Leafbird Consulting LLC

Integrated Climate Solutions

Tribal Home Energy Audits and Weatherization

Roadside sign at the entrance to Hopland Band of Pomo Indians land, listing five departments on Nokomis Road: wastewater treatment plant, tribal roads and transportation, Lalil Daqaw Pomo recycling center, Shanel tribal utility department, and tribal EPA department.
Home energy audits reveal air quality, leakage, insulation and other improvements that could be made. These improvements can improve health and comfort, reduce energy consumption and bills, and mitigate emissions. Photo: V. Mehta, 2/2026. With thanks to the Hopland Tribe.

Background

Three Mendocino County Tribes — Potter Valley Tribe, Hopland Band of Pomo Indians, and Guidiville Rancheria of California — sought to understand the energy conditions of their homes and community buildings, and develop a roadmap for weatherization. Many homes face high energy costs, poor air quality, and aging housing stock. This planning phase project built the evidence base needed to pursue implementation funding.

The project objectives are to develop weatherization plans and improvement recommendations based on home energy audits, estimate optimal costs and develop cost estimates for community scale implementation.

Key deliverables

  • ASHRAE energy audits — Level 1 and Level 2 audits of 12 homes and community buildings across 3 Tribes, including building envelope, HVAC, lighting, and plug loads.
  • Blower door testing — Whole-building air leakage testing to quantify envelope tightness and identify sealing priorities.
  • Indoor air quality monitoring — Radon, PM2.5, temperature, and humidity measured in each home, establishing a baseline for implementation.
  • Tribe-specific weatherization plans — Prioritized, costed plans per Tribe covering sequencing, contractor guidance, and available funding pathways including California’s Low Income Weatherization Program (LIWP).
  • Two community workshops — Co-learning sessions on energy, health, and comfort benefits; residents priority-ranked weatherization goals using a dot-voting exercise.

Key findings

  • Health and safety concerns across multiple sites — Guidiville Rancheria HVAC systems showed serious duct leakage, improperly vented combustion equipment, and condensate issues requiring urgent remediation beyond standard weatherization.
  • Strong energy savings potential across all Tribes — Top measures include air sealing, smart thermostats, LED lighting, and solar PV. Solar delivered the largest single annual bill reduction at most sites, despite lower ROI under NEM 3 billing.
  • Tribal priorities: cost savings and health above carbon — Residents ranked saving money and improving indoor air quality as top goals. Carbon stewardship was seen as already embedded in Tribal values — a key insight for shaping implementation grant narratives.

Client

Mendocino County Resource Conservation District (MCRCD)

Funder

California Strategic Growth Council

Tribes served

Potter Valley Tribe
Hopland Band of Pomo Indians
Guidiville Rancheria of California

Project period

2026 – current

Status

Planning phase complete

Implementation phase ahead

Leafbird services

  • Co-learning community engagement
  • Workshop facilitation
  • Grant and implementation pathways
  • Project coordination

Scale

12 homes and community buildings across 3 Tribes

Project partners

Kent Thompson
New Future Building Services
Project Lead · Energy Auditor

Debbie Gross and Vishal Mehta
Leafbird Consulting LLC
Community Engagement & Project Support

MCRCD Staff
Mendocino County RCD
Tribal Coordination & Grant Management

Community weatherization workshop, Grace Hudson Museum, Ukiah
Community weatherization workshop,
Grace Hudson Museum, Ukiah
Residents ranked their top priorities: savings, health, comfort, durability
Residents ranked their top priorities:
savings, health, comfort, durability
Kent Thompson explains the blower door test to a homeowner in Hopland
Kent Thompson explains the blower door test
to a homeowner in Hopland