Homes for Sale/Harris County/Tomball/Alexander Estates
Active MLS #34364441 · 62 days on market

21403 Hartwig Court

Tomball, TX 77375
Subdivision  ·  Alexander Estates
List Price
$419,900
$137/SF
Beds
4
Baths
3
Sq Ft
3,068
Built
2021
Lot
9,567 sf
Garage
2-car
County
Harris
Tax Rate
2.21%

Schools

§ 03
District
Elementary BERNSHAUSEN EL A
Middle HOFIUS INT B
High KLEIN CAIN H S CCMR 89% · Grad 95% B
TEA accountability ratings reflect 2024–25 where available. School attendance zones are subject to district redistricting — confirm directly with the district before making a school-based decision.

Overview

§ 01

Welcome to this spacious 4-bedroom, 2.5-bath Meritage home situated on an oversized corner lot in Alexander Estates. The open-concept floor plan offers generous living and entertaining spaces, including a private home office with French doors, formal dining area, game room, and media room. The kitchen features granite countertops, stainless steel appliances, a walk-in pantry, decorative glass cabinetry, under-cabinet lighting, and an oversized island overlooking the family room with fireplace. The first-floor primary suite offers a bay window, crown molding, walk-in closet, dual vanities, separate tub, and shower. Upstairs, enjoy spacious secondary bedrooms along with dedicated game and media rooms. Outside, the extended covered patio and large backyard provide plenty of room for entertaining and outdoor enjoyment. Conveniently located near Grand Parkway and SH-249 with access to shopping, dining, and Klein ISD schools.

Features

§ 02

Interior

  • Double Vanity
  • Granite Counters
  • Kitchen Family Room Combo
  • Main Level Primary
  • Pantry
  • Separate Shower
  • Walk In Pantry
  • Walk In Closets
  • Ceiling Fans
  • Programmable Thermostat
  • Convection Oven
  • Dishwasher
  • Gas Cooktop
  • Gas Oven
  • Microwave
  • Oven
  • Energy Star Qualified Appliances
  • Tankless Water Heater

Exterior & lot

  • Corner Lot
  • Roof: Composition
  • Foundation: Slab
  • Attached
  • Garage

Community

  • Style: Traditional

Property Details

§ 03 · Full MLS record

Property

Property Type Residential
Property Sub Type Detached
Architectural Style Traditional
Year Built 2021
Year Built Source PublicRecords
New Construction No
Builder Name Meritage

Building

Stories 2
Levels Two
Living Area 3,068 sq ft
Living Area Source Appraiser
Building Area Total 3,068 sq ft
Foundation Slab
Construction Cement Siding
Roof Composition

Rooms & Baths

Bedrooms 4
Bathrooms (total) 3
Bathrooms Full 2
Bathrooms Half 1
Rooms Total 7
Fireplaces 1
Fireplace Features Gas

Interior

Interior Features Double Vanity, Granite Counters, Kitchen Family Room Combo, Main Level Primary, Pantry, Separate Shower, Walk In Pantry, Walk In Closets, Ceiling Fans, Programmable Thermostat
Flooring Carpet, Tile
Appliances Convection Oven, Dishwasher, Gas Cooktop, Gas Oven, Microwave, Oven, Energy Star Qualified Appliances, Tankless Water Heater
Laundry Electric Dryer Hookup

Exterior

Pool Private No

Parking & Garage

Garage Spaces 2
Attached Garage Yes
Parking Features Attached, Garage

Lot

Lot Size (sq ft) 9,567
Lot Size (acres) 0.2196
Lot Size Source Appraiser
Lot Features Corner Lot

Location

County Harris
MLS Area Major 14
MLS Area Minor Spring/Klein/Tomball
Subdivision Alexander Estates
Postal Code 77375

Utilities

Heating Central, Electric
Cooling Central Air, Electric
Water Source Public
Energy Efficient Appliances, Hvac, Insulation, Thermostat, Water Heater

HOA / Association

HOA Yes
HOA Fee $875
HOA Fee Frequency Annually
HOA Name Transerve

Taxes, Terms & Disclosures

Tax Annual Amount $9,280
Tax Year 2023
Tax Rate (est.) 2.21%
Parcel # 140-699-014-0014
Legal Description LT 14 BLK 5 ALEXANDER ESTATES 3RD R/P
Listing Terms Assumable, Cash, Conventional, FHA, Va Loan
Lease Considered No

Room Layout

§ 04 · 7 rooms · MLS-supplied

Main level · 2

Primary Bedroom 14x18
Office 12x10

Second level · 5

Bedroom 10x12
Game Room 18x18
Bedroom 12x11
Bedroom 10x14
Media Room 13x11

MUD Disclosure (§49.452)

§ 03 · Data moat
● §49.452 Notice
Not in archive
This MUD is not yet in our §49.452 archive. We'll add it on request.

Texas Water Code §49.452 requires districts to publish annual notices with tax rate, bonded indebtedness, and assessed value. Most Harris-area MUDs publish these; a handful managed by Inframark do not.

Request this notice
● What this tells you

The §49.452 notice is the only public document that lists a MUD's exact tax rate, outstanding bond debt, and the assessed value used to compute your taxes — direct from the district, not the MLS. If the district is newer or has more bonds outstanding than its neighbors, your effective tax rate will be higher here than just across the street.

Listing's rolled-up MUD rate — Resolved MUD jurisdiction not mapped Match confidence —

Taxes & Cost of Ownership

§ 04
● Estimated monthly payment
$3,294
30-YR FIXED · ADJUST ASSUMPTIONS BELOW
%
%
Principal & interest$2,521 Property tax$773 Homeowners insuranceTBD
Subtotal (P&I + Tax) $3,294
Yearly HOA fee $875

Illustrative only, not a quote. P&I assumes the values entered above. Insurance and HOA dues vary — consult licensed lender and insurance agent for accurate quote.

● Effective tax rate · 3-year history
2.1874%
ALL 9 TAXING DISTRICTS · 2025 BILL
202320242025
MUD
—
→ stable
School
—
→ stable
City
—
→ stable
County
0.38%
→ stable
Other districts
1.81%
→ stable

HOA & Community

§ 05
● HOA details
$875
ANNUALLY
Association nameTranserve Management co.Inframark Websitevisit Phone(281) 870-0585 Cert on filetx_comptroller
● Community amenities
place_of_worship
Calvary Baptist Church Tomball · 0.5mi
Klein Area Church of Christ · 0.8mi
Faith Tabernacle · 1.3mi
park
Seven Oaks Park and Playground · 0.8mi
· 1.2mi
· 1.6mi
gas_station
Chevron · 1.3mi
Chevron · 1.5mi
H-E-B Fuel · 1.6mi
grocery
Fuel Maxx · 1.4mi
· 1.6mi
Champion Forest Market H-E-B · 1.7mi
restaurant
McDonald's · 1.6mi
Taco Corner · 1.4mi
McDonald's · 1.6mi
bank
Regions Bank · 1.6mi
Bank of America (with Drive-thru ATM) · 2.7mi
Chase Bank · 3.0mi

Broadband & Connectivity

§ 06 · Rolled up from MLS
● Max advertised speed at this address
5,000 Mbps
Fiber available · cable ok
Fiber to the Premises
AT&T
5,000 / 5,000 Mbps
● LOW LATENCY
Coaxial Cable
Xfinity
2,000 / 250 Mbps
● LOW LATENCY
Coaxial Cable
Spectrum
1,000 / 35 Mbps
● LOW LATENCY
Licensed Fixed Wireless
Verizon
300 / 20 Mbps
● LOW LATENCY
NGSO Satellite
Starlink
280 / 30 Mbps
● LOW LATENCY
Copper
AT&T
100 / 20 Mbps
● LOW LATENCY
Licensed Fixed Wireless
T-Mobile
100 / 20 Mbps
● LOW LATENCY
GSO Satellite
Viasat Inc
100 / 3 Mbps
+ 2 additional provider(s)

Environmental Risk

§ 08
X
FEMA Zone
Zone X · Minimal risk
Outside 100-year and 500-year floodplains. No flood insurance required by lender.
PANEL 48201C SFHA NO SOURCE 48201C_LOMC91
🌡 Heat days >95°F
65 days/yr above 95°F
Plus 11 days above 100°F. NOAA station records, 2016-2025 average.
💨 30-day air quality
AQI 48 · Good
Average daily AQI for the 30 days ending 2026-04-01. EPA AQS county monitors. Higher = worse.
🌵 Drought (current)
D1 · Moderate
US Drought Monitor county reading, week of 2026-10-27.
Sources: FEMA NFHL · NOAA GHCN-Daily · EPA AQS · US Drought Monitor. Climate rollup last computed Nov 4, 2026.

Recent Comparable Sales

§ 09
3 comparable sales nearbyAddress-level sold detail is available to registered users. Reach out to Allen for the full comparable-sales report.

Subdivision & Master Plan

§ 10
● Master plan
Alexander Estates
TIER: SUBDIVISION
Subdivision name (MLS)Alexander Estates City · ZIPTomball · 77375 CountyHarris Listings in subdivision161 Active now5 Sold (last 12 mo)0 Curated amenities60
● Year-built distribution
2020s 5

Fire Protection

§ 11
Nearest station
Tomball Fire Department Station 2
· Tomball
Distance
0.8 mi
Straight-line from listing
ISO rating
—
Future data point
Avg. response
—
From incident log (future)

Neighborhood Demographics

§ 12 · Census tract 48201554803 · ACS 2023
Median HH income
$142,734
ACS 2023
Median home value
$361,900
Census self-report
Owner-occupied
93%
2,746 housing units
Bachelor's+
51%
Adults 25+
Median age
36.0
Population 7,549
Work from home
51%
of commuters
Commute 45min+
13%
of commuters
Below poverty
7.7%
tract-level

Amenities & Nearby Places

§ 13

Active listing — amenities should populate from the go-live pipeline. Click to fetch now if missing.

Location & Neighborhood

§ 13
● This Home
21403 Hartwig Court, Tomball, TX 77375
Harris County · 30.08°N, 95.59°W
place_of_worship
Calvary Baptist Church Tomball
0.5 mi · 5 within 2 mi
park
Seven Oaks Park and Playground
0.8 mi · 5 within 2 mi
gas_station
Chevron
1.3 mi · 3 within 2 mi
grocery
Fuel Maxx
1.4 mi · 2 within 2 mi
Interactive map coming in v0.2 — currently showing schematic placement.
● Listing History
Sep 4, 2026 Listed $419,900 Kay Mitchell
Dec 31, 2020 Built —
Status change events from HAR MLS (future: full audit trail)
● Disclosures & Attribution
Listed by Kay Mitchell · Real Estate by Design
Data provided by Houston Realtors Information Service (HAR MLS). Information deemed reliable but not guaranteed. All measurements, square footage, and school assignments should be independently verified. HAR MLS content last updated Oct 17, 2026.
MLS# 34364441 · LIST DATE: Sep 4, 2026 · PARCEL: 140-699-014-0014
R
EHO
REALTOR® · Equal Housing Opportunity
HAR.com Copyright © 2026, Houston Realtors Information Service, Inc. Deemed reliable, not guaranteed — independently verify. HARMLS last updated Nov 5, 2026, 5:19 PM CST. Properties may subsequently be sold or off-market. Equal Housing Opportunity