Building for a better tomorrow.

energy upgrade california


Through Energy Upgrade California, there are rebates of up to $4,000 available from PG&E for work that reduces the energy use in your home>.

We have temporarily reduced the price of a home energy audit to $450 to help you take advantage of these amazing rebates. Kobban Builders is an Energy Upgrade California participating contractor.

schedule an audit before the rebates expire >


Home Performance With Energy Star VideoMaybe your home is drafty, or maybe it just seems too cold in the winter for how high your energy bills are. Maybe certain rooms just never seem comfortable.

Or maybe you want to make sure your family lives in a healthy environment. Asthma and other respiratory problems can be exacerbated by unhealthy air flows in buildings. By minimizing the flow of air containing allergens into your home, you are helping make your home a healthier environment. Leaky air ducts can pull in dirty air from the outside or dust or mold from crawlspaces or attics.

Maybe you also care deeply about reducing your energy use. Could be you’re considering solar panels or solar hot water and know that the right first step is reducing your energy needs to spend less on your solar installations.

learn more about your home’s carbon footprint >


Done right, a home energy audit is a scientific assessment of your home’s energy efficiency, air flows and energy usage.

A full home energy audit includes using sophisticated diagnostic equipment to take measurements of air leakage, duct flows, insulation deficits, proper functioning of HVAC, hot water and other systems. Visual inspection of some parts of your home is included in the audit, but without the diagnostic tests, it’s not enough.

The audit will uncover the underlying causes of energy loss that lead to a drafty, uncomfortable home, unhealthy air, or high energy bills. It will quantify for you how much energy your home loses to the outside, where the big energy losses are, and the most cost-effective ways to make it more comfortable and more efficient.

We will spend three to four hours testing your home. Following this visit, we will compile a complete report outlining our findings and recommendations.

elements of a home energy audit >

our experience

An experienced general contractor is used to seeing a home as a series of systems that work together. A good home energy auditor does the same, approaching the ‘building as a system’ to understand how the components work together.

It does take somebody with real knowledge about how buildings work to be able to provide a comprehensive audit. In the same way you wouldn’t want an unlicensed contractor to do renovate your home, you wouldn’t want an audit performed by somebody who wasn’t certified. Ask us to show you our certifications.