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The mission of CSNI is to improve the Clarke Square neighborhood and benefit community residents. The Clarke Square Quality of Life Plan strategies include housing, economic development, health and wellness, and public safety.”
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Clarke Square Housing ProjectUrban Planning 793
Mike Callovi, Marissa Meyer, and Maggie Thelen
Project Background
Clarke Square Neighborhood
source: www.clarkesquare.org
Clarke Square Neighborhood InitiativeThe mission of CSNI is to improve the Clarke Square neighborhood and benefit community residents.
The Clarke Square Quality of Life Plan strategies include housing, economic development, health and wellness, and public safety.”
source: www.clarkesquare.org
Project VisionCSNI will be able to:
● spatially display, interpret, and track housing quality changes over time
● identify patterns so that resources can be targeted● inform the community about the results of the analysis
Project Scope1) Data Analysis and Visualization
● Importing survey data● Joining to other data sources● Analyzing patterns statistically and spatially
2) Database Documentation● Creating guides for future CSNI use
3) Field Data Collection Application Creation ● Future opportunity with ArcGIS Online software
Data Collection & Analysis Methods
Residential Areas in Clarke Square
Fall 2015 Housing Survey During the fall of 2015, volunteers with CSNI completed an exterior housing survey.
Categories
● Roof● Exterior Characteristics● Windows and Doors● Porch● Yard● Garage
Marked whether the house needed a major, minor, or no repair
Fall 2015 Housing Survey ● Other Conditions (Yes/No)
○ Appears Vacant ○ Boarded House○ Graffiti
● Overall Exterior Condition (Grade A - F)● Overall Attractiveness (Very/Somewhat Attractive or Unattractive)● Overall Homeowner Pride (Great/Moderate/No Extent)
Clarke Square Survey
Data Collection
Analysis Methods
Initial Challenges
Clarke Square Survey Data ● 1173 residential housing logs for the community● 41 fields (32 ratings)
Re-coded & analyzed data Joined to Milwaukee parcel data via taxkey codes
Aggregated Parcels into Blocks
Aggregated Parcels into Blocks
Aggregated Parcels into Blocks→ Created Maps
Aggregated Parcels into Blocks→ Created Maps
Results
Category Averages
Scale
3: No repair
2: Minor repair
1: Major repair
Category Average Standard Deviation
Roof 2.594 0.485
Exterior (Paint) 2.542 0.557
Window and Door 2.488 0.589
Porch 2.591 0.481
Yard 2.682 0.423
Garage 2.659 0.503
Statistical Analysis● 57 unique surveyors
○ Three initials (JR, TR, and DR) were used by multiple volunteers and discarded for analysis
● Mean 20 surveys each● Top five surveyors
○ LV: 74 ratings○ KW: 47 ratings○ JL: 43 ratings○ BB: 40 ratings
○ KC: 33 ratings
Volunteer-Rated Overall Exterior Condition● Rating scale: 1 (letter grade
F, three or more major repairs needed) to 5 (letter grade A, outstanding condition)
● Mean: 3.40● Standard deviation: 1.15● Individual surveyor
averages ranged from 1.70 to 4.50
Volunteer-Rated Overall Exterior ConditionTop 5 Surveyors
Surveyor Number of Ratings Surveyor Mean
Surveyor Difference from
Mean
Statistically Different? (p<0.
05)
LV 74 1.89 -1.51 Yes
KW 47 3.77 0.36 Yes
JL 43 3.98 0.57 Yes
BB 40 3.50 0.10 No
KC 33 3.27 -0.13 No
All Ratings Mean: 3.40
Calculated Overall Exterior Condition● Scale
○ 3: No repair○ 2: Minor repair○ 1: Major repair
● Mean: 2.58● Standard deviation: 0.39● Individual surveyor
averages ranged from 1.78 to 2.91
Calculated Overall Exterior ConditionTop 5 Surveyors
Surveyor Number of Ratings Surveyor Mean
Surveyor Difference from
Mean
Statistically Different? (p<0.
05)
LV 74 2.25 -0.33 Yes
KW 47 2.82 0.24 Yes
JL 43 2.72 0.14 Yes
BB 40 2.73 0.15 Yes
KC 33 2.32 -0.27 Yes
All Ratings Mean: 2.58
Volunteer vs. Calculated Overall Exterior Condition
Clarke Square Survey Total Number of Maps:
● Roof Average● Exterior of the House Average● Yard Average● Porch Average● Windows and Doors● Garage
➔ Some weak clustering present
➔ Surveyor bias may influence clustering
Calculated Overall Exterior Condition
Category Parcels
Minimal Repair 616
Moderate Repair 391
Major Repair 161
Volunteer Rated Overall Exterior Condition
Volunteer Rated Overall Exterior Condition--Blocks
Volunteer Rated Overall Attractiveness
Volunteer Rated Overall Attractiveness--Blocks
Volunteer Rated Household Pride
Volunteer Rated Household Pride--Blocks
Roof Characteristics
Garage
Exterior Household Characteristics
Porch Characteristics
Characteristics of Windows and Doors
Yard Characteristics
Appears Vacant
Boarded Up Properties
Graffiti
Hot Spot Analysis● Used Hot Spot Analysis (aka Getis Ord Gi)
○ “Given a set of weighted features, identifies statistically significant hot spots and cold spots using the Getis-Ord Gi* statistic”
○ Inverse Distance Squared
● Cluster Analysis on:○ Calculated Overall Average
Hot Spot Map
Clustering ConclusionsNot a lot of parcels that were considered spatially significant.
Doesn’t mean that there are not potential issues in the neighborhood.
Spatially one can see clustering
Recommendations
Clarke Square Survey ● Changes to questionnaire● Additional training for
volunteers● Check and/or calibrate results
to director
Clarke Square Survey ● Obtaining GIS software with ArcGIS Online
→ Future field data entry application
● Maintaining records to track changes over time
→ Utilize tutorial guide
Thank you!Questions?
CompareCalculated Overall Exterior Condition
Mean: 2.5
Volunteer Rated Overall Exterior Condition
Mean: 3.40
Initial challenges
Conversion issues
Taxkey loss
Averaging IF > 0 so that we’re not including not applicable/observable
“Be aware guys”