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15620 Grumbles LN
Austin, TX, 78738
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Welcome to Signal Hill Estates, an exclusive gated community comprising 61 estate homes, each sitting on an acre lot. One of the final three luxury homes from Ames Design Build in Signal Hill Estates, this home is a 5 bedroom 5.5 bath with a media room that opens to the back patio. Arguably the best view in Signal Hill Estates, this floor plan was designed with entertaining in mind. Both front porch and back patio offer spacious seating areas to take in the view and enjoy alfresco dining. You will be welcomed by a vaulted entry with an open foyer leading into the dining, kitchen, and living areas. Opening up to the back patio, your flex space awaits for you to choose it as a media room, game room, or wellness space. Take that cooking class you have been considering, because you will enjoy amenities such as a chef-caliber kitchen complete with stainless steel appliances by Wolf and Sub Zero, including a double oven, large 60 inch panel ready fridge/freezer, a 48-inch range with 6 burners, and a drawer microwave oven. The custom cabinetry boasts soft-close, frameless construction dovetail drawers. Ames Design Build has given great attention to every detail, with all closets including custom cabinetry, and all interior doors and trim are solid wood. Custom hardwood, tile, and tile accents add to the charm of 15620 Grumbles Lane. Four of the bedrooms have their own private bathroom, and there is an additional dedicated office or 5th bedroom. Signal Hill Estates, a paradise in Hill Country, is minutes from shopping and dining at the Hill Country Galleria. Its unbeatable location offers easy access to hiking, golfing, and lake life, as well as a connection to downtown Austin in less than 30 minutes. Signal Hill is in the exemplary Lake Travis ISD. Welcome to your new neighborhood, and welcome to your new masterpiece of a home.
Property Type
Residential
Year Built
2021
Lot Size
1.00 acres
$/Sq Ft
$554
HOA
$155/mo
Garage
8 spaces
Listed by Kuper Sotheby's Itl Rlty
Verified property facts
15620 Grumbles LN is listed at $2,500,000 with 5 bedrooms, 5 full, 1 half bathrooms, 4,510 square feet, 1.00-acre lot. This places it above the 78738 median of $855,000.
15620 Grumbles LN is zoned for Lake Travis ISD with assigned schools: Lake Travis (8/10) (elementary), Lake Travis (8/10) (middle), Lake Travis (8/10) (high). School assignments should be verified directly with the district.
15620 Grumbles LN is in Signal Hill, Austin, Texas. See the full [Signal Hill neighborhood guide](/neighborhoods/signal-hill-austin) for market data, schools, and lifestyle details.
15620 Grumbles LN is a Residential built in 2021 featuring 5 bedrooms, 5 full, 1 half bathrooms, 4,510 square feet, 1.00-acre lot.
15620 Grumbles LN is presented by the Keenan Group at Compass Real Estate, the #1 Austin Board of Realtors Team (2024) with 1,000+ career transactions and $1B+ in career volume across Austin's luxury market.
#1 Austin Board of Realtors Team. Over 1,000 successful transactions with high-end expertise.
25+ years advising buyers and sellers in this community
Property Details
Features
Appliances
Flooring
Features
Construction
Lot Features
Fencing
Foundation
Patio / Porch
Parking
Waterfront
Listing timeline with current price, original ask, and market time.
Public record data from county appraisal records. Market value can differ from assessed value.
| Year | Taxes | Total Assessment | Land | Additions |
|---|---|---|---|---|
2025+4.9% | — | $2,491,193 | — | — |
2024+302.6% | — | $2,375,000 | $524,618 | $1,727,029 |
2023+676.1% | — | $589,862 | $649,935 | $1,725,065 |
2021 | — | $76,000 | $95,990 | — |
Zoned assignments come from the property school fields available to us. District context schools are shown only when an assigned tier is missing. Contact the school district directly to verify current boundaries and enrollment eligibility. Ratings from GreatSchools.org.
20% ($500K)
$2,500,000
Luxury property intelligence
A sourced read on Signal Hill pricing, timing, and property scale. No automated valuation claim.
List price
$2,500,000
Price per sqft
$554/sqft
Vs. Signal Hill median
+488.2%
$425K median
Days on market
1,334 days
Original to current
No verified reduction
$2.5M original
Active inventory context
Ask for current inventory
Price Position in Signal Hill
Listed 488% above the Signal Hill median
Source: MLS Grid / Unlock MLS and Keenan Group review as of Jun 4, 2026.
Request Private Market AnalysisLifestyle, schools, market context, and homes in Signal Hill
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#1 ABOR Team 2024 with $1B+ career sales volume
15620 Grumbles LN is priced at $554 per square foot across 4,510 sqft. The Signal Hill median list price is $425,000.
The most recent annual property tax for 15620 Grumbles LN is $10,731. Texas has no state income tax, so property taxes are a primary revenue source. Rates vary by jurisdiction and exemptions. Verify current amounts with the county appraisal district.
With 20% down ($500,000) on a 30-year fixed mortgage at approximately 6.75%, the estimated monthly payment for 15620 Grumbles LN is around $13,866 including principal, interest, and estimated taxes. Actual payment varies by rate, down payment, insurance, and HOA fees.
At $2,500,000, 15620 Grumbles LN is in the Signal Hill market where there are currently 239 active listings in 78738. The Keenan Group has completed 19 transactions in 78738 as part of 1,000+ career sales totaling $1B+ across Austin. For a detailed market analysis, see our [Signal Hill guide](/neighborhoods/signal-hill-austin).
15620 Grumbles LN was built in 2021, making it 5 years old with relatively recent construction.
15620 Grumbles LN includes verified waterfront access: None. Buyers should confirm shoreline, dock rights, and floodplain status during due diligence.
15620 Grumbles LN sits on a 1.00-acre lot, providing substantial outdoor living space. Properties of this scale in Austin's luxury market typically feature pool areas, outdoor kitchens, and mature landscaping. Confirm specific amenities with the listing agent.
15620 Grumbles LN is part of a managed community with HOA dues of $155 monthly. HOA-managed communities in Austin's luxury market typically provide amenities such as common areas, security, and exterior maintenance. Verify current dues and rules with the HOA directly.
Answers use visible listing facts, school context, and neighborhood data available on this page. Verify time-sensitive details before making decisions.
Signal Hill is one of Austin's established neighborhoods, zoned for Lake Travis ISD in the 78738 area. The Keenan Group has specialized in Signal Hill real estate for 25+ years with 1,000+ career transactions. Contact (512) 415-7653 for current market conditions and available homes.
Source: Keenan Group at Compass Real Estate, #1 Austin Board of Realtors Team (2024)
Car-Dependent
N/A
Somewhat Bikeable
Walk Score measures walkability based on distance to amenities. Transit Score measures public transportation access. Bike Score measures bikeability based on bike infrastructure and terrain.
7 events on record
Current Price
$2,500,000
Timeline data compiled from MLS records and public records. Information deemed reliable but not guaranteed.
| Year | Taxes | Total Assessment | Land | Additions |
|---|---|---|---|---|
2025+4.9% | — | $2,491,193 | — | — |
2024+302.6% | — | $2,375,000 | $524,618 | $1,727,029 |
2023+676.1% | — | $589,862 | $649,935 | $1,725,065 |
2021 | — | $76,000 | $95,990 | — |
Timeline merges MLS activity (when permitted) with public records. Some details may be restricted to registered VOW clients.
Best Match
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Neighborhood guide and local insights
Signal Hill is one of the smaller, quieter neighborhoods in southwest Austin's 78748 zip code, the kind of place where neighbors actually wave from their driveways and most homes have been owned by the same families for years. Built primarily across two phases in the 1990s and early 2000s, Signal Hill sits at a price point that has become rare in Austin - a median around $425,000 puts it well below most of the city's established neighborhoods, which makes it one of the more accessible entry points into Austin ISD school zones. Signal Hill sits in southwest Austin near the intersection of Slaughter Lane and Manchaca Road, with quick access to MoPac and I-35 for downtown commutes that run about 20 minutes outside of rush hour. South Austin's commercial corridor along Slaughter Lane handles weekly errands - H-E-B, restaurants, and shopping all within five minutes. The neighborhood backs up to wooded land that gives it a more rural feel than its proximity to major roadways would suggest. The housing stock is straightforward Texas suburban - traditional and ranch-style homes built mostly between 1995 and 2005, with brick and stone facades, two- and three-car garages, and the kind of practical layouts that hold their value because they work for families. Lots range from 0.15 acres in the older sections to about 0.5 acres in the larger phase, with most homes between 1,800 and 3,200 square feet. Pricing typically falls between $375,000 and $525,000, with some larger lots and updated homes pushing higher. Signal Hill is served by Austin ISD. Baranoff Elementary handles the elementary years and has a steady reputation for solid academics and engaged parent involvement. Bailey Middle School serves the middle school years, and most students continue to Akins High School. The schools are close enough that walking and biking are realistic options for elementary kids, which adds to the neighborhood character. The lifestyle here is straightforward suburban with strong access to outdoor space. The Slaughter Creek Trail runs nearby for runners and cyclists. South Austin's restaurant scene along Slaughter and Manchaca handles casual dining and date nights. Onion Creek Metropolitan Park is a short drive south for hiking and disc golf. And the proximity to MoPac means Lady Bird Lake, Zilker, and downtown are all within reach for weekend plans. Signal Hill works for families and first-time buyers who want Austin ISD schools without paying central Austin prices. It is more affordable than Circle C Ranch to the west and has more established trees and lot sizes than the newer Hays CISD developments further south. The tradeoff is that Signal Hill is small - inventory turns over slowly because owners tend to stay - so when something does come on the market, it usually moves fast. For buyers who can be patient and act decisively, this is one of the better-value pockets in southwest Austin.
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