BuildingCensus

811 MAIN ST

Office · Houston · 77002

At a glance

811 MAIN ST in Houston, TX is listed on the Houston / Harris County property roll as “Office”, HCAD account 1305070010001. The roll records 1,381,421 sq ft of building area, a 2008 build year and an assessed value of $428,426,190. 14 active business locations at this address appear in public records.

Active records here
14
business-tax + registry entities
Building area
1,381,421
sq ft (county roll)
Floors
—
county roll
Year built
2008
vintage
Assessed value
$428.4M
current roll
Assessed / sq ft
$310
assessed value per sq ft
Last sold
—
no transfer on record
Sale / sq ft
—
not derivable from the record

Derived from suite and floor strings in the occupancy records

Which floors show activity

11 of 42 floors show activityfrom 12 suite-numbered receipts
  1. 421 on record
  2. 41no record
  3. 40no record
  4. 39no record
  5. 38no record
  6. 371 on record
  7. 36no record
  8. 35no record
  9. 341 on record
  10. 33no record
  11. 32no record
  12. 31no record
  13. 30no record
  14. 291 on record
  15. 28no record
  16. 271 on record
  17. 26no record
  18. 251 on record
  19. 24no record
  20. 23no record
  21. 221 on record
  22. 21no record
  23. 202 on record
  24. 19no record
  25. 181 on record
  26. 17no record
  27. 16no record
  28. 15no record
  29. 14no record
  30. 13no record
  31. 12no record
  32. 11no record
  33. 10no record
  34. 9no record
  35. 8no record
  36. 7no record
  37. 6no record
  38. 5no record
  39. 41 on record
  40. 3no record
  41. 2no record
  42. 11 on 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 — 14 matched business locations

Tenants & business locations

CompanySuite / floorSinceSourceMatch
3 ES INNOVATION INC.STE 2200Aug 2026Texas sales-tax permitaddress · medium
COZEN O'CONNORSTE 2000Oct 2025Texas sales-tax permitaddress · medium
NEXTDIRECT LLC—Apr 2025Texas sales-tax permitaddress · medium
LATHAM & WATKINS LLPSTE 3700Mar 2025Texas sales-tax permitaddress · medium
RESTAURANT ASSOCIATES, LLCFL 4Nov 2024Texas sales-tax permitaddress · medium
QUORUM BUSINESS SOLUTIONS, INC.STE 2000Sep 2023Texas sales-tax permitaddress · medium
MURPHY'S DELI 811 MAINSTE 150Apr 2023Texas sales-tax permitaddress · medium
HOLLAND & KNIGHT LLPSTE 2500Jan 2023Texas sales-tax permitaddress · medium
TERRAGENE LLCSTE 2900Feb 2020Texas sales-tax permitaddress · medium
CRESTWOOD ENERGY SERVICES LLCSTE 3400Mar 2019Texas sales-tax permitaddress · medium
SEAWOLF WATER RESOURCESSTE 1875Jan 2019Texas sales-tax permitaddress · medium
TWO SIGMAFL 27Aug 2016Texas sales-tax permitaddress · medium
REED SMITH LLP—May 2014Texas sales-tax permitaddress · medium
BG HOLDCO LLCSTE 4250Jun 2013Texas sales-tax permitaddress · medium

Houston / Harris County assessment roll

Parcel record

FieldValue
HCAD account1305070010001
Site address811 MAIN ST
Land use (DOR)F1 — Office
Building area (actual)1,381,421 sq ft
Floors / units / buildings— / — / 1
Lot size—
Year built2008
Zoning (primary)—
Land value$19,273,500
Building value—
Total assessed value$428,426,190

Recorded owner (assessment roll)

BG HOLDCO LLC % INVESCO ADVISORS INC

Owner mailing address: 2001 ROSS AVE STE 3400, DALLAS, TX, 75201

11 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
811 MAIN ST
City
Houston
ZIP
77002

Within ~650 m

Nearby office buildings

No other office parcels within ~650 m.

How does 811 MAIN ST compare with other Houston office buildings?

At 1,381,421 sq ft, 811 MAIN ST is about 50 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 $310 per square foot of building area, against $161 across all office floor area on the roll.

Does the owner of 811 MAIN ST hold other Houston office property?

11 Houston office properties (11 parcels, 5.2M sq ft) are recorded to 9 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 1305070010001 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 811 MAIN ST?

The recorded owner on the Houston / Harris County assessment roll (current) is BG HOLDCO LLC % INVESCO ADVISORS INC. Owner mailing address on file: 2001 ROSS AVE STE 3400, DALLAS, TX, 75201.

What companies have offices at 811 MAIN ST?

14 active business locations at this building appear in Houston / Harris County public records, including 3 ES INNOVATION INC., COZEN O'CONNOR, NEXTDIRECT LLC, LATHAM & WATKINS LLP, RESTAURANT ASSOCIATES, LLC. Public records under-count tenants that don't hold a local receipt or register the address.

How big is 811 MAIN ST?

The Houston / Harris County roll records 1,381,421 sq ft of building area, a build year of 2008.

What is the assessed value of 811 MAIN ST?

$428,426,190 on the Houston / Harris County roll. Assessed values are taxable-roll figures, not market prices.

What is the HCAD account for 811 MAIN ST?

HCAD account 1305070010001, site address 811 MAIN ST, Houston. It is the key to look the parcel up in the Harris Central Appraisal District bulk CAMA files (Houston / Harris County).

More around 811 MAIN ST

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 1305070010001.

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, “811 MAIN ST, Houston, TX (HCAD account 1305070010001)”, https://buildingcensus.com/offices/houston/office-building-701f9402 (data as of September 20, 2026).