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”