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SF598 • 2026

A bill for an act relating to the assessment of certain development property, and including effective date and retroactive applicability provisions.(Formerly SSB 1180 .)

A bill for an act relating to the assessment of certain development property, and including effective date and retroactive applicability provisions.(Formerly SSB 1180 .)

Taxes
Passed Legislature

This bill passed both chambers and reached final enrollment, even if later executive action is not shown here.

Sponsor
COMMITTEE ON LOCAL GOVERNMENT
Last action
2025-03-17
Official status
Subcommittee: Driscoll, Quirmbach, and Reichman. S.J. 552 .
Effective date
Not listed

Plain English Breakdown

Using official source text because the generated explanation was unavailable or could not be confirmed against the official bill text.

A bill for an act relating to the assessment of certain development property, and including effective date and retroactive applicability provisions.(Formerly SSB 1180 .)

A bill for an act relating to the assessment of certain development property, and including effective date and retroactive applicability provisions.(Formerly SSB 1180 .)

What This Bill Does

  • A bill for an act relating to the assessment of certain development property, and including effective date and retroactive applicability provisions.(Formerly SSB 1180 .)

Limits and Unknowns

  • This entry is temporarily using official source text because the generated explanation could not be confirmed against the official bill text during the last sync.

Bill History

  1. 2025-03-17 Iowa Legislature

    Subcommittee: Driscoll, Quirmbach, and Reichman. S.J. 552 .

  2. 2025-03-11 Iowa Legislature

    Referred to Ways and Means. S.J. 480 .

  3. 2025-03-10 Iowa Legislature

    Committee report, approving bill. S.J. 477 .

  4. 2025-03-10 Iowa Legislature

    Introduced, placed on calendar. S.J. 465 .

Official Summary Text

A bill for an act relating to the assessment of certain development property, and including effective date and retroactive applicability provisions.(Formerly SSB 1180 .)

Current Bill Text

Read the full stored bill text
Senate

File

598

-

Introduced

SENATE

FILE

598

BY

COMMITTEE

ON

LOCAL

GOVERNMENT

(SUCCESSOR

TO

SSB

1180)

A

BILL

FOR

An

Act

relating

to

the

assessment

of

certain

development

1

property,

and

including

effective

date

and

retroactive

2

applicability

provisions.

3

BE

IT

ENACTED

BY

THE

GENERAL

ASSEMBLY

OF

THE

STATE

OF

IOWA:

4

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598

Section

1.

Section

441.72,

Code

2025,

is

amended

to

read

as

1

follows:

2

441.72

Assessment

of

platted

lots

and

development

property

.

3

1.

Except

as

provided

in

subsection

2

,

when

a

subdivision

4

plat

is

recorded

pursuant

to

chapter

354

,

the

individual

lots

5

within

the

subdivision

plat

shall

continue

to

be

classified

6

and

assessed

for

taxation

in

the

manner

the

property

was

prior

7

to

the

recording

of

the

plat

and

the

individual

lots

shall

not

8

be

assessed

in

excess

of

the

total

assessment

of

the

land

as

9

acreage

or

unimproved

property

.

The

assessor

shall

not

change

10

the

classification

or

assessment

of

the

individual

lots

for

11

five

years

after

the

recording

of

the

plat

or

until

the

lot

is

12

actually

improved

with

permanent

construction,

whichever

occurs

13

first.

When

an

individual

lot

has

been

improved

with

permanent

14

construction,

the

lot

shall

be

assessed

for

taxation

purposes

15

as

provided

in

chapter

428

and

this

chapter

.

16

2.

For

subdivision

plats

recorded

pursuant

to

chapter

17

354

on

or

after

January

1,

2004,

but

before

January

1,

2011,

18

the

individual

lots

within

the

subdivision

plat

shall

not

19

be

assessed

in

excess

of

the

total

assessment

of

the

land

20

as

acreage

or

unimproved

property

for

eight

years

after

the

21

recording

of

the

plat

or

until

the

lot

is

actually

improved

22

with

permanent

construction,

whichever

occurs

first.

When

an

23

individual

lot

has

been

improved

with

permanent

construction,

24

the

lot

shall

be

assessed

for

taxation

purposes

as

provided

in

25

chapter

428

and

this

chapter

.

26

a.

Unless

the

owner

elects

to

withdraw

the

property

from

the

27

classification

and

assessment

provisions

of

this

subsection,

28

property

acquired

for

development

on

or

after

January

1,

2020,

29

or

property

owned

for

development

upon

which

development

30

activities

occur

on

or

after

January

1,

2020,

shall

continue

31

to

be

classified

and

assessed

for

taxation

in

the

manner

the

32

property

was

prior

to

the

acquisition

or

commencement

of

33

development

activities.

The

assessor

shall

not

change

the

34

classification

or

assessment

of

the

property

or

a

lot

on

the

35

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598

property

while

development

is

occurring

until

the

property

or

1

lot

is

improved

with

a

new

permanent

structure

or

is

sold.

2

Upon

the

occurrence

of

one

or

more

such

events,

the

property

3

or

lot

shall

be

assessed

for

taxation

purposes

as

provided

in

4

chapter

428

and

this

chapter.

5

b.

If

the

owner

of

property

described

in

paragraph

“a”

6

elects

to

withdraw

the

property

from

the

provisions

of

7

paragraph

“a”

,

the

owner

shall

notify

the

assessor.

The

8

notification

must

be

provided

to

the

assessor

no

later

than

9

March

1

of

the

assessment

year

for

which

the

owner

elects

to

10

withdraw

the

property.

The

property

or

lot

that

has

been

11

withdrawn

shall

be

subject

to

subsection

1,

if

applicable.

12

c.

As

used

in

this

subsection,

“development”

means

any

of

13

the

following:

14

(1)

A

reconstruction

or

alteration

of

the

size

or

material

15

change

in

the

external

appearance

of

an

existing

structure

on

16

a

lot.

17

(2)

A

change

in

the

intensity

of

the

use

of

lots

or

a

change

18

in

zoning,

including

an

increase

in

the

number

of

dwelling

19

units

in

an

existing

structure,

or

further

subdividing

the

20

lots

to

increase

the

number

of

dwelling

units,

commercial

21

structures,

manufacturing

establishments,

or

offices.

22

(3)

Clearing

the

lots

in

anticipation

of

construction.

23

(4)

Depositing

fill

dirt

on

the

lots

in

anticipation

of

24

construction.

25

(5)

Installing

streets

and

public

utilities

on

the

lots.

26

3.

This

section

does

not

apply

to

special

assessment

levies.

27

Sec.

2.

REPEAL.

Section

405.1,

Code

2025,

is

repealed.

28

Sec.

3.

IMPLEMENTATION.

Nothing

in

this

Act

shall

be

29

construed

to

require

the

refund

or

modification

of

property

30

taxes

that

are

attributable

to

assessment

years

beginning

31

before

January

1,

2025,

or

the

adjustment

of

property

32

assessments

for

assessment

years

beginning

before

January

1,

33

2025.

34

Sec.

4.

EFFECTIVE

DATE.

This

Act,

being

deemed

of

immediate

35

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598

importance,

takes

effect

upon

enactment.

1

Sec.

5.

RETROACTIVE

APPLICABILITY.

This

Act

applies

2

retroactively

to

assessment

years

beginning

on

or

after

January

3

1,

2025.

4

EXPLANATION

5

The

inclusion

of

this

explanation

does

not

constitute

agreement

with

6

the

explanation’s

substance

by

the

members

of

the

general

assembly.

7

This

bill

repeals

Code

section

405.1,

which

authorizes

a

8

county

board

of

supervisors

to

adopt

an

ordinance

providing

9

that

property

acquired

and

subdivided

for

development

of

10

housing

shall

continue

to

be

assessed

for

taxation

in

the

11

manner

that

it

was

prior

to

the

acquisition

for

housing

until

12

the

lot

is

sold

for

construction

or

occupancy

of

housing

or

13

five

years

from

the

date

of

subdivision,

whichever

is

shorter.

14

Code

section

405.1

also

authorizes

time

extensions

of

certain

15

ordinances

that

affect

the

assessment

of

property

subdivided

16

for

development

of

housing

and

authorizes

the

time

extensions

17

of

certain

ordinances

by

counties

and

by

cities

in

the

portion

18

of

the

applicable

area

located

in

the

incorporated

area

of

19

the

city.

Additionally,

the

Code

section

authorizes

cities

20

and

counties

to

adopt,

amend,

or

extend

such

ordinances

and

21

provides

that

property

acquired

and

subdivided

for

development

22

of

housing

shall

continue

to

be

assessed

for

taxation

and

taxed

23

in

the

manner

it

was

prior

to

its

acquisition

for

housing

until

24

the

lot

is

sold

for

construction

or

occupancy

of

housing.

25

Code

section

441.72

provides

that

a

platted

lot

for

which

26

a

subdivision

plat

was

recorded

is

assessed

for

property

tax

27

purposes

as

acreage

or

unimproved

property

for

five

years

or

28

until

the

lot

is

actually

improved

with

permanent

construction,

29

whichever

occurs

first.

However,

for

subdivision

plats

30

recorded

on

or

after

January

1,

2004,

but

before

January

1,

31

2011,

the

time

limit

is

eight

years.

32

The

bill

modifies

Code

section

441.72(1)

relating

to

the

33

five-year

limitation

by

specifying

when

a

subdivision

plat

34

is

recorded,

the

individual

lots

within

the

subdivision

plat

35

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598

shall

continue

to

be

classified

and

assessed

for

taxation

in

1

the

manner

the

property

was

prior

to

the

recording

of

the

2

plat

for

five

years

or

until

the

lot

is

actually

improved

3

with

permanent

construction,

whichever

occurs

first.

The

4

bill

strikes

portions

of

Code

section

441.72(2)

relating

to

5

the

eight-year

limitation.

The

bill

provides

that,

unless

6

the

owner

elects

to

withdraw

the

property

from

the

provisions

7

established

in

the

bill,

for

property

acquired

for

development

8

on

or

after

January

1,

2020,

or

property

owned

for

development

9

upon

which

development

activities

occur

on

or

after

January

10

1,

2020,

such

property

shall

continue

to

be

classified

and

11

assessed

for

taxation

in

the

same

manner

as

the

property

12

was

prior

to

the

acquisition

or

commencement

of

development

13

activities,

the

assessor

shall

not

change

the

classification

14

and

assessment

of

the

property

or

a

lot

on

the

property

while

15

development

is

occurring

until

the

property

or

lot

is

improved

16

with

a

new

permanent

structure

or

is

sold.

The

bill

allows

17

owners

of

such

property

to

withdraw

the

property

from

this

18

new

provision.

If

such

an

election

is

made,

the

property

is

19

subject

to

the

assessment

and

classification

provisions

in

Code

20

section

441.71(1),

as

amended

in

the

bill.

21

The

bill

defines

“development”

to

include

reconstruction,

22

zoning

changes,

clearing

lots,

depositing

fill

dirt,

and

23

installing

streets

and

public

utilities

on

the

lots.

24

The

bill

specifies

nothing

shall

be

construed

to

require

the

25

refund

or

modification

of

property

taxes

that

are

attributable

26

to

assessment

years

beginning

before

January

1,

2025,

or

27

the

adjustment

of

property

assessments

for

assessment

years

28

beginning

before

January

1,

2025.

29

The

bill

takes

effect

upon

enactment

and

applies

30

retroactively

to

assessment

years

beginning

on

or

after

January

31

1,

2025.

32

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