Michigan State Land Bank Authority Holdings, Historical Redlining, and Social Equity

Figures & data

Figure 1. HOLC map legend.

Figure 2. HOLC map legend.

Figure 3. Pontiac A-1.

Figure 4. Pontiac D-5.

Table 1. Descriptive Statistics.

Detroit
HOLC Grade	Total Parcels	% SLBA	SVI	% minority	Life expectancy
A	900	1%	0.3	46.88	78.04
B	8879	13%	0.4	42.25	77.1
C	36201	52%	0.66	59.18	73.45
D	23102	34%	0.8	67.02	72.68
Total	69,082	100
Grand Rapids
A	0	0%	0.23	16.78	82.05
B	16	15%	0.412	28.63	78.67
C	58	54%	0.56	29.95	77.97
D	33	31%	0.71	41.18	76.68
Total	107	100
Flint
A	0	0%	0.53	36.9	76.38
B	8	9%	0.77	63.1	75.18
C	41	46%	0.78	58.55	72.63
D	39	45%	0.81	49.86	72.17
Total	88	100

This table shows descriptive statistics for HOLC parcels in the listed cities, the percentage of parcels held by the Michigan State Land Bank (SLBA), social vulnerability (SVI), percentage minority, and life expectancy.

Figure 5. Detroit. This figure shows the A rated parcels (Green), B rated parcels (Blue), C rated parcels (Yellow), and D rated parcels (Red) in Detroit. The black dots represent parcels held by the Michigan State Land Bank (SLBA).

Figure 6. Grand Rapids. This figure shows the A rated parcels (Green), B rated parcels (Blue), C rated parcels (Yellow), and D rated parcels (Red) in Grand Rapids. The black dots represent parcels held by the Michigan State Land Bank (SLBA).

Figure 7. Flint.

Table 2. Detroit SLBA-Non-SLBA Parcels.

Detroit
HOLC Neighborhood	N	SVI	% Minority	Life Expectancy
AB	41	0.37	43.72	77.40
CD	152	0.75**	67.02**	72.81**
t-test p-value		0.000	0.015	0.000
Non-SLBA AB	22	0.12	18.46	80.33
SLBA AB	19	0.79***	72.97***	74.00***
t-test p-value		0.031	0.932	0.049
Non-SLBA CD	36	0.38	23.43	75.96
SLBA CD	116	0.81***	73.78***	72.32***
t-test p-value		0.000	0.000	0.000

This table shows differences in all social vulnerability (SVI), percentage minority, and life expectancy across higher rated HOLC parcels (AB) vs lower rated HOLC parcels (CD). The table also compares AB parcels owned by the Michigan State Land Bank (SLBA) to AB parcels owned by the market, repeated the analysis for CD parcels. A difference of means test was used for statistically significant differences. *, **, and *** represent statistical significance at the 90%, 95% and 99% levels.

Table 3. Grand Rapids SLBA-Non-SLBA Parcels.

Grand Rapids
HOLC Neighborhood	N	SVI	% minority	Life expectancy
AB	16	0.35	24.93	79.73
CD	28	0.60***	32.36	77.70**
t-test p-value		0.010	0.218	0.037
Non-SLBA AB	15	0.32	22.38	79.84
SLBA AB	1	0.82	63.10	78.01
t-test p-value		n/a	n/a	n/a
Non-SLBA CD	13	0.52	24.08	78.64
SLBA CD	15	0.67***	39.53***	76.88***
t-test p-value		0.002	0.008	0.001

This table shows differences in all social vulnerability (SVI), percentage minority, and life expectancy across higher rated HOLC parcels (AB) vs lower rated HOLC parcels (CD). The table also compares AB parcels owned by the Michigan State Land Bank (SLBA) to AB parcels owned by the market, repeated the analysis for CD parcels. A difference of means test was used for statistically significant differences. *, **, and *** represent statistical significance at the 90%, 95% and 99% levels.

Table 4. Flint SLBA-Non-SLBA Parcels.

Flint
HOLC Neighborhood	N	SVI	% minority	Life expectancy
AB	4	0.71	56.55	75.48
CD	24	0.79	54.57	72.42
t-test		0.403	0.891	0.136
Non-SLBA AB	3	0.66	46.63	76.41
SLBA AB	1	0.86	86.30	72.68
t-test		n/a	n/a	n/a
Non-SLBA CD	4	0.78	56.48	75.51
SLBA CD	20	0.80	54.19	71.80
t-test		0.490	0.967	0.047

This table shows differences in all social vulnerability (SVI), percentage minority, and life expectancy across higher rated HOLC parcels (AB) vs lower rated HOLC parcels (CD). The table also compares AB parcels owned by the Michigan State Land Bank (SLBA) to AB parcels owned by the market, repeated the analysis for CD parcels. A difference of means test was used for statistically significant differences. *, **, and *** represent statistical significance at the 90%, 95% and 99% levels.