What It Costs to ‘Green’ an Existing House What It Costs to ‘Green’ an Existing House Doing a Deep Energy Retrofit (DER) of your home is not cheap. In fact, it can cost thousands of dollars, depending on how energy inefficient your home is. (www.hgtv.com) > Read More Share and Enjoy!FacebookTwitterPinterest By c95271x1|2020-10-28T15:45:03+00:00October 28th, 2020|0 Comments Leave A Comment Cancel replyComment Save my name, email, and website in this browser for the next time I comment. Notify me of follow-up comments by email. Notify me of new posts by email.