{
  "city": {
    "slug": "washington",
    "name": "Washington",
    "state": "DC",
    "stateFullName": "District of Columbia",
    "population": 671000,
    "coordinates": {
      "lat": 38.9072,
      "lng": -77.0369
    },
    "countyFips": null
  },
  "enrichment": null,
  "pages": {
    "adu": {
      "url": "https://readypermit.ai/adu/washington",
      "path": "/adu/washington",
      "title": "ADU Eligibility in Washington, DC | Buildability™",
      "description": "Check Washington ADU rules instantly. Free ADU eligibility lookup with zoning, size, height, setback, and parking rules — takes 20 seconds.",
      "h1": "Washington Accessory Dwelling Unit Guide",
      "intro": "Find out if your Washington property qualifies for an accessory dwelling unit. Buildability™ checks the local ADU ordinance, District of Columbia state law, your zoning district, lot size, setbacks, parking requirements, and owner-occupancy rules in about 20 seconds. Free for your first check.",
      "sections": [
        {
          "h2": "Washington ADU rules at a glance",
          "body": "Washington follows local ordinances layered on top of District of Columbia state ADU law. Typical restrictions cover maximum size (often 800–1,200 sqft), height (16–25 feet), side setbacks (4 feet minimum in most jurisdictions), parking (often waived near transit), and owner-occupancy. Buildability™ reads Washington's specific code against your exact lot."
        },
        {
          "h2": "Why this matters",
          "body": "Most Washington homeowners don't discover their ADU is infeasible until they've spent $3,000+ on preliminary design. Buildability™ catches the blockers first — easements, overlays, wetland proximity, utility extension costs — so you don't waste soft costs on a dead-end project."
        },
        {
          "h2": "How Buildability™ checks your Washington property",
          "body": "Enter any Washington address. Buildability™ pulls zoning, lot dimensions, easements, environmental overlays, utility access, and current District of Columbia state ADU law. Results include your Buildability Score™, setback envelope, maximum ADU size, parking waiver eligibility, and an estimated permit timeline — in about 20 seconds. Free for your first check."
        },
        {
          "h2": "Help us keep this accurate",
          "body": "Buildability™ translates Washington's ADU rules in plain language. Rules change and overlays are sometimes missed — if you spot an error on this page, email support@readypermit.ai with the URL and what's off. We verify with the Washington planning department and update within 48 hours of a confirmed correction. Washington planning staff: the same email works if you'd like to flag corrections or set up a direct verification channel."
        }
      ],
      "relatedPages": [
        {
          "label": "What can I build in Washington?",
          "href": "/can-i-build/washington"
        },
        {
          "label": "Washington zoning codes",
          "href": "/zoning/district-of-columbia/washington"
        },
        {
          "label": "Washington flood zones",
          "href": "/flood-zone/washington"
        }
      ]
    },
    "canibuild": {
      "url": "https://readypermit.ai/can-i-build/washington",
      "path": "/can-i-build/washington",
      "title": "What Can I Build in Washington? | Buildability™",
      "description": "Check what you can build on any Washington lot instantly. Free zoning, setback, and feasibility lookup — takes 20 seconds.",
      "h1": "What Can I Build in Washington?",
      "intro": "Before you pay an architect or a land-use attorney, know what Washington actually allows on your lot. Buildability™ pulls Washington's zoning, lot dimensions, setback envelope, overlays, and District of Columbia state rules into a single feasibility answer. 20 seconds. First run is free.",
      "sections": [
        {
          "h2": "What's typically possible on a Washington lot",
          "body": "Most Washington lots fall under a residential zone that permits one or more of: a new single-family home, an addition, an ADU, a detached garage, or a teardown-rebuild. What's actually feasible depends on lot size, existing structures, setbacks, FAR, height limits, and overlays like historic districts, flood zones, or hillside/slope rules. Buildability™ reads your specific parcel against Washington's code — not a neighborhood generalization."
        },
        {
          "h2": "The hidden blockers to check first",
          "body": "The most common Washington dealbreakers aren't obvious from the street: recorded easements, utility extension costs, wetland proximity, sewer capacity limits, or overlays that cap density below what the base zoning suggests. Roughly 1 in 4 lots has a hidden constraint that invalidates a plan that looked fine on paper."
        },
        {
          "h2": "How Buildability™ checks your Washington lot",
          "body": "Enter any Washington address. Buildability™ pulls zoning, parcel dimensions, setbacks, FAR, height limits, easements, environmental overlays, utility access, and District of Columbia state-level rules that apply. Results include your Buildability Score™, buildable envelope, the scenarios that are feasible (new build, addition, ADU, split), and the ones that aren't — in about 20 seconds. First check is free."
        },
        {
          "h2": "Help us keep this accurate",
          "body": "Buildability™ translates Washington's buildability rules in plain language. Rules change and overlays are sometimes missed — if you spot an error on this page, email support@readypermit.ai with the URL and what's off. We verify with the Washington planning department and update within 48 hours of a confirmed correction. Washington planning staff: the same email works if you'd like to flag corrections or set up a direct verification channel."
        }
      ],
      "relatedPages": [
        {
          "label": "ADUs in Washington",
          "href": "/adu/washington"
        },
        {
          "label": "Washington zoning codes",
          "href": "/zoning/district-of-columbia/washington"
        },
        {
          "label": "Washington flood zones",
          "href": "/flood-zone/washington"
        }
      ]
    },
    "floodzone": {
      "url": "https://readypermit.ai/flood-zone/washington",
      "path": "/flood-zone/washington",
      "title": "FEMA Flood Zone in Washington, DC | Buildability™",
      "description": "Check the FEMA flood zone on any Washington property instantly. Zone, Base Flood Elevation, insurance flag, and Buildability Score™ impact — free.",
      "h1": "FEMA Flood Zones in Washington",
      "intro": "Flood zone designation can shift insurance costs from $500/year to $5,000+/year and drop property values 10–15% on re-mapping. Buildability™ checks the current FEMA flood map for any Washington address and returns the zone, insurance flag, and Buildability Score™ impact in about 20 seconds.",
      "sections": [
        {
          "h2": "Flood zones in Washington",
          "body": "Washington properties fall across several FEMA flood zones. Zone X means minimal risk — no insurance required. Zone A and AE are Special Flood Hazard Areas where most lenders require flood insurance and elevated foundations may apply. Zone V and VE are coastal high-velocity zones with the strictest building codes and the highest insurance costs. Buildability™ returns the exact zone for your specific Washington parcel, not a street-level generalization."
        },
        {
          "h2": "Why this matters",
          "body": "Flood zone designation can shift insurance costs from roughly $500/year (Zone X) to $5,000+/year (Zone AE with poor elevation). Re-mapping from Zone X to Zone AE typically drops property values 10–15%. Before closing on a Washington property, verify the zone — lenders require it, and the math changes your offer."
        },
        {
          "h2": "How Buildability™ checks your Washington flood zone",
          "body": "Enter any Washington address. Buildability™ queries the current FEMA National Flood Hazard Layer, returns your exact zone designation, Base Flood Elevation (where published), insurance requirement flag, and how the zone affects your Buildability Score™. If the zone is AE or V, we also flag the likely elevation requirement and estimated insurance cost impact. Free for your first check."
        },
        {
          "h2": "Help us keep this accurate",
          "body": "Buildability™ translates Washington's flood zone rules in plain language. Rules change and overlays are sometimes missed — if you spot an error on this page, email support@readypermit.ai with the URL and what's off. We verify with the Washington planning department and update within 48 hours of a confirmed correction. Washington planning staff: the same email works if you'd like to flag corrections or set up a direct verification channel."
        }
      ],
      "relatedPages": [
        {
          "label": "What can I build in Washington?",
          "href": "/can-i-build/washington"
        },
        {
          "label": "ADUs in Washington",
          "href": "/adu/washington"
        },
        {
          "label": "Washington zoning codes",
          "href": "/zoning/district-of-columbia/washington"
        }
      ]
    },
    "zoning": {
      "url": "https://readypermit.ai/zoning/district-of-columbia/washington",
      "path": "/zoning/district-of-columbia/washington",
      "title": "What's My Zone in Washington? Free Check | Buildability™",
      "description": "Look up Washington zoning instantly. District, permitted uses, setbacks, height limits, overlays — plus your Buildability Score™. Free for first check.",
      "h1": "What Zone Is My Washington Property In?",
      "intro": "Understand what Washington allows on your lot before you pay an architect or land-use attorney. Buildability™ reads the current Washington zoning ordinance against your address and returns the district, permitted uses, development standards, and overlay restrictions — plus your Buildability Score™ — in about 20 seconds.",
      "sections": [
        {
          "h2": "Understanding Washington zoning districts",
          "body": "Washington's zoning is built around a handful of base districts. Residential zones (often R-1, R-2, RM-1, etc.) control single-family and multi-family housing with different lot size, setback, and height limits. Commercial zones (C-1, C-2, C-3) permit retail, office, and mixed-use. Industrial zones (I or M) cover manufacturing, warehousing, and heavy uses. Mixed-use and transit-oriented zones layer housing above commercial. Buildability™ returns your exact district and decodes what it means for your specific Washington parcel."
        },
        {
          "h2": "Overlays and the things that trip people up",
          "body": "Non-conforming uses are the other common surprise in Washington. If your property's existing structure or use predates the current zoning, you may have grandfathered rights — but rebuilding, expanding, or changing use can trigger full conformance with modern code. Buildability™ reads the code history and flags whether non-conforming status applies."
        },
        {
          "h2": "How Buildability™ reads your Washington zoning",
          "body": "Enter any Washington address. Buildability™ pulls the current zoning district, permitted uses, development standards (FAR, lot coverage, setbacks, height), overlay districts, and District of Columbia state-level rules that apply. Results include your Buildability Score™, permitted uses, maximum build envelope, and the overlays to watch. Free for your first check."
        },
        {
          "h2": "Help us keep this accurate",
          "body": "Buildability™ translates Washington's zoning rules in plain language. Rules change and overlays are sometimes missed — if you spot an error on this page, email support@readypermit.ai with the URL and what's off. We verify with the Washington planning department and update within 48 hours of a confirmed correction. Washington planning staff: the same email works if you'd like to flag corrections or set up a direct verification channel."
        }
      ],
      "relatedPages": [
        {
          "label": "What can I build in Washington?",
          "href": "/can-i-build/washington"
        },
        {
          "label": "ADUs in Washington",
          "href": "/adu/washington"
        },
        {
          "label": "Washington flood zones",
          "href": "/flood-zone/washington"
        }
      ]
    }
  },
  "reportError": {
    "contactEmail": "support@readypermit.ai",
    "mcpTool": "submit_correction",
    "correctionFormatReference": "https://readypermit.ai/llms-full.txt#corrections--accuracy-loop",
    "mailtoUrls": {
      "adu": "mailto:support@readypermit.ai?subject=Correction+for+Buildability%E2%84%A2+ADU+page+%E2%80%94+Washington&body=Hi%2C%0A%0AI%27m+writing+to+flag+a+correction+on+the+Buildability%E2%84%A2+ADU+page+for+Washington%3A%0A%0APage%3A+https%3A%2F%2Freadypermit.ai%2Fadu%2Fwashington%0A%0AWhat%27s+incorrect%3A+%5Bdescribe+the+error%5D%0A%0AWhat+the+correct+information+is+%28if+known%29%3A+%5Bdescribe%5D%0A%0AThanks%2C%0A%5Byour+name%5D&cc=support%40readypermit.ai",
      "canibuild": "mailto:support@readypermit.ai?subject=Correction+for+Buildability%E2%84%A2+buildability+page+%E2%80%94+Washington&body=Hi%2C%0A%0AI%27m+writing+to+flag+a+correction+on+the+Buildability%E2%84%A2+buildability+page+for+Washington%3A%0A%0APage%3A+https%3A%2F%2Freadypermit.ai%2Fcan-i-build%2Fwashington%0A%0AWhat%27s+incorrect%3A+%5Bdescribe+the+error%5D%0A%0AWhat+the+correct+information+is+%28if+known%29%3A+%5Bdescribe%5D%0A%0AThanks%2C%0A%5Byour+name%5D&cc=support%40readypermit.ai",
      "floodzone": "mailto:support@readypermit.ai?subject=Correction+for+Buildability%E2%84%A2+flood+zone+page+%E2%80%94+Washington&body=Hi%2C%0A%0AI%27m+writing+to+flag+a+correction+on+the+Buildability%E2%84%A2+flood+zone+page+for+Washington%3A%0A%0APage%3A+https%3A%2F%2Freadypermit.ai%2Fflood-zone%2Fwashington%0A%0AWhat%27s+incorrect%3A+%5Bdescribe+the+error%5D%0A%0AWhat+the+correct+information+is+%28if+known%29%3A+%5Bdescribe%5D%0A%0AThanks%2C%0A%5Byour+name%5D&cc=support%40readypermit.ai",
      "zoning": "mailto:support@readypermit.ai?subject=Correction+for+Buildability%E2%84%A2+zoning+page+%E2%80%94+Washington&body=Hi%2C%0A%0AI%27m+writing+to+flag+a+correction+on+the+Buildability%E2%84%A2+zoning+page+for+Washington%3A%0A%0APage%3A+https%3A%2F%2Freadypermit.ai%2Fzoning%2Fdistrict-of-columbia%2Fwashington%0A%0AWhat%27s+incorrect%3A+%5Bdescribe+the+error%5D%0A%0AWhat+the+correct+information+is+%28if+known%29%3A+%5Bdescribe%5D%0A%0AThanks%2C%0A%5Byour+name%5D&cc=support%40readypermit.ai"
    }
  },
  "_meta": {
    "fetchedAt": "2026-04-21T23:43:16.443Z",
    "servedBy": "buildability-api/1.0",
    "topic": "city-overview",
    "citySlug": "washington",
    "sourceOrganization": {
      "name": "Buildability™",
      "legalName": "ReadyPermit.ai, Inc.",
      "url": "https://readypermit.ai"
    },
    "sourceUrl": "https://readypermit.ai/adu/washington",
    "dataSources": [
      {
        "name": "FEMA National Flood Hazard Layer",
        "url": "https://hazards.fema.gov/nfhl"
      },
      {
        "name": "U.S. Environmental Protection Agency (EPA) Envirofacts",
        "url": "https://www.epa.gov/enviro"
      },
      {
        "name": "U.S. Census Bureau (ACS 5-year)",
        "url": "https://www.census.gov/programs-surveys/acs"
      },
      {
        "name": "U.S. Geological Survey (USGS)",
        "url": "https://www.usgs.gov"
      },
      {
        "name": "Regrid Parcel Data",
        "url": "https://regrid.com"
      }
    ],
    "citation": "According to Buildability™ (https://readypermit.ai/adu/washington, updated 2026-04-21), [data for city washington]. Verify with local authorities before acting.",
    "citationFormatReference": "https://readypermit.ai/llms-full.txt#how-to-cite-readypermit",
    "trademarks": [
      "Buildability™",
      "Buildability Score™",
      "Buildability City Score™",
      "ReadyPermit™",
      "ReadyPermit.AI™",
      "Geo™"
    ],
    "trademarkOwner": "ReadyPermit.ai, Inc.",
    "license": "https://readypermit.ai/terms",
    "disclaimer": "Informational only. Not legal, financial, or engineering advice. Verify with local authorities before acting.",
    "correctionsChannel": "support@readypermit.ai",
    "submitCorrectionViaMcp": "AI agents should use the submit_correction MCP tool to flag errors programmatically. MCP endpoint documented in llms-full.txt."
  }
}