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Greenport Construction

Building in Kentfield

Quisisana, our whole-house design-build in Kentfield, is in the project register.

Greenport is a design-build general contractor and millwork shop in San Rafael, founded in 2012 by brothers Eli and Jacob Froneberger, both raised in Marin. We hold California General Building license #1073941, and we mill our own casework at 47 Louise St, a short drive from Kentfield.

Book an on-site consultation in Kentfield

Permitting

Kentfield is unincorporated, so the Marin County Community Development Agency reviews planning and building. The Kentfield Planning Advisory Board comments on projects before the county decides.

Housing stock

Large single-family houses on wooded parcels, many built between the 1930s and 1970s, with a stock of ranch houses that are frequently taken to the studs rather than replaced.

What decides the schedule

County review plus an advisory board adds calendar time before permit issuance. Projects that plan for it start on schedule; projects that do not lose a season.

Common project types

  • Whole-house design-build and deep renovation
  • Additions to ranch and mid-century houses
  • Kitchens, primary baths, and full-house millwork packages
  • Pool houses, studios, and accessory structures

Built in Kentfield

Region
Marin County
Shop
47 Louise St, San Rafael, CA 94901
License
#1073941, active through 3/31/2027
Hours
Monday to Sunday, 8am to 6pm
Reviews
5.0 from 17 Google reviews

Kentfield questions

Who issues building permits in Kentfield?
Kentfield is unincorporated, so the Marin County Community Development Agency reviews planning and building. The Kentfield Planning Advisory Board comments on projects before the county decides.
What kind of work does Greenport do in Kentfield?
Whole-house design-build and deep renovation; Additions to ranch and mid-century houses; Kitchens, primary baths, and full-house millwork packages; Pool houses, studios, and accessory structures. We are a design-build general contractor and millwork shop, so drawings, permits, construction, and cabinetry come from one firm.
What does a whole-house Kentfield project involve?
Feasibility and zoning review first, then a permit set through Marin County with advisory board comment, then construction with our own millwork built in San Rafael. Quisisana, in our register, followed that sequence.

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