Updated: Jul 06, 2026
Location and Projects
Address
3013 E 148TH PL, Thornton, CO, 80602
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Grein Construction Inc
Serving Thornton, Colorado and the surrounding areas, Grein Construction Inc brings 37 years of experience to residential and commercial construction projects. The company specializes in new construction, remodels, and additions, handling a variety of project types from custom homes to multi-family and light commercial buildings. Grein Construction Inc manages projects from foundation to finish, including framing, exterior finishing, and interior build-outs. The firm works with local property owners, developers, and business clients seeking reliable general contracting services. With decades of industry experience, Grein Construction Inc utilizes established construction methods and coordinates with local suppliers and trade partners to deliver completed structures that meet local building codes and standards.
Grein Construction Inc Services
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Grein Construction Inc Contact Information
Phone Number: (303) 598-1622
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Address: 3013 E 148TH PL, Thornton, CO 80602
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Grein Construction Inc Thornton
Quality
97
82nd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Grein Construction Inc has a BuildZoom score of 97, which places them above 82% of 55,949 contractors in Colorado.
Activity
|
2 projects
|
2025 |
|
3 projects
|
2023 |
Our building permit records indicate that Grein Construction Inc has worked on at least
5.0 projects over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Pricing
|
1 project
|
$5k-$20k |
|
1 project
|
$50k-$100k |
|
1 project
|
$100k-$250k |
|
1 project
|
$250k-$500k |
|
1 project
|
$1mil+ |
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
Building Permits by Grein Construction Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Addition 2 foot section onto existing dining room. move kitchen into dining room. remove existing deck and building new slightly larger deck. remove and repour slab under deck. remove siding and brick on exterior of home and replace with stucco and stone
Valuation:
$430,960
Permit #:
BP-25-00872
Status:
complete
Fee:
$12,189
Permit Type:
N/A
Building Type:
Residential singl...
Building a new garage with eng. plans. there will be no electrical heat or plumbing in the building
Valuation:
$168,000
Permit #:
BDP20-0978
Status:
final
Fee:
$2,520
Permit Type:
New
Building Type:
Residential
Building a detached garage
Valuation:
$188,000
Permit #:
BP-20-01423
Status:
issued
Fee:
$2,580
Permit Type:
N/A
Building Type:
Commercial/indust...
Master bathroom remodel-remove 1 window (6x4.6) and install a (5x2)
Valuation:
$13,800
Permit #:
BP-22-04102
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential singl...
768 sf detached wood frame music room storage building on 768 sf finished basement - electric and mechanical included - 14x5 covered porch - air conditioning included - 4% okay
Valuation:
$39,268
Permit #:
ASN18-0004
Status:
final
Fee:
$780
Permit Type:
N/A
Building Type:
N/A
438 residence. garage detached garage/unfin. storage 1620
Valuation:
N/A
Permit #:
1910742
Status:
issued
Fee:
N/A
Permit Type:
438 residence. Ga...
Building Type:
N/A
16x19
Valuation:
N/A
Permit #:
BLDG19-2259
Status:
final
Fee:
$1,021
Permit Type:
Deck
Building Type:
N/A
1350 sf wood frame addition on 1350 sf crawlspace & 1062 sf attached garage addition to existing dwelling built in 1910 - for one bedroom one 3/4 bathroom one furnace room one family room & one foyer - 12x14 covered patio & 12x8 covered porch - air conditioning and one 0-clearance fireplace included - ref: coc13-00147 bcr11-00287 bcn-030113 eln-021043 el-9710005
Valuation:
$195,365
Permit #:
RSA17-0150
Status:
final
Fee:
$1,940
Permit Type:
N/A
Building Type:
N/A
250 sf wood frame addition on slab and approx. 300 sf interior remodel of existing attached garage - includes electric and mechanical - 6x8 covered porch - for living space quilting room and personal storage - ref: bp27155 bp31320 bp39504 bcr16-00214 bcr16-00619 rsa17-0072
Valuation:
$0
Permit #:
RSA17-0102
Status:
In Review
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
701 residence. reroof re-roof dimensional 34
Valuation:
N/A
Permit #:
1914142
Status:
issued
Fee:
N/A
Permit Type:
701 residence. Re...
Building Type:
N/A
Basement finish-bathroom 2 finished rooms replace furnace and hot water heater. install a tankless hot water heater
Valuation:
$218,000
Permit #:
BP-23-01140
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential singl...
250 sf wood frame addition on slab and approx. 300 sf interior remodel of existing attached garage - includes electric and mechanical - 6x8 covered porch - for living space quilting room and personal storage - ref: bp27155 bp31320 bp39504 bcr16-00214 bcr16-00619 rsa17-0072
Valuation:
$28,163
Permit #:
RSA17-0102
Status:
final
Fee:
$893
Permit Type:
N/A
Building Type:
N/A
Contractor has amended his plans for a continous slipper wall under joist for garage floor instead of single post see file------ remodel 489 sf attached garage in existing dwelling built 2002 - convert to living room mud room & laundry room remove existing garage door and install three new doors - also 1600 sf basement finish for bedroom game room craft room playroom music room office... see more
Valuation:
$88,000
Permit #:
BCR11-00767
Status:
final
Fee:
$1,032
Permit Type:
N/A
Building Type:
N/A
New custom home (also see bdp21-2707)
Valuation:
$2,300,000
Permit #:
BDP22-0195
Status:
complete
Fee:
$21,695
Permit Type:
New
Building Type:
Residential
768 sf detached wood frame music room storage building on 768 sf finished basement - electric and mechanical included - 14x5 covered porch - air conditioning included - 4% okay
Valuation:
$39,268
Permit #:
ASN18-0004
Status:
final
Fee:
$779
Permit Type:
N/A
Building Type:
N/A
Residence - basement finish
Valuation:
$197,000
Permit #:
BDP16-3706
Status:
final
Fee:
$2,815
Permit Type:
Alteration
Building Type:
Residential
Insulate sheetrock 3 furnaces gas line to furnaces 20x50 foot driveway slab
Valuation:
$27,700
Permit #:
BP-20-01423-02
Status:
complete
Fee:
$498
Permit Type:
N/A
Building Type:
Commercial/indust...
1619 sf 2 story new single family dwelling on 851 sf unfinished basement - 584 sf attached garage - 64 sf and 250 sf covered patio(s) - 1 gas log fireplace - for principal dwelling ref: re-3484 in process
Valuation:
N/A
Permit #:
BCS-030015
Status:
final
Fee:
$3,879
Permit Type:
N/A
Building Type:
N/A
Building/building history/building conversion history/na
1994-05-05
Will be building a single story residence. the main floor will be 1650 sq ft. there will be 1 bay window and 2 sky- lights. the basement will be unfinished. the garage will be 28 x 24 =672 there will be a patio on the north side of the house that will be 19 x 8
Valuation:
$0
Permit #:
BP43510
Status:
Expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building/building history/building conversion history/na
1993-07-20
Will be building a single family two story home. the main floor is 1236 sq. feet and the second floor is 814 sq. feet. it will be on a crawlspace and a unfinished basement. the crawlspace is 523 sq. feet and the basement is 1225 sq. feet. there will be an attached two car garage that is 528 sq. feet and is on the north side and there is a patio on the west side. there will be (2) gas ... see more
Valuation:
$0
Permit #:
BP41576
Status:
Finaled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Grein Construction Inc License info
Verified License
| License # | LCC2015006185 |
| Status | Active |
| City | Thornton |
| Type | Class B Building Contractor Expires 2027 03 26 |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for Grein Construction Inc at the Thornton City Development Contractor License.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | GCC4655860 |
| Status | Active |
| City | Lafayette |
| Type | General Class C |
- When BuildZoom last verified this license, it had an expiration date of April, 2020. Check the current license status of Grein Construction Inc with the City of Lafayette
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 27538 |
| Status | Active |
| City | Thornton |
| Type | Class B Building |
- BuildZoom has not verified this license since October, 2016.
Verify this license's status for Grein Construction Inc at the Thornton City Development Contractor License.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 25594 |
| Status | Active |
| City | Thornton |
| Type | Class C Residential |
- BuildZoom has not verified this license since July, 2015.
Verify this license's status for Grein Construction Inc at the Thornton City Development Contractor License.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 23564 |
| Status | Active |
| City | Thornton |
| Type | Class B Building |
- BuildZoom has not verified this license since July, 2015.
Verify this license's status for Grein Construction Inc at the Thornton City Development Contractor License.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | LIC-0003176-GENCC |
| Status | Inactive |
| City | Boulder |
| Type | General |
| Class | Class C |
- According to the Boulder Licensing Board, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Grein Construction Inc at the Boulder Licensing Board.
This is a sample of licensing data; click here to access a complete history.
97
BuildZoom Score
42
Permits
- Building permit records show that Grein Construction Inc has worked on 42 permitted projects.
Grein Construction Inc Employees
KG
Kenneth Grein
Owner