Darin Thomsen Construction Online

Specializing in all Metal Building Erecting Repair and Re-Roofs since 1997


Quality prefabricated metal building systems and quality workmanship, Darin and his crew do it right the first time!

Fast, fair and efficient workmanship. Fully customizable buildings for barns, shops, wineries, mini-storages, and more.

Darin worked for Humboldt Sheetmetal erecting CBC buildings from 1986 until he started his own business in '97.

Darin Thomsen Construction -- doing business in Humboldt County and surrounding areas.


When you receive a quote for a metal building, make sure you know what you are getting. Is the quote for a box only with no windows, doors, insulation, skylights, etc? What gage is the metal? Is it galvanized? Is the erecting price included?

There are buildings out there that are inexpensive but as with anything, you get what you pay for.

Ask questions!

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McCullough Construction

Shop 40'x 50'

Darin's Shop

Roof Cover Polycarbonite


Ag Barn 36' x 60' x 14' 2/12 Pitch Roof

Goat Barn

Horse Barn 40' x 70' x 12' 3/12 Pitch 5' Overhangs

Horse Barn

Shop 30' x 60' x 14' 6/12 Pitch


70' x 70' x 12' Western Frame with Redwood Siding

Western Frame

30' x 40' x 10' 4/12 Pitch with Redwood Siding


Fortuna Feed Store

Water treatment plant with polycarbonate siding.

Water Treatment Plant

Blue Star Gas, Garberville

Blue Star Gas

Rocha's Automotive Rocha's Automotive

Wyckoff's WarehouseWycoff's Warehouse

Cal Trans in FortunaCal Trans Fortuna

Roof CoverBarn

Commercial StorageIndustrial Center

Mini StorageMini Storages

Commercial BuildingShop

Shop Building

Single Sloped Roof Building

Roof Cover

Metal Roof


Commercial Building


Western Style Shopwestern frame