2025 AFFH Mapping Tool
Designation
Score
Each indicator value that falls above the regional median adds
one point to the overall opportunity score. To account for areas
with high levels of environmental burden, one point is deducted
if a tract ranks in the highest 5% of regional environmental
burden. Using this method, the final scores are divided into
four primary categories:
● 9 or 8 = “Highest Resource”
● 7 or 6 = “High Resource”
● 5 or 4 = “Moderate Resource”
● 3 or lower = “Low Resource”
See the methodology document for more details.
● 9 or 8 = “Highest Resource”
● 7 or 6 = “High Resource”
● 5 or 4 = “Moderate Resource”
● 3 or lower = “Low Resource”
See the methodology document for more details.
Economic
Education
Environment
The Environmental Burden Flag represents a subset of data
from the CalEnviroScreen 4.0 tool and is utilized to identify
the geographies that have the highest potential – defined as
ranking in the highest 5% of regional environmental burden -
to expose vulnerable populations to nearby health and safety
threats. See the
methodology document
for more details.
Environmental burden flag:
Yes
No
N/A
Designation
The High-Poverty & Segregated layer identifies areas that meet
standards for both concentrated poverty (defined as 30% of the
population below the federal poverty line) and racial
segregation (overrepresentation of Black, Hispanic, Asian, or
all people of color relative to the county). Due to data
unreliability at the block group level in the poverty indicator,
“High-Poverty and Segregated” is designated at the tract level
in rural areas. See the
methodology document
for more details.
Poverty
Segregation
Designation
Pathway
To be eligible for the Neighborhood Change definition, a tract
must in the base year have been low- or moderate-income (LMI)
and have a higher share of people of color (POC) than the
region. Rural areas are not eligible. Eligible tracts can meet
the definition via either Pathway 1: A census tract that meets
criteria for both racial/ethnic change and economic change
between 2000-2022 (Pathway 1A) or between 2013-2022 (Pathway
1B); or Pathway 2: A census tract that is within ½ mile of a
tract that meets Pathway 1A and meets criteria for racial/ethnic
change or economic change between 2013-2022, and meets the
criteria for rising rents or the home value/income gap. See the
methodology document for more details.
Pathway 1A: Substantial Racial/Ethnic and Economic Change (since
2000)
POC neighborhood in
2000 (baseline criteria): Yes No N/A
2000 (baseline criteria): Yes No N/A
LMI neighborhood in
2000 (baseline criteria): Yes No N/A
2000 (baseline criteria): Yes No N/A
Pathway 1B: Substantial Racial/Ethnic and Economic Change (since
2013)
POC neighborhood in
2013 (baseline criteria): Yes No N/A
2013 (baseline criteria): Yes No N/A
LMI neighborhood in
2013 (baseline criteria): Yes No N/A
2013 (baseline criteria): Yes No N/A
Pathway 2: Change since 2013 in Proximity to Pathway 1A Tracts
A half-mile buffer is utilized to account for boundary effects
of neighborhood change. See the
methodology document
for more details.
Within 1/2-mile of a
Pathway 1A tract: Yes No N/A
Pathway 1A tract: Yes No N/A
POC neighborhood in
2013 (baseline criteria): Yes No N/A
2013 (baseline criteria): Yes No N/A
LMI neighborhood in
2013 (baseline criteria): Yes No N/A
2013 (baseline criteria): Yes No N/A
Total Pre-Incentive Low-Income Units in Large Family
Developments
0
0
Total Post-Incentive Low-Income Units in Large Family
Developments
0
0
The year opportunity-based incentives took effect differs by
LIHTC program. For developments awarded 9% LIHTCs, the first year
incentives took effect was 2019. For developments awarded 4%
LIHTCs, incentives first took effect in 2021. For additional
background, refer to
this report.
Pre-/Post-Incentive Units by Level of Neighborhood Resources
Pre-incentive units
All-time units
Post-incentive units
Neighborhoods
Note: *Neighborhoods that meet the High-Poverty & Segregated
definition are also assessed in terms of neighborhood resources.
