Updated: May 03, 2026
Location and Projects
Address
1220 Oakland Blvd, Walnut Creek, CA, 94596
Use our bidding system to
request a quote
Blackstone Development, Inc Photos
Blackstone Development Construction
Blackstone Development, Inc, 1220 Oakland Blvd, Walnut Creek, CA (Owned by: Michael Lars Nilsson) holds a Renovation license and 2 other licenses according to the Environmental Protection Agency license board.
Their BuildZoom score of 113 ranks in the top 3% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Blackstone Development, Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Blackstone Development, Inc Services
Start a project today:
Medium Multi-Family New Con...
Multi-Room Remodel
Kitchen Remodel
Bathroom Remodel
Basement Remodel
Medium Multi-Family Remodel...
Other Residential Remodel
Office Renovation
Restaurant Renovation
Retail Renovation
Other Commercial Renovation
Restaurant New Construction
Retail New Construction
Office Building New Constru...
Industrial New Construction
Hotel New Construction
Warehouse New Construction
Other Commercial New Constr...
Industrial Renovation
Hotel Renovation
Warehouse Renovation
Small Multi-Family Remodel ...
Whole Home Remodel
Large Multi-Family New Cons...
Attic Remodel
Single Room Remodel
Cosmetic Remodel
Large Multi-Family Remodel ...
Healthcare Facility New Con...
Healthcare Facility Renovation
Blackstone Development, Inc Contact Information
Phone Number: (925) 718-3126
Address: 1220 Oakland Blvd, Walnut Creek, CA 94596
Blackstone Development, Inc Walnut Creek
Quality
113
97th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Blackstone Development, Inc has a BuildZoom score of 113, which places them above 97% of 336,931 contractors in California.
Activity
|
4 projects
|
2025 |
|
1 project
|
2024 |
|
10 projects
|
2023 |
Our building permit records indicate that Blackstone Development, Inc has worked on at least
15.0 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
|
3 projects
|
$5k-$20k |
|
1 project
|
$50k-$100k |
|
8 projects
|
$100k-$250k |
|
1 project
|
$250k-$500k |
The typical size of their permits is approximately $127,324. This graph shows the distribution of these job values.
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 Blackstone Development, Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Removal of existing 24inch concrete v-ditch. excavation of soil adjacent to the foundation. remove existing foundation wall waterproofing. preparation of the concrete foundation wall and installation of new cim1000 trowel grade waterproofing and drainage mat. installation of new 4in perforated drainpipe 3/4in drain rock wrapped in filter fabric. backfill and compact soil to 95%. insta... see more
Valuation:
$199,661
Permit #:
B25-2854
Status:
plancheck
Fee:
$2,165
Permit Type:
N/A
Building Type:
N/A
Restore property damage caused by sub-grade water supply leak - disconnect and abandon existing sub-grade water supply and replace with above grade water supply piping at all existing water supply termination locations. remove and replace drywall at areas of re-pipe and 18 band at interior perimeter. raise floor at recessed living room w treated sleepers on grade conventional plywood ... see more
Valuation:
N/A
Permit #:
BISUB23-03097
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove 2 existing toilets and replace with new toilets remove 2 existing sinks and replace with new sinks (1 restroom 1 kitchenet). remove angle stops in master bathroom office bathroom and office kitchenet and replace with new copper stubouts and angle stops
Valuation:
N/A
Permit #:
PP20250618936
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Master bathroom and closet remodel. master bedroom remodel. new ductwork and new sheetrock in garage. (e) in-kind like for like
Valuation:
$218,254
Permit #:
202506168748
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Repair concrete slab install fluid applied waterproof membrane & cement topcoat per plan spec replace like for like as required to complete. remove and replace existing gas fireplace insert. all windows in living room to be tempered
Valuation:
$311,780
Permit #:
BIAL23-013000
Status:
final
Fee:
$6,497
Permit Type:
N/A
Building Type:
N/A
Remove existing romex wire and plugs in garage. office area and replacing with new romex wire and plugs/switches due to water damage. 4 lights 4 switches 8 receptacles 1 dish washer 1 garbage disposal 1 microwave 1 range
Valuation:
N/A
Permit #:
E202506183264
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Revision 202506168748- adding interior wall in the garage to create a storage closet new layout for living room kitchenette and bathroom on 1st floor
Valuation:
$12,000
Permit #:
202508112733
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
(master permit) deck railing repair to five single-family residence: remove deck metal guard rail. modify post base stanchions to align with structural framing. re-install railing
Valuation:
$127,324
Permit #:
BLD23-68920
Status:
final
Fee:
$6,528
Permit Type:
N/A
Building Type:
N/A
Remove window repair water damage to framing sheetrock stucco siding as needed. reinstall window replace lath stucco siding sheetrock paint. one window replace in kind material and operator visible
Valuation:
$24,616
Permit #:
202210053764
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Scope of work: install a new 110v receptacle for power at the new booster fan location. install new dryer exhaust ducting and fittings. install a new fantech exhaust fan with a 110v appliance cord. removing and replacing the dryer exhaust ducts. this includes replacing the existing booster fan located in a dropped ceiling opening and closing rated wall and ceiling. scope of work also ... see more
Valuation:
N/A
Permit #:
2021 020498 MF
Status:
final
Fee:
N/A
Permit Type:
Single dwelling unit
Building Type:
N/A
(rbc) - building residential combo alteration- 1 & 2 unit residential (building)
2021-12-12
Interior remodel of single family residence: ground floor re-locate laundry and create gym structural and foundation repairs; 1st floor: remodel 1/2 bath; rebuild interior stair and deck at first floor; second floor balcony repair per engineered plans and calcs
Valuation:
$460,000
Permit #:
RBC1905058
Status:
expired
Fee:
$16,112
Permit Type:
N/A
Building Type:
N/A
30 32 34 marinero and 93 95 97 lyford exterior improvments
Valuation:
$100,000
Permit #:
BC25-041
Status:
issued
Fee:
$3,631
Permit Type:
New construction
Building Type:
N/A
Remove window repair water damage to framing sheetrock stucco siding as needed. reinstall window replace lath stucco siding sheetrock paint. visible from street
Valuation:
$34,174
Permit #:
202210053761
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Scope of work: install a new 110v receptacle for power at the new booster fan location. install new dryer exhaust ducting and fittings. install a new fantech exhaust fan with a 110v appliance cord. removing and replacing the dryer exhaust ducts. this includes replacing the existing booster fan located in a dropped ceiling opening and closing rated wall and ceiling. scope of work also ... see more
Valuation:
N/A
Permit #:
2021 012619 MF
Status:
issued
Fee:
N/A
Permit Type:
Single dwelling unit
Building Type:
N/A
Deck railing repair - remove deck metal guard rail. modify post base stanchions to align with structural framing. re-install railing see bld23-68920 for stamp approved plans
Valuation:
$127,324
Permit #:
BLD23-70968
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Deck railing repair - remove deck metal guard rail. modify post base stanchions to align with structural framing. re-install railing
Valuation:
$127,324
Permit #:
BLD23-70967
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Deck railing repair - remove deck metal guard rail. modify post base stanchions to align with structural framing. re-install railing see bld23-68920 for stamp approved plans
Valuation:
$127,324
Permit #:
BLD23-70966
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Deck railing repair - remove deck metal guard rail. modify post base stanchions to align with structural framing. re-install railing
Valuation:
$127,324
Permit #:
BLD23-70964
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove and replace balcony sliding glass door (same) to repair water damage. replace stucco and sheetrock 51 sq ft
Valuation:
$14,476
Permit #:
BLDG-2022-01894
Status:
final
Fee:
$788
Permit Type:
N/A
Building Type:
N/A
Install siding glass doors install handrailing
Valuation:
$144,000
Permit #:
BLD21-0454
Status:
final
Fee:
$4,080
Permit Type:
Other
Building Type:
N/A
Blackstone Development, Inc Reviews
BuildZoom hasn't received any reviews for Blackstone Development, Inc. Click here to be alerted when reviews are posted about them.
Hiring a contractor?
Verified License
BuildZoom confirmed this contractor's license
Blackstone Development, Inc License info
Verified License
| License # | NAT-F236651-1 |
| Status | Active |
| Nation | Environmental Protection Agency |
| Type | Renovation |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Blackstone Development, Inc at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 1022662 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Blackstone Development, Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 992661 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Blackstone Development, Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
113
BuildZoom Score
Bonded
| Bonded Agent | Hudson Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Falls Lake Fire & Casualty Company |
31
Permits
- Building permit records show that Blackstone Development, Inc has worked on 31 permitted projects.
Blackstone Development, Inc Employees
DT
David Joseph Tognela
Officer
MN
Michael Lars Nilsson
Owner
TH
Thomas Doyle Hastings
Rmo / Ceo / Pres