structure
The building itself: construction materials, condition, architectural style, and the structural elements the assessor recorded.
Represents the physical building structure with detailed architectural and construction information including materials, conditions, styles, and structural elements.
The question it answers
What is this house, physically?
The feature vector, taken from the source of record rather than from a listing agent. Assessor and parcel records are authoritative; listing fields are agent-entered, inconsistent between markets, and absent entirely for a property that was never listed.
Why it matters
Everything about the building that is not its shape or its rooms. Those are lot and layout; this class is what the building is made of and what condition it is in.
The distinction matters because the three come from different parts of an assessor's record and are updated on different cycles. Merging them into one property record loses the ability to update the one that changed.
In practice
The class is wide because assessors record at that granularity: exterior wall material and its condition, primary and secondary, then roof, foundation, framing and finish, each carrying its own condition.
Attachment type carries more than it appears to. Detached, semi-detached and attached distinguish a house from a duplex half from a townhouse, which is a different comparable set rather than a different adjustment on the same one.
Sub-areas are the other field worth knowing. An assessor records areas separately — living area, garage, porch, unfinished space — each flagged for whether it is heated, which is what allows gross living area to be computed rather than taken on trust.
Properties
| Property | Type | Definition |
|---|---|---|
source_http_request | object | HTTP request configuration for retrieving this data. |
request_identifier | string | null | Identifier value that should be substituted into the source HTTP request to retrieve this specific data. |
architectural_style_type | string | null | Refers to the style, structure, and aesthetics of a building. MidCenturyModernContemporaryVictorianRanchCraftsmanTudorMinimalistColonialFarmhouse |
attachment_type | string | null | Indicates the structural relationship of the dwelling to other units. 'Attached' means the unit shares walls on both sides with adjacent dwellings (e.g., rowhouse or townhouse); 'SemiDetached' means it shares a wall with one other unit (e.g., duplex); 'Detached' means the unit stands alone with no shared walls. AttachedSemiDetachedDetached |
exterior_wall_material_primary | string | null | Primary material used for exterior wall cladding and structure. BrickNatural StoneManufactured StoneStuccoVinyl SidingWood SidingFiber Cement SidingMetal SidingConcrete BlockEIFSLogAdobePrecast ConcreteCurtain Wall |
exterior_wall_material_secondary | string | null | Secondary material used for exterior wall accents or trim. Brick AccentStone AccentWood TrimMetal TrimStucco AccentVinyl AccentDecorative Block |
exterior_wall_condition_primary | string | null | Observed condition of the exterior wall materials. NewExcellentGoodFairPoorDamaged |
exterior_wall_condition | string | null | Observed condition of the exterior wall materials. NewExcellentGoodFairPoorDamaged |
exterior_wall_insulation_type | string | null | Type of insulation used in exterior wall cavities. Fiberglass BattBlown CelluloseSpray FoamRigid Foam BoardReflective BarrierRock WoolNatural FiberUnknown |
exterior_wall_insulation_type_primary | string | null | Type of insulation used in exterior wall cavities. Fiberglass BattBlown CelluloseSpray FoamRigid Foam BoardReflective BarrierRock WoolNatural FiberUnknown |
exterior_wall_condition_secondary | string | null | Observed condition of the exterior wall materials. NewExcellentGoodFairPoorDamaged |
exterior_wall_insulation_type_secondary | string | null | Type of insulation used in exterior wall cavities. Fiberglass BattBlown CelluloseSpray FoamRigid Foam BoardReflective BarrierRock WoolNatural FiberUnknown |
flooring_material_primary | string | null | Primary flooring material covering floor surface. Solid HardwoodEngineered HardwoodLaminateLuxury Vinyl PlankSheet VinylCeramic TilePorcelain TileNatural Stone TileCarpetArea RugsPolished ConcreteBambooCorkLinoleumTerrazzoEpoxy Coating |
flooring_material_secondary | string | null | Secondary flooring material if multiple types are used in different areas. Solid HardwoodEngineered HardwoodLaminateLuxury Vinyl PlankCeramic TileCarpetArea RugsTransition Strips |
subfloor_material | string | null | Material used for subfloor structure beneath finish flooring. PlywoodOSBConcrete SlabEngineered WoodParticle BoardUnknown |
flooring_condition | string | null | Overall condition of flooring materials and installation. NewExcellentGoodFairPoorDamaged |
interior_wall_structure_material | string | null | Structural material used for interior wall framing. Wood FrameSteel FrameConcrete BlockBrickLoad BearingNon-Load Bearing |
interior_wall_structure_material_primary | string | null | Structural material used for interior wall framing. Wood FrameSteel FrameConcrete BlockBrickLoad BearingNon-Load Bearing |
interior_wall_structure_material_secondary | string | null | Structural material used for interior wall framing. Wood FrameSteel FrameConcrete BlockBrickLoad BearingNon-Load Bearing |
interior_wall_surface_material_primary | string | null | Primary surface material covering interior walls throughout most of the structure. DrywallPlasterWood PanelingExposed BrickExposed BlockWainscotingShiplapBoard and BattenTileStone VeneerMetal PanelsGlass PanelsConcrete |
interior_wall_surface_material_secondary | string | null | Secondary material used for interior wall accents, trim, or feature walls. WainscotingChair RailCrown MoldingBaseboardsWood TrimStone AccentTile AccentMetal AccentGlass InsertDecorative PanelsFeature Wall Material |
interior_wall_finish_primary | string | null | Primary finish treatment applied over interior wall surfaces. PaintPrimer and PaintTextured PaintNatural FinishStainClear CoatExposed Natural |
interior_wall_finish_secondary | string | null | Secondary finish treatment for accent areas or decorative elements. WallpaperWall DecalsDecorative PlasterFaux FinishFabric Wall CoveringMuralsDecorative Paint Technique |
interior_wall_condition | string | null | Overall condition of interior wall surfaces and finishes. NewExcellentGoodFairPoorDamaged |
roof_covering_material | string | null | Material used for the primary roof covering. 3-Tab Asphalt ShingleArchitectural Asphalt ShingleMetal Standing SeamMetal CorrugatedClay TileConcrete TileNatural SlateSynthetic SlateWood ShakeWood ShingleTPO MembraneEPDM MembraneModified BitumenBuilt-Up RoofGreen Roof SystemSolar Integrated Tiles |
roof_underlayment_type | string | null | Type of underlayment beneath roof covering. Felt PaperSynthetic UnderlaymentRubberized AsphaltUnknown |
roof_structure_material | string | null | Material used for roof structural support. Wood TrussWood RafterSteel TrussConcrete BeamEngineered Lumber |
roof_design_type | string | null | Architectural design of the roof structure. GableHipFlatMansardGambrelShedSaltboxButterflyBonnetClerestoryDomeBarrelCombination |
roof_condition | string | null | Visible condition of the roof covering and structure. NewExcellentGoodFairPoorDamagedLeaking |
roof_age_years | integer | null | Estimated age of the roof covering in years. |
roof_date | string | null | Date when the roof was built (format: YYYY, YYYY-MM, or YYYY-MM-DD) |
gutters_material | string | null | Material used for gutter system. AluminumVinylSteelCopperGalvanized Steel |
gutters_condition | string | null | Condition of gutters and downspout system. NewGoodFairPoorMissingDamaged |
number_of_stories | number | null | Indicates the total number of above-ground stories (floors) in the structure. |
roof_material_type | string | null | Refers to the material a roof is made of. ManufacturedEngineeredWoodTerazzoBrickWoodCinderBlockConcreteShingleCompositionLinoleumStoneCeramicTileBlockWoodSidingImpactGlassCarpetMarbleVinylTilePouredConcreteMetalGlassLaminate |
foundation_type | string | null | Type of foundation system supporting the structure. Slab on GradeCrawl SpaceFull BasementPartial BasementPier and BeamBasement with WalkoutStem Wall |
foundation_material | string | null | Primary material used in foundation construction. Poured ConcreteConcrete BlockStoneBrickTreated Wood PostsSteel PiersPrecast ConcreteInsulated Concrete Forms |
foundation_waterproofing | string | null | Type of waterproofing system used on foundation. MembraneCoatingDrainage SystemUnknown |
foundation_condition | string | null | Visible condition of the foundation system. ExcellentGoodFairMinor CracksMajor CracksSettlingWater DamageUnknown |
ceiling_structure_material | string | null | Structural material supporting the ceiling. Wood JoistsSteel JoistsConcreteExposed BeamsTruss System |
ceiling_surface_material | string | null | Material used for ceiling surface finish. DrywallPlasterWood PlanksAcoustic TileMetal PanelsSuspended GridCofferedTrayExposed Structure |
ceiling_insulation_type | string | null | Type of insulation above ceiling. Fiberglass BattBlown InsulationSpray FoamRigid BoardUnknown |
ceiling_height_average | number | null | Average ceiling height in feet. |
ceiling_condition | string | null | Overall condition of ceiling materials and structure. NewExcellentGoodFairPoorDamaged |
exterior_door_material | string | null | Material used for exterior door construction. Solid WoodWood CompositeSteelFiberglassAluminumGlassVinylWrought IronSecurity Door |
interior_door_material | string | null | Material and construction of interior doors. Solid WoodHollow CoreSolid CoreGlass PanelMetalCompositeMoldedBifoldPocket DoorBarn Door |
window_frame_material | string | null | Material used for window frame construction. VinylWoodAluminumFiberglassSteelCompositeAluminum Clad WoodVinyl Clad Wood |
window_glazing_type | string | null | Type and features of window glazing system. Single PaneDouble PaneTriple PaneLow-E CoatedTemperedLaminatedImpact ResistantArgon FilledTintedSmart Glass |
window_operation_type | string | null | Operational mechanism and style of windows. Double HungSingle HungCasementSlidingAwningPictureBayBowGardenSkylightsJalousieFixed |
window_screen_material | string | null | Material used for window screens. AluminumFiberglassPet ScreenSolar Screen |
primary_framing_material | string | null | Primary material used for structural framing system. Wood FrameSteel FrameConcrete BlockPoured ConcreteMasonryEngineered LumberPost and BeamLog Construction |
secondary_framing_material | string | null | Secondary structural materials for support beams and lintels. Steel BeamsEngineered LumberConcrete LintelsWood Beams |
structural_damage_indicators | string | null | Observable indicators of structural damage or issues. Foundation CracksWall CracksCeiling CracksSagging FloorsSagging RoofDoor/Window MisalignmentWater DamageTermite DamageSettlement IssuesNone Observed |
finished_base_area | integer | null | Finished ground-level base area (first-floor footprint) in square feet. |
unfinished_base_area | integer | null | Unfinished ground-level base area in square feet. |
finished_basement_area | integer | null | Finished basement area in square feet. |
unfinished_basement_area | integer | null | Unfinished basement area in square feet. |
finished_upper_story_area | integer | null | Finished upper story area (above the ground floor) in square feet. |
unfinished_upper_story_area | integer | null | Unfinished upper story or attic/loft space in square feet. |
Provenance and coverage
A record of this class is validated against the same definition whatever jurisdiction it came from, which is what makes two counties comparable without a per-county adapter. A jurisdiction appears below only where a committed configuration serves this class's surface.
- Lee, Florida
- Palm Beach, Florida
- Miami-Dade, Florida
- Orange, Florida
- Santa Clara, California