David brings more than 23 years of hard earned and diversified work experience in the construction industry. During his career, he has held a multitude of positions. As a framing carpenter and foreman, he successfully worked his way up to Project Management. Moving on and reaching higher yet, David ultimately built two companies in Blackstone Development, Inc. and Cal General Contractors.

Having a Construction Degree coupled with his field experience, David provides valuable skills and resources to support his clients and their goals.

David’s history and experience in residential, multi-family, commercial and tenant improvements enables him to estimate, plan, manage and successfully deliver a multitude of jobs within schedule and budget, yet keeping quality control at the forefront. 


Blackstone Development Inc.

Cal General Contractors

M&M Construction

Bravo Builders
Director of Construction

Nor-Cal Construction
Project Manager

Bjork Construction

Bernie Construction
Lead Carpenter

Lier Construction

David Tognela
Cal General Contractors, Contractors  General, Alamo, CA