Funding type
This project is privately funded, on private land for private use.
Castelion Corporation - Interior Renovation in Allen, TX
718 S. Greenville Avenue, Suite 100, Allen, TX, 75002
Castelion Corporation - Interior Renovation is a renovation/alteration project at 718 S. Greenville Avenue, Suite 100, Allen, in Collin County, TX, tracked from its Texas Department of Licensing and Regulation (TDLR) registration. Scheduled to finish Sep 2026 per its TDLR filing; no final inspection recorded yet. The project has an estimated value of $125K across about 893 sq ft.
- Estimated project value
- $125K
About this figure
Estimated construction cost supplied in the TDLR filing. This is not a current property appraisal or a final construction invoice.
- Reported floor area
- 893 ft²
About this figure
Square footage reported for this scope of work. It may cover only part of a larger property.
- Estimated cost / ft²
- $140/sqft
About this figure
Calculated from this filing’s estimated cost divided by its reported square footage. Available only when both figures are supplied; it is not a market benchmark.
- Scheduled duration
- 5 months
About this figure
The interval between the filed start and completion dates. These dates describe the proposed schedule and do not measure actual construction progress.
The project record
Project timeline
Explore filed milestones and scheduled dates. Open a milestone for its source.
3 timeline dates shown.
Project registered · TDLR filing
Registration of the project with the Texas Department of Licensing and Regulation.
Source: TDLR filing
View source recordScheduled construction start · Scheduled date
A date supplied in the filing; this does not confirm that work started or finished.
23 days after the preceding date shown.
Source: TDLR filing
View source recordScheduled completion · Scheduled date
A date supplied in the filing; this does not confirm that work started or finished.
153 days after the preceding date shown.
Source: TDLR filing
View source record
📰About Castelion Corporation - Interior Renovation
Allen Business Center II is undergoing an 893 square foot interior renovation at 718 S. Greenville Avenue, Suite 100, in Allen, Texas. The project, filed as Castelion Corporation - Interior Renovation, is privately funded and targeted for September 2026. Construction is scheduled to begin in April 2026, with a total estimated cost of $125,000.
The scope of work involves demolishing an existing single restroom, office, and break area. These spaces will be reconfigured to create a men's restroom, a women's restroom, a shower, and a new break area. The renovation also includes installing vinyl flooring in high-traffic zones. The work is classified as a renovation or alteration within Collin County.
Brohard Architecture, LLC serves as the design firm of record for this project. Belinda S Koestle is the registered accessibility specialist associated with the filing. The project was registered with the Texas Department of Licensing and Regulation (TDLR) in March 2026. Plan review is pending, and the status is listed as Project Registered.
The estimated cost of $125,000 places the project below the median estimated cost of $220,000 for similar renovation filings in Collin County. The scheduled build window of 153 days is longer than the county median of 92 days. The cost per square foot is calculated at $140, which is above the county median of $78 per square foot.
Greentech One LP has two other TDLR-registered projects totaling $272,520, including Tech Center Three in Allen which has closed. Brohard Architecture, LLC has three other registered projects totaling $1,269,220, including Brookside Office Park in Arlington. The site is located in ZIP code 75002, a predominantly owner-occupied area with a median household income of $129,306 according to U.S. Census estimates.
Project Details and Status
Nearby businesses include Wienerschnitzel, Extra Space Storage, and Caliber Collision. A public record from the City of Allen notes the property may be used for a gymnastics and sports training facility. The project remains in the registration phase, with completion targeted for September 2026.
Project Registered
Project has been registered with TDLR and is in pre-construction phase
Follow this project
Get an email when the status changes — permits pulled, construction started, work finished. Free, and nothing else.
Or watch all projects in 75002 (Allen)
One email per change. Unsubscribe in one click. Privacy.
Castelion Corporation - Interior Renovation is a Renovation/Alteration project located at 718 S. Greenville Avenue, Suite 100, Allen, TX 75002 in Allen, Texas. The project has an estimated value of $125K covering 893 sq ft. Greentech One LP is the property owner and Brohard Architecture, LLC is the design firm of record. The project was registered with TDLR on March 23, 2026.
Frequently Asked Questions
What is the total cost of the renovation?
The estimated cost for the Allen Business Center II renovation is $125,000. This figure is reported in the TDLR filing for the 893 square foot interior alteration project.
When is the project expected to be finished?
The project is targeted for September 2026. Construction is scheduled to start in April 2026, and the project was registered with TDLR in March 2026.
Who owns the property being renovated?
Greentech One LP is the owner of record for the project. The design firm of record is Brohard Architecture, LLC, and the registered accessibility specialist is Belinda S Koestle.
What specific changes are being made to the interior?
The scope includes demolishing a single restroom, office, and break area. These will be replaced with a men's restroom, women's restroom, shower, and break area, plus vinyl flooring in high-traffic areas.
Is the business currently open?
The TDLR record indicates the project is registered and targeted for September 2026. It does not provide information on business opening dates or current operational status.
What is Castelion Corporation - Interior Renovation?
Castelion Corporation - Interior Renovation is a renovation/alteration project at 718 S. Greenville Avenue, Suite 100 in Allen, Texas, registered with the Texas Department of Licensing and Regulation (TDLR). Scope of work: Demolishing a single restroom, office and break area to create a Men's restroom, Women's restroom, shower and break area and providing vinyl flooring at high traffic areas. Renovation area is 893 sq ft.
Is Castelion Corporation - Interior Renovation open in Allen?
Castelion Corporation - Interior Renovation was scheduled to finish construction in Sep 2026 according to its TDLR registration, but TDLR has not recorded a final accessibility inspection, so its opening status is not confirmed in the public record.
Where is Castelion Corporation - Interior Renovation located?
Castelion Corporation - Interior Renovation is located at 718 S. Greenville Avenue, Suite 100, Allen, TX, 75002, in Collin County.
Who is the owner or developer of Castelion Corporation - Interior Renovation?
Greentech One LP is the property owner/developer of record for Castelion Corporation - Interior Renovation, per its TDLR project registration.
Who is the architect or design firm for Castelion Corporation - Interior Renovation?
Brohard Architecture, LLC is the design firm of record for Castelion Corporation - Interior Renovation, according to its TDLR filing.
How much does Castelion Corporation - Interior Renovation cost and how big is it?
Castelion Corporation - Interior Renovation has an estimated construction value of $125K and approximately 893 square feet (about $140/sqft), based on its TDLR filing.
Scope of Work
Demolishing a single restroom, office and break area to create a Men's restroom, Women's restroom, shower and break area and providing vinyl flooring at high traffic areas. Renovation area is 893 sq ft.
Note: This project is registered under the Texas Accessibility Standards (TAS) program. TDLR registration is required for commercial and public facility construction to ensure compliance with accessibility requirements under Texas Government Code Chapter 469.
Location & views
718 S. Greenville Avenue, Suite 100, Allen, TX, 75002
Related Projects
Same Owner
$5.5M totalWatch all construction in 75002 (Allen)
A short email when anything new is filed in this ZIP. One ZIP free, weekly.
Unsubscribe in one click. Privacy.
Keep exploring
What else is changing in Allen?
See the surrounding filings, compare the reported schedules, and follow the places that matter to you.