Updated: Sep 14, 2025
Location and Projects
Address
45501 Helm St., Plymouth, MI, 48170
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RA Demattia Company Architect
RA Demattia Company LLC, 45501 Helm St, Plymouth, MI (Owned by: Warren K Owen) holds a Contractor license and 6 other licenses according to the Ann Arbor license board.
Their BuildZoom score of 91 ranks in the top 37% of 167,179 Michigan licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring RA Demattia Company LLC, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
RA Demattia Company LLC Services
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RA Demattia Company LLC Contact Information
Phone Number: (734) 354-6112
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Address: 45501 Helm St., Plymouth, MI 48170
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RA Demattia Company LLC Plymouth
Quality
91
63rd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
RA Demattia Company LLC has a BuildZoom score of 91, which places them above 63% of 167,179 contractors in Michigan.
Activity
|
1 project
|
2024 |
Our building permit records indicate that RA Demattia Company LLC has worked on at least
1.0 project over the past 2 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
|
$250k-$500k |
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 RA Demattia Company LLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
Interior remodel ( 6 offices 1 conference room workstations) brembo brakes **stamped final approved plans must be put into digital format and email to [email protected] before a final inspection will be scheduled or cofo will be issued**(done no mep's included as they are a design build)
Valuation:
$100,000
Permit #:
PB21-1138
Status:
issued
Fee:
$1,585
Permit Type:
Ind/alt/add
Building Type:
N/A
Install (1) dyno cell brembo brakes 10-12-18 mark lewis chief building official is approving generator location without pc approval stating no utilities were behind the building. **stamped final approved plans must be put into digital format and email to [email protected] before a final inspection will be scheduled or cofo will be issued**
Valuation:
$175,000
Permit #:
PB18-0950
Status:
final
Fee:
$3,010
Permit Type:
Ind/alt/add
Building Type:
N/A
To construct 3700 sf. kitchen and conference room addition and remodel interior of existing community mental health building and use per plan attached. (3, 560sf). additional sprinkler plan required prior to installation soil erosion permit required before any ground work begins
Valuation:
N/A
Permit #:
P08B0004
Status:
final
Fee:
$8,183
Permit Type:
Addition
Building Type:
N/A
Construct 3080 sq ft addition on the east end of building for vestibule narthex kitchenette cry room ushers and mens/womens toilets rooms. new vestibule s/w side of building. rebuild messanine (1340 sq ft) and reconstruct sanctuary wall by altar
Valuation:
N/A
Permit #:
PC20-0245
Status:
issued
Fee:
$32,453
Permit Type:
Add/alter/repair
Building Type:
N/A
Erect 1 story (mixed use) duplex industrial speculative building. project(demco 29, llc) demco 56 k lot 25 of the huron center commercial & industrial park phase ii. all steel structure w/50, 428 of warehouse & 5, 604 of office-unit has water/sewer#135336 approved per application submitted w/specs. & plans-separate permits required for interior) application states shell
Valuation:
N/A
Permit #:
PB01-1247
Status:
final
Fee:
$5,033
Permit Type:
Industrial new bu...
Building Type:
N/A
Interior buildout of office/shop high tech rental publishing company's distribution center per submitted application and according to all township codes. mbc 2000 (ref: b01-00371)
Valuation:
N/A
Permit #:
PB04-00020
Status:
final
Fee:
$11,090
Permit Type:
Ind
Building Type:
N/A
New shell space interior renovation: 13, 652 sq. ft. of gymnasium area & locker facilities to be used as powerhouse gym. approved per specs submitted. call for all necessary inspections
Valuation:
$240,485
Permit #:
PB06-0607
Status:
final
Fee:
$2,671
Permit Type:
Alter/repair
Building Type:
N/A
Tenant building out of part of an existing building (19, 728 sq. ft.). space to be used as: flint group inc. approved per specs submitted & inspector's note(s) on site copy of plan. call for all necessary inspections
Valuation:
$688,860
Permit #:
PB06-1209
Status:
final
Fee:
$5,591
Permit Type:
Alter/repair
Building Type:
N/A
Adding additional interior space to commercial building housing washtenaw community college as per specs submitted and approved approved plans must be on site when inspection is made otherwise inspection will not be made
Valuation:
$93,909
Permit #:
PB06-0056
Status:
final
Fee:
$1,008
Permit Type:
Addition
Building Type:
N/A
Renovations of existing office space as per sub- mitted plans and according to all township codes mbc 2003
Valuation:
N/A
Permit #:
PB04-01078
Status:
final
Fee:
$9,000
Permit Type:
Ind
Building Type:
N/A
Construction of foundation & shell per submitted application and according to all township codes. mbc 2003
Valuation:
$2,067,000
Permit #:
PB04-00454
Status:
final
Fee:
$23,350
Permit Type:
Ind
Building Type:
N/A
Building out of suite in existing building - new occupant to be perk & brew as per specs and plans submitted and approved call for all inspections
Valuation:
$320,750
Permit #:
PB06-0036
Status:
final
Fee:
$3,011
Permit Type:
Alter/repair
Building Type:
N/A
Installation of a fire alarm system in a mixed use commercial/residential building (residential units and common areas on floors 1-5) as per plans
Valuation:
N/A
Permit #:
BLD2014-00125
Status:
N/A
Fee:
N/A
Permit Type:
Alterations
Building Type:
Lofts
Tenant improvements as per submitted plans and ac- cording to all township codes - mrc 2003
Valuation:
N/A
Permit #:
PB04-00824
Status:
final
Fee:
$9,550
Permit Type:
Ind
Building Type:
N/A
Shell foundation permit for new metro west executive auto wash. electrical and water service to be installed by contractor. c.v. $ 600, 001
Valuation:
$600,001
Permit #:
PB06-0651
Status:
final
Fee:
$6,540
Permit Type:
Ind/new
Building Type:
N/A
Remodel existing bathrooms and stairway egress federal mogul plumbing note: approved pending bradley type sink meets current ada requirements (i want specs on this sink)
Valuation:
$54,900
Permit #:
PB13-0040
Status:
final
Fee:
$1,070
Permit Type:
Ind/alt/add
Building Type:
N/A
Remove & replace 29 existing carports (near this building)
Valuation:
$100,000
Permit #:
BLDG15-1883
Status:
UNDER REVIEW
Fee:
$1,450
Permit Type:
Commercial add/alt
Building Type:
N/A
New commercial lot 30 brembo brakes (shell & foundation only) (turned to full building permit 8/18/2009)
Valuation:
$5,100,000
Permit #:
PB08-0879
Status:
final
Fee:
$52,390
Permit Type:
Ind/new
Building Type:
N/A
Construction of a screened enclosure and installation of pre-manufactured storage building for hazardous materials. approved plans must be on site when inspection is made otherwise inspection will not be made
Valuation:
$40,000
Permit #:
PB05-2367
Status:
final
Fee:
$330
Permit Type:
Addition
Building Type:
N/A
Interior demolish of existing concrete pit and a new pit installed for tenant's equipment as per specs and plans submitted and approved
Valuation:
$168,000
Permit #:
PB07-1000
Status:
final
Fee:
$1,526
Permit Type:
Ind alter/repair
Building Type:
N/A
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License # CONT-54118
Ann Arbor, MI
125
BZ Score
$91K
Avg Project
-
Projects
121
BZ Score
$20K
Avg Project
-
Projects
148
BZ Score
-
Avg Project
-
Projects
RA Demattia Company LLC Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
RA Demattia Company LLC License info
License Not Verified
| License # | CONT-2961 |
| Status | Active |
| City | Ann Arbor |
| Type | Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2025. Check the current license status of RA Demattia Company LLC with the The City of Ann Arbor, MI
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | AL7150 |
| Status | Active |
| State | Alabama |
| Type | Architect |
- BuildZoom has not verified this license since April, 2013.
Verify this license's status for RA Demattia Company LLC at the Alabama Board of Architects.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 4238 |
| Status | Active |
| State | Tennessee |
| Type | Architectural Firms |
- When BuildZoom last verified this license, it had an expiration date of June, 2014. Check the current license status of RA Demattia Company LLC with the Tennessee Department of Commerce and Insurance
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | CONT-5061 |
| Status | Active |
| City | Ann Arbor |
| Type | Contractor, Contractor |
- BuildZoom has not verified this license since January, 2010.
Verify this license's status for RA Demattia Company LLC at the The City of Ann Arbor, MI.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | LIC-7143 |
| Status | Active |
| City | Ann Arbor |
| Type | Contractor, Builder |
- BuildZoom has not verified this license since January, 2010.
Verify this license's status for RA Demattia Company LLC at the The City of Ann Arbor, MI.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | ARC-401304 |
| Status | Active |
| State | Colorado |
| Type | Architect |
- When BuildZoom last verified this license, it had an expiration date of October, 2013. Check the current license status of RA Demattia Company LLC with the Colorado Division of Professions and Occupations
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | LIC-0369 |
| Status | Inactive |
| City | Ann Arbor |
| Type | Contractor |
- According to the The City of Ann Arbor, MI, 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 RA Demattia Company LLC at the The City of Ann Arbor, MI.
This is a sample of licensing data; click here to access a complete history.
91
BuildZoom Score
69
Permits
- Building permit records show that RA Demattia Company LLC has worked on 69 permitted projects.
RA Demattia Company LLC Employees
DG
Demattia Group
Owner
DP
Dembowski, Stanley Peter
Owner
JC
James C Capo
Owner
RC
R. A. De Mattia Company
Owner
WO
Warren K Owen
Owner
WO
Warren Keith Owen
Owner