3531 RM-3347 - Lot 16

Round Mountain, TX 78663

$5,783,600

5 beds
6 baths
6,088 sq ft
12.45 acres
Built 2026

Listed by Compass RE Texas, LLC · MLS #ACT9136700

3531 RM-3347 - Lot 16, Round Mountain, TX 78663 — photo 1

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A FEW THINGS TO NOTICE

What stands out.

Year built

Built in 2026.

Garage parking

3 garage spaces listed.

Property size

12.45 acres listed.

Highlights from the listing description and property details. Confirm features with the listing agent.

THE PROPERTY

Get to know the property.

On top of the ridge at RanchesAt Big Mountain, Lot 16 is an under-construction Hill Country showcase estate positioned on 12.45 private acres with rare 360-degree views stretching toward Packsaddle Mountain, Lake LBJ, Marble Falls, and the surrounding Hill Country.
Carefully positioned and designed to take full advantage of its ridge-top setting, the 6,088-square-foot residence is being built by Keith Wing for luxury ranch living and large-scale entertaining. The home features 5 bedrooms, 5 full baths, 1 half bath, expansive indoor-outdoor living, a resort-style pool, screened outdoor living area, game room, study, and loft.
The homesite offers privacy, native landscape, and long-distance views from one of the community’s premier ridge-top settings. RanchesAt Big Mountain is a private gated luxury acreage community spanning approximately 401 acres with only 27 homesites, offering the space and privacy of ranch ownership with the ease of gated access, private roads, underground utilities, and a cohesive community setting.
Wildlife is present throughout the ranch, including blackbuck, Arabian oryx, fallow deer, and native whitetail. Lot 16 is part of the RanchesAt Reserve Collection, a limited offering of available showcase homes selected for their visibility, setting, and role in shaping the community’s architectural tone.

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THE NEIGHBORHOOD

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3531 RM-3347 - Lot 16, Round Mountain, TX 78663

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THE DETAILS

The details, all in one place.

Property type: Residential
Category: Residential
Year built: 2026
Full baths: 5
Half baths: 1
Garage spaces: 3
Cooling: Ceiling Fan(s), Central Air, Electric
Heating: Central, Fireplace(s), Propane
Appliances: Bar Fridge, Built-In Freezer, Built-In Gas Oven, Built-In Gas Range, Built-In Range, Built-In Refrigerator, Dishwasher, Disposal, Dryer, Exhaust Fan, Gas Range, Microwave, Refrigerator, Stainless Steel Appliance(s), Washer/Dryer, Tankless Water Heater
Flooring: See Remarks
Fencing: Partial
Accessibility: See Remarks
Pool features: Heated, In Ground, Infinity, Outdoor Pool, Pool/Spa Combo
Subdivision: RanchesAt Big Mountain
Parcel: Lot 16
HOA: RanchesAt Big Mountain HOA
HOA amenities: Common Area Maintenance
HOA fee frequency: Annually
Elementary school: Lyndon B Johnson
Middle school: Lyndon B Johnson
High school: Lyndon B Johnson (Johnson City ISD)
HOA fee: $1,800.00

Features and school information are supplied by the listing source. Confirm measurements, school assignments, HOA terms and rental restrictions before making a decision.

OWNERSHIP, WITH A PLAN

Investor outlook.

Explore this property’s rental potential with an all-cash purchase. Monthly rent starts at 5% of the purchase price per year, divided by 12. Adjust it and the other assumptions to explore your scenario.

These are planning assumptions, not a rental appraisal or a loan quote. The starting rent is a price-based estimate; a local leasing professional can help confirm market rent.

Investor outlook assumes an all-cash purchase. No mortgage payment is deducted.

Estimated monthly cash flow · cash purchase—

Estimated monthly rent$24,098.33

Cap rate—

Annual operating income: —

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Purchase price

Rental income & operating costs

Estimated monthly rent

Purchase price × 5% ÷ 12. Updates with purchase price until you enter a custom rent.

Vacancy allowance (%) Management fee (%) Maintenance reserve (%) Capital reserve (%)

Annual property tax

Annual insurance

Annual insurance starts at purchase price × 0.25%, rounded to the nearest available amount. Updates with purchase price until you choose another amount.A planning estimate, not an insurance quote. Adjust it for your property and coverage.

Monthly HOA

Other monthly costs

Percentages are editable examples, not ERA fee quotes. Management is applied to rent after vacancy; maintenance and capital reserves use scheduled rent. Add owner-paid utilities, mortgage insurance and other recurring expenses under other costs.

How this scenario is calculated

Annual operating income is rent after vacancy, management, maintenance, taxes, insurance, HOA and other operating costs, before financing and capital reserves. Cap rate divides annual operating income by purchase price. Estimated monthly cash flow assumes an all-cash purchase: rent after vacancy, management, maintenance, taxes, insurance, HOA, other operating costs and capital reserves. No mortgage payment is deducted. The mortgage calculator is separate; loan payments would reduce cash flow for a financed purchase. One-time acquisition costs, renovations, income taxes, depreciation and appreciation are excluded.

Mortgage payment calculator

Explore financing separately. These loan settings do not change the all-cash investor outlook.

Mortgage assumptions

Down payment (%) Interest rate (%) Loan term

20% down and 7% interest are illustrative starting values.

Estimated monthly principal & interest—Loan payment only. Excludes property taxes, homeowners/flood insurance, mortgage insurance and HOA dues.

About this payment estimate

Based on a fixed-rate, fully amortizing loan with monthly payments and the price, down payment, interest rate and term you select. The interest rate is an example, not a current rate offer or APR; APR includes certain loan costs. This is an illustration, not a Loan Estimate, approval, offer of credit or commitment to lend.

Your actual payment, rate and eligibility depend on your lender, credit, loan program and property. Closing costs, points, prepaid expenses and lender fees are not included. Taxes and insurance may change, and mortgage insurance may be required, particularly with a down payment below 20%. Ask your lender for a Loan Estimate and a complete monthly payment including applicable taxes, insurance and fees.

Dollar results are rounded to the nearest cent; calculations retain precision until display. A cash purchase has no loan payment but still has ownership costs. Understand your total home payment (CFPB).

ERA PROPERTY MANAGEMENT

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3531 RM-3347 - Lot 16, Round Mountain, TX 78663 · MLS #ACT9136700

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Listing information

MLS #ACT9136700 · Austin Board of Realtors

Listing brokerage: Compass RE Texas, LLC
Listing agent: Liam McArdle McArdle

Listing status: Active. Record updated May 28, 2026. Confirm current availability and price with the listing agent.