Acterra’s free Marin Green@Home Tour runs Aug. 29 across private homes in Marin County. Register first, then use the route information to pick the retrofit lessons that actually match your house.

Acterra’s Marin Green@Home Tour 2026 (external source, opens in a new tab) runs Saturday, Aug. 29, from 11 a.m. to 3 p.m. at multiple private homes around Marin County. Admission is free, but registration is required; Acterra lists the event as “in person,” not at a single public venue, so the useful address is the route information you get by registering.

That private-address catch is the whole service note here. The dedicated Marin Green Home Tour site (external source, opens in a new tab) describes the day as an in-person tour of electrified homes throughout Marin County, including both new builds and homes moving away from gas. A separate Ride and Drive Clean event listing (external source, opens in a new tab) also confirms the Aug. 29, 11 a.m.-3 p.m. window, Marin County location, and registration-email setup. That gives the public calendar details a second listing source, though the richer event description still comes from organizer and partner pages.

The reason to go is not that you need another Saturday errand with the word “green” attached to it. It is that electrifying a house is expensive, oddly specific, and hard to judge from product pages. The tour is pitched around the stuff homeowners actually comparison-shop: electric heating and cooling systems, hot-water equipment, induction cooking, rain capture, composting, EVs, solar panels and home batteries (external source, opens in a new tab). Ride and Drive Clean says each home should have a tour host, general information from MCE Clean Energy, and house-specific notes on the upgrades.

That makes the homeowner conversation the point. Ask what they would install again, what took longer than promised, whether the contractor knew the equipment, what changed their electric panel, which incentives were worth the paperwork, and whether the appliance they bought fits the way they actually live. That is the information you rarely get from a showroom, a rebate webinar or a contractor’s before-and-after photo.

Logistics: Saturday, Aug. 29, 11 a.m.-3 p.m.; Marin County; free with required registration (external source, opens in a new tab). Public street addresses are not posted as of Wednesday, Aug. 19; the Ride and Drive Clean listing (external source, opens in a new tab) says a link will be emailed to attendees. I could not verify public parking, transit, accessibility or age-restriction details from the event pages, so wait for the organizer’s registration email before planning the route. Because this is a self-guided tour across private homes, driving or carpooling is probably the practical move unless the route later shows a tight cluster near transit.

The regular’s move: register, then be selective when the addresses arrive. If I only had two hours, I would skip the most polished new construction unless I were building from scratch. I would pick one older-home retrofit and one home with the exact system I am considering, then spend the visit asking about contractors, permits, panel capacity, noise, operating cost and the purchase they would undo.