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Best Housing Practices. Diversity, Affordability, Community, and Security. Best Housing Practices Affordability Diversity; life cycle housing Affordable Housing Density impacts Income groups. Neighborhoods & Community Spatial layout Common spaces Safety & Security Access Territory.
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Best Housing Practices Diversity, Affordability, Community, and Security
Best Housing Practices Affordability Diversity; life cycle housing Affordable Housing Density impacts Income groups Neighborhoods & Community Spatial layout Common spaces Safety & Security Access Territory Today’s Agenda
Life cycle housing Density of 6-7 du/acre Cost effective site development/construc. Affordable single family homes for moderate income households Affordable multi-family housing for low income households Use government programs to aid mix Mix housing within market limits Ewing’s Best Housing Practices
Offer life cycle housing • Projects with housing types, sizes, prices for singles, young families, empty nesters • Advantages: • Social networks persist • Children stay in familiar schools • Elderly remain near family, friends • Demand taps many market segments • Opportunity to integrate affordable units
Affordability and Income • Affordable housing: monthly expenses below 30% of gross household income • Rent or principal and interest payments • Utilities, taxes, and insurance • Income classes • Moderate: 80-120% of median income • Low: 50-80% of median income • Very low: below 50% of median income
Target net density 6-7 du/acre average without crowded look Single family detached zero lot line Z lots zipper lots granny flats small lots, short setbacks Single family attached town houses Multi-family attached duplex triplex fourplex apartments low rise high rise stacked flats Density Creates Affordability
Hard Costs: Detached Housing Land, site improvement, construction costs vary by housing type
Z lot: narrow, angled houses, windows on 4 sides (vs zero lot line blank wall) Zipper lot: wider with houses parallel to street Alternative width lot: some houses end on, some parallel
Amberleigh, Mill Creek WA • Appearance: modest s.f. homes of various styles on 15 acre site in suburban Seattle • Actually subdivision of 88 duplex & 4-plex units; net density = 7.6 du/acre; gross = 5.8 • Common walls concealed • Garages in hidden parking courts (44’ x 64’); 4 spaces/unit; total 352 spaces plus on-street • Lots average 5000 sq ft; 11’ setbacks • 1/2 ac. community park; 50’ native plant buffer
Amberleigh Houses & Parking 1 drive per 4 units Hidden parking court & garages
Amberleigh Common Space Community park
Security Concerns • Jane Jacobs Life and Death of GreatAmerican Cities (1961) • Demarcate public & private spaces • Maximize eyes on the street • Promote regular sidewalk activity • Design fine grain building patterns (not superblocks)
Defensible Space • Oscar Newman Creating Defensible Space (1966) • Goal: reduce crime opportunities by design • Natural surveillance (eyes on street) • Access control (limit access sts & paths) • Territorial reinforcement (express ownership) • Implementation: design safety reviews(parking, landscaping, lighting)
3 single family types Private (darkest), semiprivate, semipublic, & public (lightest) space (most eyes on st)
Walkup apartments Walkup apartments and their space controls (some eyes on st)
Highrise apartments Elevator apartments & space control (no eyes on st)
Comparison of outdoor space/housing type Town houses with little public (lightest), much private (darkest) space Garden apartments with some semiprivate space High rise apartments with all public space
5 Oaks Redevelopment • Divided 1/2 sq mile community into 10 mini-neighborhoods, each w/ 3-6 streets • Closed 35 streets & alleys; added gates; converted streets to cul de sacs • Reduced cut through traffic by 67%, crime by 26% • Raised housing values 15%
5 Oaks, Mini Neighborhoods Gate as constructed
Diggs Town, Norfolk VA • Redevelopment of a 1950s public housing project (428 units) to add: • porches • fences • blocks • streets • public spaces • neighborhood
Design Can Matter • Housing affordability • Sense of community • Safety and security