Active under contract

$799,000

3900 Topaz Ct, Helena, MT 59602

5beds

4,324sqft

$5,313/mo

Get pre-qualified

Single Family Residence

Built in 2004

2.31 Acres Lot

$779,100 Zestimate^®

$185/sqft

$-- HOA

What's special

Walkout lower levelSecond kitchenSpacious family room

Need more space inside AND out? This Helena, MT home delivers 4,648 sq ft of living space on 2.31 acres with a 36x32 detached shop, RV/boat parking and views of Lake Helena and the surrounding mountains. With 5 bedrooms and 3 bathrooms, there’s room to spread out, work from home, entertain or accommodate extended family. The walkout lower level features a second kitchen, spacious family room, bedrooms and bath, offering excellent potential for multigenerational living, a mother-in-law suite or private guest space. The main level offers a large kitchen with generous island, open living and dining areas, office and laundry. HAM radio enthusiasts will appreciate existing HAM radio wiring and the location’s excellent reception. A whole-house generator adds peace of mind. Minutes from Fox Ridge Golf Course, Lake Helena, Hauser Lake and Canyon Ferry Lake for boating, fishing, golfing and year-round Montana recreation.

33 days
1,103
85

Facts & features

Interior

Bedrooms & bathrooms

Bedrooms: 5
Bathrooms: 3
Full bathrooms: 3

Heating

Forced Air, Gas

Cooling

Central Air

Appliances

Included: Dishwasher, Microwave, Range, Refrigerator, Water Softener

Features

Main Level Primary, Walk-In Closet(s)
Basement: Walk-Out Access
Has fireplace: No

Interior area

Total structure area: 4,648
Total interior livable area: 4,324 sqft
Finished area below ground: 2,324

Property

Parking

Total spaces: 5
Parking features: Circular Driveway
Attached garage spaces: 5

Features

Patio & porch: Deck, Patio
Has view: Yes

Lot

Size: 2.31 Acres
Features: Garden, Gentle Sloping, Sprinklers In Ground, Views
Topography: Varied

Details

Additional structures: Shed(s), Workshop
Parcel number: 05199632301280000
Special conditions: Standard
Other equipment: Generator

Construction

Type & style

Home type: SingleFamily
Architectural style: Other
Property subtype: Single Family Residence

Materials

Foundation: Poured

Condition

New construction: No
Year built: 2004

Utilities & green energy

Sewer: Private Sewer, Septic Tank
Water: Cistern, Well
Utilities for property: Natural Gas Connected, High Speed Internet Available

Community & HOA

HOA

Has HOA: No

Location

Region: Helena

Financial & listing details

Price per square foot: $185/sqft
Tax assessed value: $976,357
Annual tax amount: $5,181
Date on market: 9/23/2026
Listing agreement: Exclusive Right To Sell
Listing terms: Cash,Conventional,FHA,VA Loan

Estimated market value

$779,100

$740,000 - $818,000

$3,587/mo

Price history

Date	Event	Price
8/24/2026	Listed for sale	$799,000-6%$185/sqft
Source: MRMLS #30061935 Report a problem
12/9/2025	Listed for sale	$849,900$197/sqft
Source: MRMLS #30061935 Report a problem

Public tax history

Year	Property taxes	Tax assessment
2025	$4,571 -13%	$775,400 +14.2%
2024	$5,253 +0.2%	$678,800
2023	$5,243 +29.6%	$678,800 +51.9%
2022	$4,044 -2.6%	$447,000 -0.5%
2021	$4,153 +3.6%	$449,200 +3.6%
2020	$4,011 -1.4%	$433,800
2019	$4,069 -6.1%	$433,800 +13.1%
2018	$4,333 +5.9%	$383,500
2017	$4,092 +31.3%	$383,500 +0.4%
2016	$3,117 -3.2%	$381,900
2015	$3,221 +26.2%	$381,900 +130.6%
2014	$2,551 -0.9%	$165,625 -1.2%
2013	$2,575 -5.7%	$167,710 -1.1%
2012	$2,729	$169,657
2011	--	--
2010	--	--
2009	--	--
2008	--	$283,900
2007	--	$283,900
2006	--	$283,900 +51%
2005	--	$188,018