Home year built

#17 of 500 by model importanceInteger · year

Four-digit year of original construction for the primary building on the parcel. Known or imputed for 80.7 million addresses — 67.4% of the addresses Faraday knows.

At a glance

Coverage today
67.4%
Typical coverage
66.3%
Addresses with a value
80.7M
Median
1,981 years
Most values come
from the address
Latest collection
Oct 1, 2026

Distribution

How values are spread across the records that have one. Use it to check that the attribute tells records apart: when one value holds nearly everyone, it will not separate audiences much. Each bar is a band of values, lowest on the left. The shading groups the bars into percentile bands.

Share by value

n = 80,710,668

Share of addresses with a known value in each band. The middle 50% falls between 1,958 and 2,001 years, shaded darkest.

P10
1,930
P25
1,958
Median
1,981
P75
2,001
P90
2,013

P10 means 10% of addresses have a value at or below this one, and P90 means 90% do. P25 and P75 bound the middle half. The median is the middle: half are below it, half above.

Median over time

1,981 years

1,980 years → 1,981 years across 12 collections, shaded between P25 and P75. Estimated from a 1% sample of addresses.

Oct 2025Dec 2025Feb 2026Apr 2026Jun 2026Sep 2026Oct 2026

Coverage

How widely Faraday has this attribute, and how precise its values are. How many of your own records get a value also depends on how many of them Faraday matches. The state map shows where coverage is thin. Coverage over time shows whether it is growing or shrinking.

Coverage by state

Percentage of addresses in each state with a value.

Coverage over time

67.4% today

Share of addresses holding a value at each monthly snapshot. A value carries forward for one year.

Jul 23Nov 24Mar 25Jul 25Dec 25Apr 26Oct 26

How we arrive at a value

Latest collection: 103,037,911 addresses

Whether a value was observed on the person themselves, carried from their address, or estimated from the people around them.

On the person — 0%
Not used for this attribute — no value is inherited this way.
From address — 100%
Carried from what we know about the household at their address.
From geography — 0%
Not used for this attribute — no value is inherited this way.

Coverage, in context

Where 67.4% sits on the catalog’s own coverage range.

catalog min 0%max 100%

Higher coverage than 72% of address-level attributes in the catalog

Freshness

Whether the values reflect today. A long gap since the latest collection means they may lag behind what is true now.

Collections

How recently this was collected, and how often a new collection arrives. Each bar is one collection, sized by how many addresses it carried. Gaps are real — collection is periodic, not continuous.

Oct 1, 2026
latest collection
24 days
since the latest collection
monthly
new collection cadence
Oct 25Dec 25Feb 26Apr 26Jun 26Sep 26

Change between collections

How much values move between collections. Income or life events should move; heavy change in something steady can mean noisy data.

0.1%

of addresses changed value between the two most recent collections — 200.5× steadier than the catalog median of 16.0%.

Went down 0.0%Unchanged 99.9%Went up 0.0%

Contribution ledger

34 ingestions

2 authorities contributed since Jul 2023.

ObservedIngestedCountID
159,411,145eb9d843a-e90f-4c0f-a6a1-6407824973f5
158,647,96937a05688-5576-4b35-a37f-ed31a1298842
158,084,49662d317f2-489c-456e-b464-9cfab59f2deb
263,433,64974d6c94c-8e2b-48fe-a704-50c99ad3cdde
266,506,942c5492806-a892-460e-aba1-ee78ffb29c5b

Related attributes

Attributes whose descriptions are closest to this one.

Neighbors found Oct 2026.

Use it in the API

Send an email, phone, or address. Get Home year built back in real time.

  1. Add home_year_built to a project.
  2. Send an email, phone, or address to the project's append endpoint. The response carries Home year built for the matched person.
curl -X POST 'https://api.pro.faraday.ai/v1/projects/YOUR_PROJECT_ID/append' \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
      "email": "jane.doe@example.com"
    }'
→ {"attributes":{"home_year_built":1981}}
Get it by APIAppend to a fileRead the API docs

Technical details

null in any row means the label does not apply, or is not recorded, for this attribute.

API name
The field to request through the API, and the key it comes back under in a payload.
home_year_built
Category
The catalog group the attribute is filed under.
fig/property
Type · unit
The kind of value and, where it has one, its unit of measure. Counts on this page are in addresses, whatever the unit.
Integer · year
Statistical type
How the values are meant to be read: a measured amount, one of a ranked set, one of an unordered set, or several from an unordered set. The chart's form comes from the published values; for categories without a rank prefix, this label decides whether they are listed in rank order or by size.
interval
Allowed values
The full list of values, when the attribute has a fixed set.
null
Derivations
How the value is produced, each with its definition.
Observed
— the attribute is directly observed.
How values combine
How the values from the attribute's sources become the one value delivered.
Uses the first available of up to 2 source fields, in priority order.
Directionality
For ordered values, what a higher value means.
Higher value means more recent year.
Deprecation
True when the attribute is being retired; choose another for new work.
false
API reference