2301 N Central Ave, Phoenix, AZ 85004
Generated March 11, 202633.4267, -112.0736
Moderate Risk Site
Budget 8-15% above standard for foundation work due to soil conditions.
Prefab Gap Coverage Available
This site scores 52/100 for soil risk and 7/100 for exposure. Protect your margin with installation gap coverage — covers the window between delivery and certificate of occupancy when standard builders risk doesn’t apply.
Detailed Analysis
Phoenix allows one ADU per single-family lot. Max 1,000 sq ft or 50% of primary dwelling, whichever is less. No owner-occupancy requirement per HB 2720.
What This Means for Your Build
- This site is ADU eligible — up to 1 unit, max 1,000 sq ft each
- Budget $2,000-5,000 for permits and plan review in Phoenix
- Timeline: plan review typically 4-8 weeks in Phoenix
Permit Checklist — Phoenix
Must meet R-1 setback requirements
Submit to Phoenix Development Services
Signed by licensed professional
Water/sewer tap or septic assessment
Recommended but not required
HB 2720 limits HOA ability to prohibit ADUs
For fire access and sprinkler requirements
Development impact fees apply
Parcel Information
Glenbar loam, 0 to 1 percent slopes. Moderate shrink-swell — standard foundation with moisture management. Moderate caliche — budget for potential excavation challenges.
Cost Impact: 3-8% above standard
What This Means for Your Build
- Budget 8-15% extra for foundation reinforcement — thickened slab edges or pier supports
- Corrosive soil — use epoxy-coated rebar and corrosion-resistant fasteners
Minimal flood hazard area — outside the 500-year floodplain
Insurance Estimate: Not required — optional coverage ~$400-600/yr
What This Means for Your Build
- Minimal flood risk — no additional flood-related budget needed
- Standard drainage and grading practices are sufficient
- Flood insurance is optional but recommended for any property
No wildfire risk to structures at this location. The site is in a developed area where wildfire risk to buildings is negligible.
Defensible Space
Standard landscaping practices sufficient for this risk level.
Low seismic risk (PGA 0.077g). Standard residential construction with basic seismic provisions per IRC/IBC. No significant cost impact expected.
What This Means for Your Build
- Low seismic risk — standard construction practices are sufficient
- No special seismic upgrades needed beyond code minimums
Limited fire protection (estimated PC 7). Insurance rates may be higher due to distance from fire services. Consider fire-resistant construction materials.
Next Steps
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Disclaimer: This report uses publicly available data from government sources (Census, USDA, FEMA, USFS, USGS) and is intended as a preliminary site assessment tool. It does not replace a professional geotechnical investigation, Phase I environmental assessment, or formal survey. Risk scores are estimates based on available data. Consult licensed professionals before making construction or investment decisions. Data accuracy depends on source agency update schedules.