800 GESSNER RD
Office · Houston · 77024
At a glance
800 GESSNER RD in Houston, TX is listed on the Houston / Harris County property roll as “Office”, HCAD account 0960180000004. The roll records 256,958 sq ft of building area, a 1981 build year and an assessed value of $46,799,107. 13 active business locations at this address appear in public records.
Derived from suite and floor strings in the occupancy records
Which floors show activity
- 122 on record
- 111 on record
- 103 on record
- 9no record
- 81 on record
- 73 on record
- 61 on record
- 51 on record
- 4no record
- 3no record
- 21 on record
- 1no record
Floors are read from suite numbers on Houston / Harris County business records (suite 4900 → floor 49). A floor with no record is not necessarily vacant — it may be mechanical, occupied by the owner, or let to a business whose receipt carries no suite. Receipts also lag reality by months. This shows where the public record places businesses, not a rent roll or an availability report. A stretch of quiet floors is not contiguous space for rent — it is contiguous silence in the record, which is the closest thing the public record has to that question and worth exactly what it costs to check.
Public record — 13 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| RANGER ENERGY SERVICES, LLC | STE 1000 | May 2026 | Texas sales-tax permit | address · medium |
| CATALYZE GBH DEVELOPER, LLC | STE 700 | Aug 2025 | Texas sales-tax permit | address · medium |
| DUFERCO STEEL INC. | STE 1150 | Jul 2025 | Texas sales-tax permit | address · medium |
| HIIG SERVICE COMPANY | STE 600 | Dec 2021 | Texas sales-tax permit | address · medium |
| GPI, LTD. | STE 500 | Jul 2020 | Texas sales-tax permit | address · medium |
| PANASONIC I-PRO SENSING SOLUTIONS CORPORATION OF A | STE 700 | Oct 2019 | Texas sales-tax permit | address · medium |
| ACADEMY OILFIELD RENTALS, LLC | STE 1000 | Jun 2017 | Texas sales-tax permit | address · medium |
| RANGER ENERGY LEASING, LLC | STE 1000 | Apr 2017 | Texas sales-tax permit | address · medium |
| SLW AVIATION, INC. | STE 1270 | Mar 2015 | Texas sales-tax permit | address · medium |
| GAINES GROUP, LLC | STE 200 | Sep 2013 | Texas sales-tax permit | address · medium |
| TEXADIAN ENERGY, INC. | STE 875 C O ONE MEMORIAL | Mar 2013 | Texas sales-tax permit | address · medium |
| TOTAL GAS & POWER NORTH AMERICA INC | STE 700 | Aug 2004 | Texas sales-tax permit | address · medium |
| OKAYA (U S A ) INC | STE 1220 | Jun 1988 | Texas sales-tax permit | address · medium |
Houston / Harris County assessment roll
Parcel record
| Field | Value |
|---|---|
| HCAD account | 0960180000004 |
| Site address | 800 GESSNER RD |
| Land use (DOR) | F1 — Office |
| Building area (actual) | 256,958 sq ft |
| Floors / units / buildings | — / — / 1 |
| Lot size | — |
| Year built | 1981 |
| Zoning (primary) | — |
| Land value | $8,226,900 |
| Building value | — |
| Total assessed value | $46,799,107 |
Recorded owner (assessment roll)
MEMORIAL CITY TOWERS LTD JOHN S ZVARA
Owner mailing address: 945 BUNKER HILL RD STE 400, HOUSTON, TX, 77024
17 Houston office properties share this owner mailing address →
Commercial property is usually held one building per entity; a shared mailbox is how the roll reveals a portfolio. It is evidence of common ownership, not proof.
Location
- Address
- 800 GESSNER RD
- City
- Houston
- ZIP
- 77024
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 800 GESSNER RD compare with other Houston office buildings?
At 256,958 sq ft, 800 GESSNER RD is about 9 times the size of the average office building on the Houston / Harris County roll, which comes to 27,364 sq ft across 11,116 buildings.
Its assessed value works out to $182 per square foot of building area, against $161 across all office floor area on the roll.
Does the owner of 800 GESSNER RD hold other Houston office property?
17 Houston office properties (17 parcels, 3.4M sq ft) are recorded to 12 owner entities sharing this parcel's tax-bill mailing address. A shared mailing address is evidence of common ownership, not proof of it.
What does “Office” mean for this parcel?
The Houston / Harris County roll classifies HCAD account 0960180000004 as “Office” (use code F1). BuildingCensus includes a parcel in its office census when the roll gives it an office-class use, so the label is the county's, not an inference.
Frequently asked questions
Who owns 800 GESSNER RD?
The recorded owner on the Houston / Harris County assessment roll (current) is MEMORIAL CITY TOWERS LTD JOHN S ZVARA. Owner mailing address on file: 945 BUNKER HILL RD STE 400, HOUSTON, TX, 77024.
What companies have offices at 800 GESSNER RD?
13 active business locations at this building appear in Houston / Harris County public records, including RANGER ENERGY SERVICES, LLC, CATALYZE GBH DEVELOPER, LLC, DUFERCO STEEL INC., HIIG SERVICE COMPANY, GPI, LTD.. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 800 GESSNER RD?
The Houston / Harris County roll records 256,958 sq ft of building area, a build year of 1981.
What is the assessed value of 800 GESSNER RD?
$46,799,107 on the Houston / Harris County roll. Assessed values are taxable-roll figures, not market prices.
What is the HCAD account for 800 GESSNER RD?
HCAD account 0960180000004, site address 800 GESSNER RD, Houston. It is the key to look the parcel up in the Harris Central Appraisal District bulk CAMA files (Houston / Harris County).
More around 800 GESSNER RD
- Houston / Harris County office buildings· 11,116 buildings
- ALKF LLC % BLEX EXCHANGE II LP· 17 properties
- RANGER ENERGY SERVICES, LLC· suite STE 1000
- CATALYZE GBH DEVELOPER, LLC· suite STE 700
- DUFERCO STEEL INC.· suite STE 1150
- HIIG SERVICE COMPANY· suite STE 600
- Federal office leases in TX
- Office census — all metros
Everything here comes from public records, and public records go stale. If you know better, say so.
Data provenance — public records only
- Houston / Harris County — Harris Central Appraisal District bulk CAMA files (owner names, mailing addresses, appraised values, and per-building net rentable area — data most counties never publish). Texas is a non-disclosure state, so no sale prices exist in any public record, and Houston issues no universal business licence, so no tenant layer is possible. A partial tenant layer comes from the Texas Comptroller's active sales-tax permit roll: suite-level business locations, but only firms with taxable sales — professional services without them do not appear.
Every fact on this page is drawn from the government records above — no listing sites, no scraped platforms, no third-party images. Facts from public records are uncopyrightable; each tenancy row carries its source and match confidence. Records can lag reality — a business-tax receipt or registration at an address is evidence of occupancy, not a lease confirmation.
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Dataset updated . Source: Houston / Harris County assessment roll, HCAD account 0960180000004.
About this data
Source: Harris Central Appraisal District bulk CAMA files (Houston / Harris County), as published September 20, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “800 GESSNER RD, Houston, TX (HCAD account 0960180000004)”, https://buildingcensus.com/offices/houston/office-building-17e66df4 (data as of September 20, 2026).