TABLE 1 DATA TYPE BY DATA SOURCE
DATA TYPE	DATA SOURCE

Vacant Property Survey, 1984, 2000-01	Philadelphia Department of Licenses and Inspections
City Property File, 2001	Philadelphia Board of Revision of Taxes
Real Estate Tax Records, 2000	Philadelphia Revenue Department
Sheriff Sales Records, 2000	Philadelphia Sheriff Department
Philadelphia Housing Program Records, 1995-2001	Philadelphia Housing Development Corporation, Philadelphia Office of Housing and Community Development, Philadelphia Redevelopment Authority
Lending Records, 1990-98	Home Mortgage Disclosure Act Data: Federal Financial Institutions Examination Council
Structure Fire Records, 2000	Philadelphia Fire Department
Housing and Population, 1990, 2000	U.S. Bureau of the Census

TABLE 2 MEASURES OF ABANDONMENT IN PHILADELPHIA, 2000
	U.S. Census: Other Vacant Property	L&I Vacant Property Survey: All Vacant Property	L&I Vacant Property Survey: Vacant Tax Delinquent or Publicly Owned Vacant Property	L&I Vacant Property Survey: Vacant Housing	L&I Vacant Property Survey: Vacant Tax Delinquent or Publicly Owned Vacant Housing

Total Abandoned
N	37,508	59,737	44,799	26,090	19,161

TABLE 3 CORRELATIONS AMONG THREE MEASURES OF ABANDONMENT IN PHILADELPHIA, 2000
	Licenses and Inspections Vacant Property Survey: All Vacant Property	L&I Vacant Property Survey: Vacant Tax Delinquent or Publicly Owned Vacant Property	Licenses and Inspections Vacant Property survey: Vacant Housing	Licenses and Inspections Vacant Property Survey: Vacant Tax Delinquent or Publicly Owned Vacant Housing

U.S. Census: Other Vacant Property	.740	.733	.833	.827
L&I Vacant Property Survey: Vacant Tax Delinquent or Publicly Owned Vacant Property	.991	1.0	.891	.913
L&I Vacant Property Survey: Vacant Housing	.901	.891	1.0	.988

TABLE 4 DISTRIBUTION OF VACANT PROPERTY IN PHILADELPHIA, 1984 AND 2000
	All Vacancies, 1984	All Vacancies, 2000	Vacant lots, 2000	Vacant Housing, 2000	Vacant Commercial, 2000

# Vacant N Vacant Properties in Census Tracts Mean SD Median Range With At Least One Vacant House N of Tracts % of Tracts Vacant Properties in Residential St. Segment³ Mean SD Median Range With At Least One Vacant House N of Residential St. Segments % of Blocks	38,228 105.31 181.32 26 0-1225 333 91.73% -- -- -- -- -- --	59,796 164.72 259.81 50 0-1846 344 94.76% 2.09 4.67 0 0=57 11,671 45.47%	30,730 84.88 162.92 20 0-1038 311 .96% 1.03 3.41 0 0=57 6,280 24.54	25,922 71.94 105.94 26 0-778 322 88.70% .97 2.11 0 0=42 9,175 35.81	3,144 8.15 15.30 2 0-135 250 69.06% .08 .50 0 0=26 1,378 5.37

³Residential street segment consists of two parallel portions of a block facing each other. Data at the residential street segment level not available for 1984 Source: Philadelphia Department of Licenses and Inspections Vacant Property Survey, 2000

TABLE 5 DISTRIBUTION OF VACANT PROPERTY AMONG PHILADELPHIA CITY COUNCIL DISTRICTS, 1984 AND 2000
Council District	1984 # Vacant	1984 % Share of City Vacant	2000 # Vacant	2000 % Share of City Vacant	1984-2000 % Change

1 2 3 4 5 6 7 8 9 10 TOTAL	5,540 4,199 4,667 1,277 12,261 416 5,503 390 2,739 189 39,228	14.1% 10.7% 11.9% 3.3% 31.3% 1.1% 14.0% 1.0% 7.0% 0.5% 100%	8,804 6,573 6,967 2,556 16,695 1,287 8,731 1,485 4,484 303 59,794	14.7% 11.0% 11.7% 4.3% 27.9% 2.2% 14.6% 2.5% 7.5% 0.5% 100%	59% 57% 49% 100% 36% 209% 59% 281% 64% 60% 56%

TABLE 6 VARIABLES USED TO PREDICT VARIATION IN ABANDONMENT: DESCRIPTIVE STATISTICS AND PREDICTED DIRECTION OF EFFECT
Predicted Direction of Effect

Renovated houses 1995-2001 Mean (SD) # of Settlement Grants-all years of program Mean (SD) # of Basic System Repair Program grants 95-00 Mean (SD) # of dollar amount of Basic System Repair Program grants 95-00 (total) Mean (SD) Average assessment of residential real estate Mean (SD) # of properties in City Tax Sale 2000 Mean (SD) # of properties delinquent greater than market value Mean (SD) # of publicly owned vacant properties in the 1999 survey Mean (SD) Single 1-4 Family Purchase Loans Originated, 1999 Mean (SD) % of loans originated by sub-prime lenders Mean (SD) % of applications for home purchase mortgages denied, 1999 Mean (SD) % of applications for home purchase mortgages denied, 1999 Mean (SD) # of fire department structure fires in residential structures, 2000 Mean (SD) Binary Center City Variable (1 = Center City) Mean (SD) Median household income Mean (SD) % of housing units owner occupied, 1990 Mean (SD) % of heads of households 65 years and older Mean (SD) % African American, 2000 Mean (SD) % Latino, 2000 Mean (SD) % Asian, 2000 Mean (SD) % change in population, 1990-2000 Mean (SD) % change in Hispanic population, 1990-2000 Mean (SD) % change in Asian Population 90-00 Mean (SD) Mean sales price 2000 sales of residential property over $100 Negative Mean (SD) % of sales of residential property in 2000 >$100 Mean (SD) % of residential parcels Mean (SD) % of total parcels Mean (SD)	0.82 (2.12) 33.45 (56.33) 34.63 (51.11) 134,280.41 (198,372.94) 15,003.10 (15,576.15) 0.97 (2.38) 25.59 (63.70) 35.54 (84.31) 40.75 (43.18) 29.44 (21.04) 22.87 (18.04) 48.80 (20.32) 5.37 (5.34) 0.03 (0.18) 25,844.28 (13,742.80) 60.32 (22.78) 32.70 (15.02) 43.33 (37.08) 7.65 (14.25) 3.99 (6.95) -3.84 (23.74) 167.89 (360.45) 85.62 (300.46) 75,520.71 (90,229.24) 41.94 (43.23) 1,193.74 (951.37) 1,535.36 (1,078.46)	Negative Negative Negative Negative Positive Negative Positive Positive Negative Positive Positive Positive Positive Negative Negative Negative Positive Positive Positive Positive Negative Negative Negative Negative Negative Don't Know Don't Know

TABLE 7 THE EFFECTS OF PUBLIC AND PRIVATE ACTIVITIES ON LEVELS OF ABANDONED HOUSING FOR PHILADELPHIA CENSUS TRACTS FOR 2000 (N = 332, DEPENDENT VARIABLE = LOG OF NUMBER ABANDONED PROPERTIES)
INDEPENDENT VARIABLES

PUBLIC SECTOR ACTIVITIES
# of Homeownership Rehabilitation Program renovated houses 1995-2001 # of Office of Community & Housing Development settlement grants-all years of program # of Basic System Repair Program grants 95-00 # of dollar amount of Basic System Repair Program grants 95-00 (total) Average assessment of residential real estate # of properties in City tax Sale 2000 # of properties delinquent & market value # of publicly owned vacant properties PRIVATE SECTOR ACTIVITIES Single 1-4 Family Purchase Loans originated % of loans originated by sub-prime lenders % of applications for home mortgages denied, 1999 % of home improvement loans applications denied, 1999 SOCIAL, DEMOGRAPHIC, AND HOUSING CHARACTERISTICS Structure fires in residential structures, 2000 Binary Center City variable (1 = Center City) Median household income % of housing units owner occupied, 1990 % of heads of households 65 years and older % African American, 2000 % Latino, census % Asian, 2000 % change in population, 1990-2000 % change in Hispanic population, 1990-2000 % change in Asian population, 1990-2000 Mean sales price residential property, 2000 # of sales of residential property, 2000 # of residential parcels Constant R²	0.008168 (0.012254) 0.000645 (0.000688) 0.003334 (0.002652) 0.000000 (0.000001) -0.000026** (0.000007) 0.017350* (0.010478) -0.000782 (0.000796) -0.000300 (0.000583) -0.004863 (0.001255) 0.011865 (0.002393) 0.000143 (0.001792) 0.004010 (0.001604) 0.003289 (0.006642) -0.015362 (0.180242) -0.000005 (0.000004) -0.000969 (0.001714) 0.002844 (0.001886) 0.001668 (0.001331) -0.002164 (0.002177) -0.008496 (0.004252) -0.004587 (0.001713) -0.000015 (0.000063) -0.000014 (0.000072) 0.000004 (0.000001) 0.007308 (0.001639) -0.001088 (0.000173) 0.194992 (0.178596) 0.82

Shown are the B Coefficients and the Standard Errors in Parentheses

TABLE 8 INDEPENDENT VARIABLES IN HEDONIC REGRESSION ANALYSIS PREDICTING THE INFLUENCE OF ABANDONMENT ON HOUSE SALES PRICES

Total living area (log sq. ft.) Mean (SD) Total lot area (log sq. ft.) Mean (SD) Binary variable masonry (1 = brick) Mean (SD) Binary variable stone (1 = stone) Mean (SD) Binary variable row house (1 = row house) Mean (SD) Binary variable semi-detached (1 = semi -detached) Mean (SD) Binary variable house with garage (1 = with garage) Mean (SD) Binary variable one story house (1 = one story house) Mean (SD) Binary variable two story house (1 = two story house) Mean (SD) Binary variable three story house (1 = three story house) Mean (SD) Binary abandonment variable (1 = abandoned) Mean (SD) Binary variable summer sale (1 = winter sale) Mean (SD) Binary variable winter sale (1 = winter sale) Mean (SD) Binary variable spring sale (1 = spring sale) Mean (SD) Percentage change in population in block group Mean (SD) Percent Hispanic in block group 2000 Mean (SD) Percent African American in block group in 2000 Mean (SD) Percent Anglo in block group in 2000 Mean (SD) Percent Asian in block group in 2000 Mean (SD) Median household income in tract Mean (SD) Median year structure built in tract Mean (SD) Percent delinquent more than 100% of market value in tract Mean (SD) 1-4 Family Purchase Loans Originated in tract, 1999 Mean (SD) Percent of applications for home mortgages denied in tract, 1999 Mean (SD) Percent loans originated by sub-prime lenders in tracts, 1990-98 Mean (SD) Distance from the central business district (ft.) Mean (SD) Binary variable vacant residential structure (1 = within 150 feet) Mean (SD) Binary variable vacant residential structure (1 = between 150-300 feet) Mean (SD) Binary variable vacant residential structure (1 = between 300-450 feet) Mean (SD) Binary variable vacant residential structure (1 = between 450-600 feet) Mean (SD) Number of parcels on block Mean (SD) Binary variable abandoned property on block (1 = one) Mean (SD) Binary variable abandoned properties on block (1 = two) Mean (SD) Binary variable abandoned properties on block (1 = three) Mean (SD) Binary variable abandoned properties on block (1 = four) Mean (SD) Binary variable abandoned properties on block (1 = five) Mean (SD) Binary variable abandoned properties on block (1 = six) Mean (SD) Binary variable abandoned properties on block (1 = seven) Mean (SD) Binary variable abandoned properties on block (1 = eight) Mean (SD) Binary variable abandoned properties on block (1 = nine or more) Mean (SD) Binary variable abandoned properties on block (1 = ten or more) Mean (SD) Binary variable abandoned properties on block (1 = none) Mean (SD)	3.01 (0.52) 5.15 (0.36) 0.96 (0.20) 0.02 (0.14) 0.80 (0.40) 0.15 (0.36) 0.46 (0.50) 0.05 (0.21) 0.82 (0.38) 0.10 (0.30) 0.02 (0.15) 0.34 (0.47) 0.14 (0.35) 0.29 (0.46) 5.81 (197.09) 9.58 (17.03) 29.74 (35.03) 49.49 (37.40) 4.18 (8.38) 26,309.32 (8,186.44) 1,944.60 (8.86) 0.26 (0.85) 79.17 (54.79) 0.20 (0.12) 25.84 (17.60) 27,428.12 (16,398.32) 0.15 (0.36) 0.20 (0.40) 0.11 (0.32) 0.08 (0.26) 36.73 (20.94) 0.14 (0.35) 0.06 (0.24) 0.03 (0.18) 0.02 (0.15) 0.02 (0.13) 0.01 (0.11) 0.01 (0.09) 0.01 (0.09) 0 (0.07) 0.02 (0.15) 0.67 (0.47)

[1] For residential property sales over $1000

TABLE 9 THE EFFECT OF ABANDONED PROPERTY PROXIMITY ON RESIDENTIAL SALES PRICES IN 2000 (N = 14526, DEPENDENT VARIABLE = LOG SALES PRICES)
INDEPENDENT VARIABLE	MODEL 1	MODEL 2	MODEL 3

PROPERTY CHARACTERISTICS Total living area (log sq. ft.) Total lot area (log sq. ft.) Binary variable masonry (1 = brick)^a Binary variable stone (1 = stone)^a Binary variable row house (1 = row house)^b Binary variable semi-detached (1 = semi-detached)^b Binary variable house with garage (1 = house with garage)^c Binary variable one story house (1 = one story house)^d Binary variable two story house (1 = two story house)^d Binary variable three story house (1 = three story house)^d Binary variable abandoned property, 2000^e (1 = abandoned) SEASON OF SALE Binary variable summer sale (1 = summer sale)^f Binary variable winter sale (1 = winter sale)^f Binary variable spring sale (1 = spring sale)^f NEIGHBORHOOD CHARACTERISTICS %age change in population in blockgroup % Hispanic in block group, 2000 % African American in block group, 2000 % Anglo in block group, 2000 % Asian in block group, 2000 Median household income in tract Median year structure built in tract % delinquent more than 100% of market value in tract # of single family loans originated in tract, 1999 # of applications for home mortgages denied in tract, 1999 % of loans by sub-prime lenders in tract, 1990-98 Distance from the central business district (ft.) ABANDONED PROPERTY VARIABLES Binary variable vacant residential structure (1 = within 150 feet) ^g Binary variable vacant residential structure (1 = between 150-299 feet)^g Binary variable vacant residential structure (1 = between 300-449 feet)^g Binary variable vacant residential structure (1 = 450-600 feet) ^g	9,684.68 (817.81) 13,914.30 (1,533.18) 3,834.50 (3,007.91) 26,772.34 (4,104.14) -37,103.00 (2,410.94) -28,315.60 (2,252.36) 9,710.01 (1,077.85) -66,194.11 (3,132.75) -69,350.83 (2,564.07) -34,670.22 (2,768.58) -21,407.24 (2,797.31) 486.07 (1,087.40) -2,272.05* (1,366.77) -1,098.33 (1,123.96) 1.19 (2.04) -29.35 (31.72) -82.32 (24.59) -49.62 (20.77) -160.36 (51.64) 3.73 (0.08) 1,470.94 (73.30) 2,847.08 (534.42) 13.55 (9.60) -14,769.60 (5,573.85) -406.15 (52.32) -1.88 (0.04) -7626.80 (1,259.19) -6,819.44 (1,126.61) -3,542.01 (1,359.66) 1,343.22 (1,604.90)	9,805.99 (816.85) 13,578.98 (1,544.36) 3,761.99 (3,008.44) 26,557.48 (4,105.18) -36,506.11 (2,433.26) -27,925.29 (2,258.67) 9,609.78 (1,090.96) -66,158.49 (3,133.14) -68,995.15 (2,568.05) -35,285.79 (2,767.83) -18,334.43 (2,846.320) 431.39 (1,087.22) -2,175.80 (1,367.15) -1,007.80 (1,124.01) 2.04 (1.09) 0.26 (32.17) -52.47** (24.95) -38.22* (20.98) -163.96 (51.84) 3.68 (0.08) 1,518.56 (72.65) 3,129.36 (543.65) 12.31 (9.65) -13,456.03 (5,600.04) -412.50 (52.28) -1.86** (0.04)	9,810.22 (815.98) 13,453.55 (1,535.07) 3,835.06 (3,007.05) 26,608.57 (4,102.52) -36,643.51 (2,426.55) -27,976.25 (2,256.33) 9,586.69 (1,087.03) -66,226.68 (3,132.03) -69,032.79 (2,565.40) -35,238.03 (2,766.87) -18,248.89 (2,835.19) 443.11 (1,086.89) -2,170.01 (1,366.39) -998.80 (1,123.49) 1.11 (2.04) 1.94 (32.04) -53.57** (24.92) -38.38* (20.94) -164.84 (51.66) 3.68 (0.08) 1,520.70 (72.32) 3,207.74 (533.38) 12.23 (9.62) -12,725.43 (5,584.40) -412.79 (52.24) -1.85** (0.04)
# parcels on block Binary variable for abandoned property on block (1 = one) ^h Binary variable for abandoned property on block (1 = two) ^h Binary variable for abandoned property on block (1 = three) ^h Binary variable for abandoned property on block (1 = four) ^h Binary variable for abandoned property on block (1 = five) ^h Binary variable for abandoned property on block (1 = six) ^h Binary variable for abandoned property on block (1 = seven) ^h Binary variable for abandoned property on block (1 = eight) ^h Binary variable for abandoned property on block (1 = nine) ^h Binary variable for abandoned property on block (1 = ten) ^h Binary variable for abandoned property on block (1 = none) ⁱ		-85.68 (21.45) -6,467.89 (1,233.88) -7,904.21 (1,804.12) -5,095.70 (2,386.47) -8,196.78 (2,866.89) -10,043.71 (3,339.30) -7,603.99** (3,700.38) -3,245.70 (4,663.28) -6,121.75 (4,477.79) -1,639.16 (6,158.01) -3,910.96 (2,969.98)	-83.13 (21.07) 6,715.37 (1,042.91)
Constant R2	-2,836,082.28** (143,150.11) 0.50	-2,926,984.12** (141,725.75) 0.50	-2,937,331.35** (141,168.46) 0.50

* P < .10 ** P < .05 Shown are the B Coefficients with Standard Errors in Parenthesis a. Omitted variable = frame b. Omitted variable = unattached c. Omitted variable = house without garage d. Omitted variable = more four story house e. Omitted variable = non-abandoned f. Omitted variable = Fall sale g. Omitted variable = more than 600 feet h. Omitted variable = more than 10 abandoned properties on block i. Omitted variable = no abandoned property on block