account.   Please contact us if you have any questions or need any assistance. We are more than happy to help.


2016 Cleantech Open National
Winner of the Business Award for the Business Model
with the Best Chance of Immediate Investment and Commercialization. 


Winner of Cleantech Open's Southeast Region   http://eepurl.com/ckepc5


Our Team

  VGH is headquartered in Arlington, VA, with a team of a founder, experienced engineer, developer and listing specialist located across North America. They are knowledgeable and passionate about making sure that the real estate market includes these premium listings for sellers to market their homes and helping to educate and provide a platform for homebuyers to find their next home or eco professional.
  • Kari Klaus Founder and CEO

    American University, Washington DC
    BA, cum laude, in International Studies with a focus on sustainable development

    LEED Green Associate

    Professional Experience:
    Licensed real estate agent in Virginia since 2005 (Keller Williams and ZipRealty)
    EPA Outstanding Scholar
  • Scott Miles Lead Engineer

    Georgia Institute of Technology
    Bachelor of Science, Computer Science. High honors. 

    Certified Information Systems Security Professional (CISSP)
    Professional Experience:
    20+ years IT experience 
    Clear Skies Security
    Internet Security Systems 
  • Alex Gonzalez Developer

    Chihuahua Institute of Technology
    Bachelor of Information Tchonlogies, Honorific mention.

    Professional Experience: 10+ years IT experience
    Mobile solutions
    Web development

    With Viva Green Homes since 2014
  • Jan Northenscold Listing Specialist

    Former real estate agent in Minnesota with 6 years experience.

    Passion for her work with dog rescue Playa Animal Rescue

    With Viva Green Homes since 2014

Viva Green Homes is also mentored and advised by leading entrepreneurs in tech start-ups as well as experienced professionals in real estate and sustainability. 

  • Paul Goggin Advisor

    Serial Entrepreneur and Founder, CTO, Technologist, Scientist, serves on a variety of boards



  • Alicia Brown Advisor

    Experienced Real estate agent since 2002, Real estate Broker and the Northern Virginia Association of Realtors Committee

Our Press


We've been in the Washington Post, Chicago Tribune, Huffington Post and other nationally syndicated columns as well as ARLNow.com, Elemental.green, Active Rain and more.

Silicon Valley Startups Radio

Interview with Kari Klaus    

The Washington Post 


This article was syndicated in The Chicago Tribune and numerous columns across the country.    

Buyers should be wary of houses that are marketed as energy-efficient

By Kenneth R. Harney July 6    



The energy-efficient New Norris House in Norris, Tenn., was selected by the American Institute of Architects as one of the nation's top 10 examples of sustainable architecture and green design in 2013. (J. Miles Cary/AP)



 The practice is called “greenwashing,” and home shoppers need to be on guard: It means a house is being marketed as environmentally friendly and energy-saving when it doesn’t deserve that description. 

Greenwashing is a growing issue in real estate as multiple studies demonstrate that consumers are attracted to — and will often pay premiums for — homes that are highly efficient in saving on utility bills.
Just about everybody likes the concept of green, and builders and real estate agents increasingly use the term as a sales come-on. But experts say that, too often, what’s marketed as green isn’t what it purports to be when you take a close look...

Kari Klaus, chief executive and founder of Viva Green Homes of Arlington, Va., a new national listing portal exclusively for “eco-friendly” homes, says “greenwashing is a growing problem — clearly there’s a desire to jump on the train and use buzzwords” such as “green,” “sustainable” and “high-efficiency,” too often with little to back up the claims.

Her website (at vivagreenhomes.com) carries free listings for homes certified by HERS, LEED, Energy Star, Built Green, NetZero and other programs as well as for noncertified homes that have some green features such as solar panels, geothermal systems, energy-efficient windows and doors, water conservation devices, etc.

When noncertified homes are listed on the site, the seller or agent must check off boxes indicating which green features the property offers. Viva Green Homes then produces a “Green Score” ranging from one to five stars to give potential purchasers a rough idea of how green the house is.

Source: Washington Post. Read the full article

The Huffington Post    

5 Environmentally Safe Actions That Will Increase Your Home’s Value  

Recently, the Institute for Market Transformation released a  study  showing a positive correlation between home energy efficiency and curb appeal. On average, high-performance homes are valued at a premium of 3.46 percent more than non-high performance homes. Some were even valued as high as 6% to 7.7% more. That equated to between $10,343 to $53,000 that buyers were willing to pay for a high-performance home over a standard performance home.   What does this mean for you, the enterprising homeowner who wants to reduce their footprint? It means that renovations designed to improve the efficiency of your home can also boost its resale value. Here’re some actions to get started.       1. Get an energy audit
      2. Spend an afternoon at the hardware store
    3. Install energy efficient windows
    4. Power your home with renewable energy
    5. Upgrade your appliances  There’s even a search engine to find certified homes for sale called Viva Green Homes That will be useful if you’d like to do a bit of competitive analysis to determine what ratings are typical in your area. Source: Huffington Post. Read the full article


Arlington Economic Development
Arlington Premiere

  December 7, 2016  Arlington, Virginia. 
Viva Green Homes is showcased and receives a key to the city. 


Green Connections Radio  

Whether you’re looking to rent or buy a home, apartment, condo, or townhouse, historically you’ve had to ask a lot of questions to find out about the home’s energy efficiency and carbon footprint. Meet Kari Klaus of Viva Green Homes, a new home listing service that is changing that.       Listen to Green Connections host Joan Michelson’s engaging conversation with Kari about how to buy or rent a “green” home no matter where you’re located, what to look for, and pitfalls.       You’ll learn about:       “Green-washing” – or exaggerated claims in listings       How their rating system works       Tips for buying or renting a green home/apartment       And more!       Tell us what you heard on Twitter @joanmichelson, on our Facebook page – and like the page!     Thanks for listening! Please subscribe to Green Connections Radio on iTunes, iHeartRadio, TuneIn, or Stitcher, and subscribe to our newsletter for more up-to-date information on innovation, energy, green and careers at

http://www.greenconnectionsradio.com .    
Podcast Source  

  Startup Monday: Viva Green Helps Home Buyers Find Eco-Friendly Houses

by Michelle Rosenfeld — August 22, 2016 

Startup Monday header
Editor’s Note: Sponsored by Monday Properties and written by ARLnow.com, Startup Monday is a weekly column that profiles Arlington-based startups and their founders, plus other local technology happenings.  The Ground Floor   , Monday’s office space for young companies in Rosslyn, is now open. The Metro-accessible space features a 5,000-square-foot common area that includes a kitchen, lounge area, collaborative meeting spaces, and a stage for formal presentations.  
When Arlington real estate agent Kari Klaus decided to renovate her home to make it more energy efficient, she stumbled upon a problem.
    Klaus, whose background is in sustainable development, realized that the traditional real estate property listing system doesn’t showcase or market environmentally friendly features for homes, making her house appear similar to others that aren’t energy efficient.      
From working in the real estate business, she knew that home buyers care about how eco-friendly their future home will be.  “Wouldn’t you want to know if the home you are thinking of buying has superior systems, a tight building envelope (sealed to prevent air leaks) with solar panels and will save you potentially hundreds of dollars each and every month?” Klaus said.
      But there was no understandable and reliable way to rank, search and view energy efficient homes, Klaus said.
      That’s where    VivaGreenHomes.com    comes in.   VivaGreenHomes.com   “VivaGreenHomes.com shows you that these options exist and explains their importance to you as a home buyer,” Klaus said. “If a home’s environmental or health value has not won you over, then the potential to save you a lot of money will.”

  She said her company changes the game because other real estate listing services aggregate home listings without any verification procedures. VivaGreenHomes.com uses claim verification methods, including a “Home Energy Rating System” score, an industry standard for eco-friendly homes   .