Get In Touch With Davey Resource Group

Davey Resource Group Bay Area & Northern California Office

Our California Davey Resource Group, Inc. (DRG) office works with municipalities, businesses, and a variety of organizations to manage and protect the vital ecosystems known as urban forests that help filter water and air, control stormwater, conserve energy and provide animal habitats.

Our team specializes in the nuanced needs of the Bay Area and Northern California surrounding areas. The staff of certified experts is ready to help you reach your goals.

Emily Spillett

Have Questions About Our Services? Let's Chat!

Senior Area Manager: Emily Spillett
Service Areas:
  • Bay Area
  • Greater Sacramento
  • Central Coast
  • Central Valley
  • North Coast
  • North Valley
  • Bay Area
  • Greater Sacramento
  • Central Coast
  • Central Valley
  • North Coast
  • North Valley
  • Bay Area
  • Greater Sacramento
  • Central Coast
  • Central Valley
  • North Coast
  • North Valley
  • Bay Area
  • Greater Sacramento
  • Central Coast
  • Central Valley
  • North Coast
  • North Valley
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What We Do — Browse Our Service Offerings

Tree Preservation

Tree Preservation

Tree risk assessment reports, tree protection zone calculations, mapping of critical root zones and trees to correspond with project plans, soil analyses, on-site monitoring, and tree preservation action plans.

Tree Inventory Management

Tree Inventory Management

Our team of experts can examine and document tree health, assess the value of individual trees or overall benefits provided by trees in a neighborhood, city, or state, and spot potential safety risks.

Urban Forestry Planning

Urban Forestry Management Planning

Customized and turnkey solutions for master plans, tree inventories, data collection and analyses, invasive species mitigation, species selection, planting programs, and maintenance schedules.

Urban Tree Canopy

Urban Tree Canopy Assessment

With high-resolution GIS data, we can effectively classify and assess a community’s tree canopy for growth modeling, priority tree planting and planning, and the management of energy conservation, stormwater, and water resource initiatives.

Partner With Davey Resource Group For Your Next Project

With local offices across the country, our team of experts can provide the guidance, analysis, and quality service you need to manage the natural resources on your property. From wetlands and streams to stormwater management and tree inventories, we offer turn-key solutions for clients nationwide.

Tree Risk Assessment Unit

Tree Risk Assessments: Level 1, 2, and 3


Have your trees grown to a size that makes you nervous for your safety? Tree risk assessments performed by certified arborists can help gauge the safety of a tree on your property with these three levels of detail:

  • Level 1 – A limited visual assessment for when you have many trees and are not sure where to begin
  • Level 2 – A basic assessment for when you can point out a tree with safety concerns
  • Level 3 – An advanced risk assessment for when you know your trees are safety risks, but you want to keep them

Davey now uses sonic tomography technology for decay detection in trees. The tool utilizes sound waves to detect decay or cavities inside aboveground woody tree parts such as trunk and scaffold limbs. Read more about how it works.

The results of your tree assessment are typically provided in an arborist report suitable for permit applications in your municipality.

Arborist Report Treekeeper

TreeKeeper Inventory Management Software  

An All-In-One Forestry Management System

TreeKeeper is a user-friendly, versatile tool developed by Davey Resource Group that can easily manage and access your tree inventory data from any location with an internet connection.

TreeKeeper continues to support and provide tree inventory solutions for:

  • Municipalities
  • Parks
  • Universities
  • Cemeteries
  • Commercial properties
  • Non-profits
Bark Beetle

Invasive Pest Control

Invasive pests can infest and damage large swaths of tree species, causing tree fatalities and long-term impacts on tree species diversity. Davey Resource Group works closely with state and federal environmental agencies to control and eradicate invasive pests in infested areas.

Common invasive species (pests) in the Bay Area, Northern California, and the surrounding areas include:

  • Sudden Oak Death (SOD)
  • Bark Beetle
  • Thousand Cankers Disease

In March 2021, DRG's Dr. Rachel Sitz contributed to research about the impact of thousand cankers disease on walnut trees.

Featured Environmental Consulting Work

Project Profile Yuba City Urban Forest Master Plan Banner 1440X500
Municipality

Urban Forest Master Plan, Yuba City, CA

Davey Resource Group created a UFMP that combined an inventory of the city’s trees and recommendations to strengthen their tree ordinance with a chance for Yuba City residents to engage with the planning process through a photo contest
Read More
Envrionmental Project Profile Calfire Banner 1440X500
Municipality

Tree Inventory & Management Plan, Merced, CA

DRG worked with city staff from Merced, CA to complete a tree inventory for 53,000 trees and develop a comprehensive 8-year urban forestry management plan.
Read More
Envrionmental Project Profile San Fran Banner 1440X500
Municipality

Urban Forest Master Plan, San Francisco, CA

DRG developed an urban forest master plan with a clear set of goals for South San Francisco, CA. The master plan provided direction for the development, improvement, and enhancement of the city’s parks, neighborhood, and street trees.
Read More
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Transportation

Caltrans Tree Health Assessment, Northern California

Davey Resource Group conducts tree health assessments across northern California transportation rights-of-way to help Caltrans mitigate tree-related damage and public safety concerns.
Read More
Your Davey Resource Group, Inc. Northern California Team
Emily Spillett Emily Spillett Senior Area Manager - Northern California Anne Fenkner Anne Fenkner Project Developer Tina McKeand Tina McKeand Senior Associate Consultant Elizabeth Lanham Elizabeth Lanham Associate Consultant (Bay Area) Lori Murphy Lori Murphy Associate Consultant (Sacramento) Rachel Sitz Rachel Sitz Associate Consultant Tim Moran Tim Moran Senior Arborist Allison Steere Allison Steere Associate Consultant Katelyn Obana Katelyn Obana Senior Arborist

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