Here's 9731 Decatur Drive in Indianapolis, IN 46256, listed at $1,550,000.

1 photo from the listing — tap any to expand.

Photo of 9731 Decatur Drive, Indianapolis, IN

For Sale — 9731 Decatur Drive, Indianapolis, IN 462561 / 1

Quick read on the numbers:

$1,550,000

For Sale1 days on market

Beds

Baths

Sq ft

6,121

Built

1994

Acres

0.6

Here's what I think this home is worth:

Key things to know

2 fireplaces
Finished basement (2,008 sqft)
3-car garage
Masthead subdivision

From the listing

Welcome home to this RARE opportunity on Geist Reservoir. Tucked away on a private cul-de-sac in the prestigious Masthead community, this extraordinary 4-bedroom, 5-bathroom lakefront home offers over 6,190 square feet of luxury living paired with one of the rarest amenities on Geist Reservoir, "a grandfathered-in" boat garage. No longer permitted to be built on the lake, this coveted feature makes this property truly irreplaceable. Designed to maximize breathtaking water views, the home welcomes you with soaring ceilings and dramatic floor-to-ceiling windows that frame the waters of Geist from nearly every angle. Whether you're enjoying your morning coffee in the sunroom, hosting friends in the expansive all-seasons room complete with a built-in indoor gas grill, or unwinding beside the fireplace, every space is designed to bring the outdoors in. The main level offers elegant living spaces, a luxurious primary suite, and seamless flow for both everyday living and entertaining. Upstairs, enjoy your own private movie theater, while the walkout lower level provides additional living and recreation space with direct access to the backyard oasis. Step outside and discover what truly se…

A few highlights from the feature list:

Interior

Attic AccessBuilt-in FeaturesWalk-In Closet(s)Hardwood FloorsWet BarBreakfast BarPaddle FanEat-in KitchenEntrance FoyerHi-Speed Internet AvailblKitchen IslandPantry

Exterior

Sprinkler SystemGas Grill

Upcoming open houses:

Saturday, Jun 20 · 2–4PM
Sunday, Jun 21 · 11AM–1PM

I'll break the details down — open any section that matters.

TAX ASSESSMENT

County assessed values for current year

Total Assessed Value

$1,303,700

Land Value

$194,300

Land$194,300

15% of total

Improvement Value

$1,109,400

Improvements$1,109,400

85% of total

Annual tax · 2025: $17,132
Exemption: Homestead

Rough monthly:

Monthly payment

Estimate · $1,550,000

$9,721/mo

≈ $8,250 principal & interest · $1,428 tax · $44 HOA

Down payment (%)Interest rate (%)Term (yrs)

Estimate only. Actual payment depends on lender, taxes, insurance, and HOA. Down payment $310,000 on a loan of $1,240,000.

Price history

Listedat $1,550,000
Jun 19, 2026

Masthead · activity

past 6 months

Sold: 6
Median price: $850,000
Median DOM: 125 days

A few similar homes that recently sold nearby:

Recent comparable sales

Same zip · similar size

Comparative value

5 comps in this range

This home is 94% above median for similar nearby sales.

$560K$1.3MMedian $801K

$1.6M

A few places to dig deeper:

Masthead Hamilton Southeastern Schools

MLS# 22109056