ABS’s mission is to utilize the latest in building science and technology to reduce energy waste, utility bills, and greenhouse gas emissions in buildings while increasing their healthfulness, comfort, and durability. We bring a heritage of over 60 years of renovating and remodeling to this task. From building energy audits, to simple weatherization measures, to deep energy retrofits, to full blown Zero Net Energy retrofits, our company is the North Bay leader in building performance assessment and upgrades.