We have nearly 30 years of construction and energy-efficient design experience to help make your project a reality!


Dear Future Clients,

Welcome to Mulberry Tree Builders, a leader in energy efficient design and construction for the 21st century. Each and every day, inefficient use of energy resources in the United States compromises our economy, our environment, our national and personal security, and our children's futures. Energy imports enhance trade deficits, and enrich politically unstable petrostates. Excessive fossil fuel use increases the probability of devastating oil spills such as the recent Deep Water Horizon spill in the Gulf of Mexico. Continued excessive fossil fuel combustion enhances the specter of radical climate change, and rising home heating and cooling costs result in us greeting each new season with nervous apprehension.

Contemplating all these concerns, I cannot help but recall a comment by Colorado based energy expert Amory B. Lovins a few years back when fuel prices spiked to $4.50 plus per gallon; "We need to resume a conversation we were having thirty years ago".

I am a product of that period of energy turmoil, as well as the ensuing conversation, having studied energy-efficient residential design and construction at Southern Maine Tech, and the University of Southern Maine's School of Industrial Technology in the early 80s. Both schools responded very well to the challenges of those times, and became incubators of building science innovation.

Upon graduating from Tech in 1983, I joined a small design/build firm in Westbrook, Maine that, over time, built some 85 Canadian Double Wall houses featuring enhanced building envelopes that reduced energy loss so substantially we had difficulty finding boilers small enough to heat them. The double wall concept came to New England from the frigid Canadian plains provinces, and the homes we built in Maine in the 80's are still aesthetically attractive energy performers today.

In the 90s, it became difficult to market our efficient homes. Heating fuel prices dropped in large part to government subsidies, as well as acrimony among members of OPEC (Organization of Petroleum Exporting Countries), and although we were always able to employ some of the progressive building science pioneered in North America, the mantel of true building science innovation shifted overseas to entities such as the Passivhaus Institut in Darmstadt, Germany.

Let us come full circle to the energy concerns of our day and the part that American architecture -- and, oh yes, our own homes -- plays in that unfolding drama. Edward Mazria, AIA, famed Santa Fe architect and author of the 1979 classic The Passive Solar Energy Book maintains that buildings in the United States account for 48% of our energy consumption, and that to adequately address the energy challenges outlined in my opening paragraph will require "nothing short of an architectural revolution."

Amory Lovins, my favorite energy thinker, mentioned previously, was recently interviewed about his vision of a more sustainable US energy future, and after offering an hour of exhaustive detail, and endless optimism, was asked by his interviewer if in effect he was challenging us "to think outside the box" -- to which he responded after some pause, "there is no box."

Yours for a more secure efficient future,

Paul S. Liscord III, President,
Mulberry Tree Builders LLC

Other experience:

  • Ecovillage Training Participant, Findhorn Foundation for Sustainable Studies, Forres, Scotland, UK
  • Test Home Paticipating Contractor, Central Maine Power's Good Cents Home Program
  • Certified Solar Thermal Systems Designer and Installer, Maine State Office of Energy Resources
  • Instructor in Building Construction Department, Southern Maine Vocation Technical Institute
  • Studied Energy Efficient Residential Design, University of Southern Maine's School of Industrial Technology
  • Associate Degree in Building Construction, Southern Maine Vocational Technical Institute