For sale

Price cut: $6.1K (8/19)

$578,875

21 Big Buck Trl, Roundup, MT 59072

4beds

2,428sqft

$3,488/mo

Get pre-qualified

Manufactured Home, Single Family Residence

Built in 2008

20 Acres Lot

$549,500 Zestimate^®

$238/sqft

$-- HOA

What's special

Front deckingCentral airGarden-ready spaceNew roofing

Country living meets modern convenience on 20 acres about 20 minutes from town! This spacious 4 bed, office, and 3 bath home offers 2,428 sq ft on a permanent foundation, currently-VA financed. Enjoy new roofing (2026), flooring(2025), siding (2026), front decking(2026), central air, and back patio, perfect for relaxing. The 35’x45’ heated/cooled shop features cement floors and is framed for insulation and sheetrock-ideal for projects or storage. Upgraded from 500 gal to 1,000 gal propane tank last year for strategic bulk pricing. Productive 20 gpm well serves the property. Garden-ready space, home has Starlink Pole and 100’ cable to home. Tucked on a semi-private road, property offers privacy, space, and comfort with room to grow.

85 days

659

34

Facts & features

Interior

Bedrooms & bathrooms

Bedrooms: 4
Bathrooms: 3
Full bathrooms: 3
Main level bathrooms: 3
Main level bedrooms: 4

Primary bedroom

Description: Bath,Walk-In,Flooring: Carpet
Features: Ceiling Fan(s), Closet
Level: Main

Office

Description: Flooring: Plank,Simulated Wood
Features: Ceiling Fan(s)
Level: Main

Heating

Forced Air, Gas, Propane

Cooling

Central Air

Appliances

Included: Dryer, Dishwasher, Electric Range, Free-Standing Range, Microwave, Oven, Range, Refrigerator, Washer
Laundry: Washer Hookup, Dryer Hookup, Laundry Room

Features

Ceiling Fan(s)
Basement: Crawl Space,None

Interior area

Total interior livable area: 2,428 sqft
Finished area above ground: 2,428

Video & virtual tour

View virtual tour

Property

Parking

Total spaces: 6
Parking features: Detached, Oversized, Workshop in Garage
Garage spaces: 6

Features

Levels: One
Stories: 1
Patio & porch: Deck, Patio
Exterior features: Deck, Patio
Fencing: None
Has view: Yes

Lot

Size: 20 Acres
Features: Landscaped, Rolling Slope, Secluded, Trees, Views
Topography: Hill

Details

Additional structures: Workshop
Parcel number: 1528200000
Zoning description: Other

Construction

Type & style

Home type: SingleFamily
Architectural style: Manufactured Home
Property subtype: Manufactured Home, Single Family Residence

Materials

Masonite
Roof: Asphalt,Shingle

Condition

Updated/Remodeled
Year built: 2008

Utilities & green energy

Sewer: Septic Tank
Water: Well

Community & HOA

Community

Subdivision: TRACT 32 of COS# 1974-5

HOA

Services included: None

Location

Region: Roundup

Financial & listing details

Price per square foot: $238/sqft
Tax assessed value: $176,578
Annual tax amount: $954
Date on market: 6/4/2026
Listing terms: Cash,Conventional,New Loan,VA Loan

Estimated market value

$549,500

$522,000 - $577,000

$2,660/mo

Price history

Date	Event	Price
8/19/2026	Price change	$578,875-1%$238/sqft
Source: BMTMLS #359797 Report a problem
6/4/2026	Price change	$585,000+3.5%$241/sqft
Source: BMTMLS #359797 Report a problem
6/21/2025	Listed for sale	$565,000+17.7%$233/sqft
Source: BMTMLS #353712 Report a problem
7/21/2023	Sold	--
Source: Agent Provided Report a problem
6/12/2023	Contingent	$480,000$198/sqft
Source: BMTMLS #340064 Report a problem
6/5/2023	Listed for sale	$480,000+152.8%$198/sqft
Source: BMTMLS #340064 Report a problem
8/31/2014	Listing removed	$189,900$78/sqft
Source: Landmark of Billings, Inc. #241652 Report a problem
7/31/2014	Pending sale	$189,900$78/sqft
Source: Landmark of Billings, Inc. #241652 Report a problem
4/20/2014	Listed for sale	$189,900-5%$78/sqft
Source: Landmark of Billings, Inc. #241652 Report a problem
1/2/2014	Listing removed	$199,900$82/sqft
Source: Landmark of Billings, Inc. #233344 Report a problem
7/22/2013	Listed for sale	$199,900$82/sqft
Source: Landmark of Billings, Inc. #233344 Report a problem

Public tax history

Year	Property taxes	Tax assessment
2025	$640 -26.8%	$176,578 +17.8%
2024	$875 +16.4%	$149,928 +5.6%
2023	$752 -35.1%	$141,918 -6.5%
2022	$1,158 +3.5%	$151,727
2021	$1,119 -17%	$151,727 +5.4%
2020	$1,348 +16.1%	$143,939
2019	$1,161 -10.1%	$143,939 +2.7%
2018	$1,291 +5.9%	$140,184
2017	$1,220 -1.6%	$140,184 -7.3%
2016	$1,240 +1.5%	$151,188 -0.9%
2015	$1,222 +24.9%	$152,568 +133%
2014	$978 +24.9%	$65,479 +14.2%
2013	$783 +9.3%	$57,340 +17.8%
2012	$717	$48,680
2011	--	--
2010	--	--
2009	--	--
2008	--	$10,365
2007	--	$10,365
2006	--	$10,365