# 15 Greenway Plaza East, Houston Apartments in Houston, Texas. It covers 15,188 square feet on the ground. Rates calibrated October 2, 2026. Review by December 31, 2026. Updated October 14, 2026. Method propdata-estimator-v6. ## This building 15 Greenway Plaza East, Houston. Apartments in Houston, Texas. Property ID sp12t4vvk5ahbdv. ## Facts **Facts about 15 Greenway Plaza East, Houston** | Fact | Value | Source | | --- | --- | --- | | Address | 15 Greenway Plaza East, Houston, TX 77046 | [USA Structures](https://skypsi.com/property/tx/houston/sp12t4vvk5ahbdv-15-greenway-plaza-east-houston/#how-we-know) | | Building type | Apartments | [USA Structures and SkyPSI estimator](https://skypsi.com/property/tx/houston/sp12t4vvk5ahbdv-15-greenway-plaza-east-houston/#how-we-know) | | Footprint | 15,188 square feet | [USA Structures](https://skypsi.com/property/tx/houston/sp12t4vvk5ahbdv-15-greenway-plaza-east-houston/#how-we-know) | | Perimeter | 642.12 feet | [USA Structures](https://skypsi.com/property/tx/houston/sp12t4vvk5ahbdv-15-greenway-plaza-east-houston/#how-we-know) | | Height | 257.64 feet | [USA Structures](https://skypsi.com/property/tx/houston/sp12t4vvk5ahbdv-15-greenway-plaza-east-houston/#how-we-know) | | Height survey year | 2018 | [USA Structures](https://skypsi.com/property/tx/houston/sp12t4vvk5ahbdv-15-greenway-plaza-east-houston/#how-we-know) | | Stories | 20 stories | [USA Structures](https://skypsi.com/property/tx/houston/sp12t4vvk5ahbdv-15-greenway-plaza-east-houston/#how-we-know) | | Exterior wall area | 165,438 square feet | [SkyPSI estimator](https://skypsi.com/property/tx/houston/sp12t4vvk5ahbdv-15-greenway-plaza-east-houston/#how-we-know) | | Parcel number | 1149030010002 | [County and state public records](https://skypsi.com/property/tx/houston/sp12t4vvk5ahbdv-15-greenway-plaza-east-houston/#how-we-know) | | Land use | Z5 | [County and state public records](https://skypsi.com/property/tx/houston/sp12t4vvk5ahbdv-15-greenway-plaza-east-houston/#how-we-know) | | Year built | 1980 | [County and state public records](https://skypsi.com/property/tx/houston/sp12t4vvk5ahbdv-15-greenway-plaza-east-houston/#how-we-know) | | Stories on the parcel record | 1 story | [County and state public records](https://skypsi.com/property/tx/houston/sp12t4vvk5ahbdv-15-greenway-plaza-east-houston/#how-we-know) | | Building area on the parcel record | 770 square feet | [County and state public records](https://skypsi.com/property/tx/houston/sp12t4vvk5ahbdv-15-greenway-plaza-east-houston/#how-we-know) | ## Cost ranges Whole-building ranges from the SkyPSI estimator, calibrated October 2, 2026. Grade C: modelled from the Texas calibration. [What the grades mean](https://skypsi.com/estimates/methodology/confidence-grades/). ### Exterior soft wash **Exterior soft wash from a boom lift and by rope access, whole building** | Service | Low | Most likely | High | | --- | --- | --- | --- | | Facade wash, conventional access | $25,000 | $44,500 | $74,500 | ### Window cleaning **Window cleaning by rope access, whole building** | Service | Low | Most likely | High | | --- | --- | --- | --- | | Exterior windows, rope access | $33,000 | $66,000 | $115,500 | | Windows inside and out, rope access | $36,500 | $72,500 | $128,500 | ## Best method - [Exterior soft wash](https://skypsi.com/estimates/exterior-soft-wash/): Boom lift and Rope access fit this building at the same cost, most likely $44,500. - [Window cleaning](https://skypsi.com/estimates/window-cleaning/): Rope access fits this building, most likely $66,000. ## Similar buildings nearby - [14 Greenway Plaza East, Houston](https://skypsi.com/property/tx/houston/spgvmg6ejzxx3sg-14-greenway-plaza-east-houston/) - [15 E Greenway Plz, Houston](https://skypsi.com/property/tx/houston/spsq17d6zh16wrk-15-e-greenway-plz-houston/) - [3833 Cummins, Houston](https://skypsi.com/property/tx/houston/spwdh8rwa6be6ed-3833-cummins-houston/) ## How we know Each fact names the source it comes from. A building file carries the source of each field, and SkyPSI shows that source beside the fact. - [County and state public records](https://comptroller.texas.gov/taxes/property-tax/): Situs addresses, parcel numbers, land use, year built and floor counts from county appraisal districts and state open data. - [USA Structures](https://disasters.geoplatform.gov/USA_Structures/): Building footprints, heights and occupancy from FEMA's USA Structures. - [SkyPSI estimator](https://skypsi.com/estimates/methodology/sources-and-licensing/): SkyPSI's own price model, calibrated rates and building-class rules. Cost ranges come from the SkyPSI estimator, calibrated October 2, 2026. [How a SkyEstimate is built](https://skypsi.com/estimates/methodology/how-a-skyestimate-is-built/). [Request a Quote](https://skypsi.com/request-a-quote) --- Sources: County and state public records, USA Structures, SkyPSI estimator. Parcel and address facts from county appraisal districts and state open-data programs (public records). https://comptroller.texas.gov/taxes/property-tax/ Building footprints: USA Structures, FEMA Response Geospatial Office, Oak Ridge National Laboratory and U.S. Geological Survey (CC BY 4.0). https://disasters.geoplatform.gov/USA_Structures/ Page: https://skypsi.com/property/tx/houston/sp12t4vvk5ahbdv-15-greenway-plaza-east-houston/ JSON: https://skypsi.com/property/tx/houston/sp12t4vvk5ahbdv-15-greenway-plaza-east-houston.json Content license: https://skypsi.com/content-license.txt