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Appendix 1

Quantifying the Unsubsidized Affordable SMMF Housing Stock

Using 2017 ACS 1-year microdata, Enterprise Community Partners estimated the total number of unsubsidized affordable units that were in SMMF properties. First, the total number of units affordable at different income levels was calculated. Income levels were calculated as percentages of the local median renter income across the country. The median renter income was calculated based on all renter households in the metro area or state (for households living in non-metro areas). Units were considered “affordable” if they were offered at gross rents at or below 30% the specified income level. Table 1 depicts the total number of affordable units available at each income level, broken down by the number of units in the structure:

Table 1
Total number of affordable units available at each income level, by the number of units

 

 

Affordable by % of Local Median Renter Household Income

Units in structure Total

0-60%

61-80%

81-100%

101-120%

Mobile home or trailer

1,883,811

597,009

999,753

1,384,339

1,653,526

Boat, tent, van, other

43,797

28,765

35,699

38,611

41,720

1-unit house, detached

12,143,930

2,166,895

3,202,790

4,864,142

6,764,703

1-unit house, attached

2,779,748

404,194

654,446

1,081,121

1,532,131

2-unit building

3,174,710

536,175

1,066,580

1,761,708

2,352,041

3-4 unit building

4,420,559

779,433

1,568,013

2,584,374

3,352,014

5-9 unit building

4,919,335

806,498

1,665,934

2,870,908

3,776,791

10-19 unit building

4,690,255

679,669

1,470,864

2,626,819

3,526,258

20-49 unit building

3,755,879

738,464

1,320,293

2,097,107

2,735,182

50+ unit building

5,472,078

1,386,540

1,973,968

2,762,026

3,498,302

Total

43,284,102

8,123,642

13,958,340

22,071,155

29,232,668

           

All 2-49 unit

20,960,738

3,540,239

7,091,684

11,940,916

15,742,286

% of total

 

17%

34%

57%

75%

 

Among the estimated 21 million rented units in SMMF (2-49 unit) buildings across the country, 34% (7.1M) are affordable at 80% of renter median income, 57% (11.9M) are affordable at the renter median income, and 75% (15.7M) are affordable at 120% of renter median income.

Table 2 depicts a similar pattern for the Atlanta 5-county area (Clayton, Cobb, DeKalb, Gwinnett, and Fulton counties): 

Table 2
Total number of affordable units available at each income level, by the number of units
Atlanta 5-county area)

 

 

Affordable by % of Local Median Renter Household Income

Units in structure Total

0-60%

61-80%

81-100%

101-120%

Mobile home or trailer

5,121

1,704

3,519

4,518

4,855

Boat, tent, van, other

121

35

35

121

121

1-family house, detached

167,834

13,904

30,228

56,892

96,047

1-family house, attached

27,892

3,282

6,391

13,741

18,528

2-family building

15,544

2,975

6,386

11,986

13,497

3-4 family building

33,340

4,954

12,955

21,773

29,103

5-9 family building

82,771

10,572

27,795

53,820

70,502

10-19 family building

99,340

9,578

23,807

51,023

77,481

20-49 family building

53,213

5,541

10,732

21,797

34,141

50+ family building

84,460

15,855

20,173

29,025

42,308

Total

569,636

68,400

142,021

264,696

386,583

           

All 2-49 unit

284,208

33,620

81,675

160,399

224,724

% of total

 

12%

29%

56%

79%

 

Among the estimated 284,208 rented units in SMMF (2-49 unit) buildings, 29% (81,675) are affordable at 80% of renter median income, 56% (160,399) are affordable at the renter median income, and 79% (224,724) are affordable at 120% of renter median income.

Table 3 depicts the findings for Miami-Dade County:

Table 3
Total number of affordable units available at each income level, by the number of units
(Miami-Date County)

 

 

Affordable by % of Local Median Renter Household Income

Units in structure Total

0-60%

61-80%

81-100%

101-120%

Mobile home or trailer

5,106

741

1,951

3,284

3,582

Boat, tent, van, other

46

35

35

35

46

1-family house, detached

81,615

11,592

13,957

19,963

24,894

1-family house, attached

45,139

7,142

9,147

13,771

17,885

2-family building

12,871

2,783

3,780

5,760

7,949

3-4 family building

26,307

4,421

6,600

11,094

15,628

5-9 family building

36,191

4,872

9,189

17,171

21,989

10-19 family building

51,510

5,889

10,278

19,248

29,063

20-49 family building

62,549

10,833

13,517

21,797

36,432

50+ family building

107,880

17,892

21,697

30,535

42,606

Total

429,214

66,200

90,151

142,658

200,074

           

All 2-49 unit

189,428

28,798

43,364

75,070

111,062

% of total

 

15%

23%

40%

59%

 

Among the estimated 189,428 rented units in SMMF (2-49 unit) buildings in Miami, 23% (43,364) are affordable at 80% of renter median income, 40% (75,070) are affordable at the renter median income, and 59% (111,062) are affordable at 120% of renter median income.

These totals include subsidized SMMF units. The National Housing Preservation Database (NHPD) was used to determine how many of those units were not receiving any subsidy and were still affordable to lower-income households, nationally and in Atlanta and Miami (again using the Atlanta 5-county region and Miami-Dade County as geographic boundaries).

Table 4
Subsidized and unsubsidized SMMF units available at 80% local income level
National, Atlanta, and Miami

 

Total Subsidized and Unsubsidized SMMF Units Affordable at 80% Local Median Renter Income

Actively Subsidized SMMF Units (project-level only)

Total unsubsidized affordable SMMF Units*

National

7,091,684

1,691,569

   5,400,115

Atlanta 5-County Area

81,675

2,790

79,445

Miami-Dade County

43,364

3,079

40,861

*This may include units where tenants are using tenant-based rental assistance (e.g. Housing Choice Vouchers).