Build or buy new construction in Indianapolis and one question hangs over the first couple of tax bills: when does this thing get fully assessed, and how big is the jump when it does? The answer comes down to a single date — January 1 — and a rule most owners only learn after their bill suddenly climbs.
Indiana assesses property based on its condition as of the January 1 assessment date. For a finished home, that's straightforward. For new construction, that date is everything: it decides whether your build shows up complete, partially complete, or not yet on the rolls at all. Understanding the rule turns a surprise bill into a predictable one — and occasionally into an appeal.
The condition-as-of-January-1 rule
Indiana doesn't assess your home as of the day the bill is cut. It assesses the property as it stood on January 1 of the assessment year. A home substantially complete on January 1 is assessed as a complete home. A home that was a foundation and framing on January 1 is assessed at its partial state — not its eventual finished value.
This single rule explains most of the confusion around new-construction bills. Your finished, occupied house can carry an assessment that reflects a half-built condition, because the assessment is frozen to a date that may predate completion.
Percent-complete assessments
When a build is genuinely unfinished on January 1, the assessor assigns a percent-complete value — an estimate of the structure's completion as of that date applied to its projected value. A home that was roughly 40% complete on January 1 carries an assessment reflecting that partial state for that year.
| Status on January 1 | How it's assessed that year |
|---|---|
| Vacant lot, no structure | Land only |
| Foundation / framing started | Land plus percent-complete improvement |
| Substantially complete | Land plus near-full or full improvement |
| Complete and occupied | Land plus full improvement |
The next January 1, the assessor catches the structure up to its then-current (likely complete) condition — and that catch-up is where the jump comes from.
A worked example of the percent-complete jump
Picture a home where the land is assessed at approximately $60,000 and the finished improvement will be worth approximately $240,000. Watch how the assessed value tracks construction across two January 1 dates:
| Assessment year | Condition on January 1 | Land AV | Improvement AV | Total AV |
|---|---|---|---|---|
| Year one | Approximately 40% complete | $60,000 | ~$96,000 | ~$156,000 |
| Year two | Complete and occupied | $60,000 | $240,000 | $300,000 |
The land never moved. The entire jump — from approximately $156,000 to $300,000 — is the improvement value catching up to the finished home on the second January 1. The year-one bill was never your steady-state cost; it was a snapshot of a half-built house frozen to a date.
Why permits and inspections drive the timing
New construction reaches the tax roll through building permits and field inspections. The permit tells the assessor a structure is coming; a field inspection establishes its condition. Because that pipeline takes time, an assessment can lag construction by a cycle — your home may be finished and occupied while the rolls still show a partial or even land-only value, simply because the inspection that captures completion hasn't flowed through yet.
That lag feels like a gift. It isn't a discount — it's a delay. The value that didn't show up this year shows up next year, all at once.
How a new build reaches the roll, step by step
- A permit is pulled. This signals the assessor that a structure is coming, but it does not by itself establish a value.
- Construction progresses. What matters for assessment is the structure's condition on the next January 1, not the day work finishes.
- A field inspection captures condition. The inspection establishes whether the structure is partial, substantially complete, or finished as of the assessment date.
- The value posts to the roll. If the inspection has not flowed through by January 1, the roll may still show a partial or land-only value — the lag.
- A Form 11 notice issues the new value in writing. This is where the number first appears formally and where your appeal clock starts.
Because step three can lag step two, a finished and occupied home can sit on the roll at a partial value for a cycle. The catch-up arrives the following year.
The lag-then-jump
Put the rule and the pipeline together and you get the pattern that catches new owners off guard:
- Year one: January 1 finds the home partially built (or the inspection hasn't posted). You get a low, sometimes land-only or percent-complete bill.
- Year two: January 1 finds the home complete. The full improvement value lands, and your bill jumps to reflect the finished home.
The jump isn't an error and usually isn't appealable on its own — it's the assessment finally catching up to reality. The mistake is treating year one's low bill as your steady-state cost. Budget for the finished-home assessment from the start.
Warning
A low first-year bill on a new build is almost always a timing artifact, not your real tax cost. Do not anchor your budget to it. When the January 1 condition catches up to the finished home, the improvement value — and the bill — jumps to where it was always headed. Plan for the complete-home number from day one.
When the jump is worth appealing
The jump itself is usually correct. What's worth scrutinizing is the condition the assessor recorded as of January 1. Appeal angles include:
- Overstated completion. If the assessor assessed the home as substantially complete when it was genuinely partial on January 1 — say, no interior finish, no occupancy — the percent-complete figure may be too high. Photos, permit dates, certificate-of-occupancy timing, and contractor records establish the real January 1 condition.
- Wrong characteristics on the record card. A new build is a fresh data entry, and fresh entries carry errors — square footage, finish grade, feature counts. Compare the record card to as-built reality.
- Land value. New construction is a good moment to check whether the land line is supported, separate from the improvement.
These are filed on a Form 130, the same as any assessment appeal. The starting point for any new-construction owner is the Form 11 assessment notice — that's where the new value first appears in writing and where your appeal clock starts. See what to do with a 2026 Form 11 and the Marion County Form 11 specifics. The statewide new-construction timing guide covers the cycle in more depth.
The DLGF is the state authority that governs assessment standards, including the condition-as-of date. The new value is filed on a Form 130 with the Marion County Assessor's Office, and a denial can escalate to the Indiana Board of Tax Review.
Tip
Document your build's condition as you go. Date-stamped photos, permit dates, certificate-of-occupancy timing, and contractor invoices are exactly the evidence that establishes the real January 1 condition. They are far easier to gather while building than to reconstruct after a Form 11 lands with a completion percentage you want to dispute.
Mistakes to avoid
- Budgeting from the year-one bill. A low first-year bill on a new build is a timing artifact, not your real tax cost. Plan for the finished-home number.
- Appealing the jump itself. The catch-up to a complete home is usually correct and not appealable. What is appealable is an overstated January 1 condition or a miskeyed record card.
- Skipping the record card review. A new build is a fresh data entry, and fresh entries carry errors in square footage, finish grade, and feature counts. Check them against as-built reality.
- Ignoring the land line. New construction is a good moment to confirm the land value is supported, separate from the improvement.
- Missing the Form 11 window. The Form 11 is where the new value appears and where your appeal clock starts. Do not let it sit unread.
Common questions
My finished home has a low bill. Is that a permanent break? No. It almost certainly reflects a partial or land-only condition frozen to January 1, or an inspection that has not posted yet. The full value lands the following year.
Can I appeal the jump when the full value finally shows up? The jump itself is usually correct. What you can challenge is whether the assessor overstated the home's completion as of January 1, or recorded wrong characteristics on the record card.
What proves the real January 1 condition? Date-stamped photos, permit dates, certificate-of-occupancy timing, and contractor records. Together they establish what was actually standing on the assessment date.
Where does the new-construction value first appear? On the Form 11 assessment notice. That is the document to watch, and it starts your appeal clock.
Find your property
When your new build's assessment posts, check the record card against what was actually standing on January 1. Start at /indiana/marion, then /indiana/marion/residential for a home or /indiana/marion/commercial for a commercial build.
Property Lookup shows your assessed value and its year-over-year history, so the lag-then-jump is visible before it surprises you, and Tax Appeal helps you challenge an overstated completion or a miskeyed record card.