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Greenport Construction

Eli and Jacob Froneberger grew up in Marin and never left.

In 2013 they milled planter boxes out of old-growth oak pallets that were headed for a landfill and sold them at farmers markets. Demand outran supply. They pooled what they had, leased a shop, and started taking on remodels.

Twelve years later Greenport is a licensed general contractor with a woodshop in San Rafael, a Dwell Remodel of the Year, and a permit history across Marin, San Francisco, and the East Bay. The model has not changed. Design and construction under one roof, millwork built in-house, and one of the two of them on every project.

Planter boxes to permit sets

The company began with planter boxes built from salvaged old-growth oak pallets and sold at farmers markets. The material discipline stuck. So did the habit of finishing the back of the thing nobody will see.

Eli is CEO. Jacob is CFO, which is why the cost reporting on a Greenport job is a document and not a phone call.

Founded
2012, San Rafael
Principals
Eli Froneberger, CEO. Jacob Froneberger, CFO
License
CA General Building #1073941, expires 3/31/2027
Awards
Dwell Remodel of the Year 2019. PG&E and SMUD awards
Reviews
5.0 stars from 17 Google reviews

What clients say

Designed a built-in combining an integrated Murphy bed and desk across mixed finishes and hardware. Praised the attention to detail on a complex piece, called the craftsmanship premium, described the process as collaborative, and has referred Greenport onward.
Adrian Dagli. Interior designer, personal project
Three separate renovations with Greenport. Notes Eli's depth of knowledge and the way he encourages the client's own vision while being candid about what can realistically be done. Recommends without reservation.
Kim Grafton. Three renovations
Kitchen and bathroom remodel. Describes Greenport as a genuine partner, and calls out problem-solving on difficult space constraints, communication, and responsiveness.
Kim Turner. Kitchen and bathroom remodel
Kitchen island and bar addition. Highlights a clean process from quote through final punch list, and a crew that minimized disruption so the kitchen stayed usable during the work.
Tommy Mina. Kitchen island and bar addition
Walk-through closet build. Eli and the crew repurposed the old cabinets for garage and office storage, then built custom closet and drawer cabinetry in the connecting hallway.
Sidney Painter. Walk-through closet build
Full shell-to-finish office build-out: polished concrete floors, production room, conference rooms, private offices, an open studio, custom desks, shelving, sliding interior windows, and walnut and glass barn doors.
Commercial office build-out, via Networx

5.0 across 17 Google reviews

Press and partners

Dwell, Architectural Digest, HGTV Magazine, Builder, Green Builder, BusinessWire, East Bay Regional Park District, SMUD, and Anja Michals Design.