Updated: May 29, 2026
Location and Projects
Address
9301 DARBY AVE APT 1, Northridge, CA, 91325
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Mroczka, Peter J Construction
Serving Northridge and the greater Los Angeles area, Peter J. Mroczka specializes in residential construction and remodeling projects. With 36 years of experience, Mroczka has managed a wide range of work, including home renovations, room additions, and property improvements. His portfolio demonstrates capability in handling both interior and exterior upgrades for single-family homes. Projects include kitchen and bathroom remodels, structural repairs, and the update of existing living spaces to meet contemporary standards. Mroczka works directly with homeowners throughout Los Angeles, addressing both aesthetic and functional goals. His longstanding presence in the San Fernando Valley reflects a consistent focus on building and refurbishing residential properties to align with client specifications.
Mroczka, Peter J Services
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Mroczka, Peter J Contact Information
Phone Number: (310) 472-2490
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Address: 9301 DARBY AVE APT 1, Northridge, CA 91325
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Mroczka, Peter J Northridge
Quality
109
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Mroczka, Peter J has a BuildZoom score of 109, which places them above 95% of 336,931 contractors in California.
Activity
|
115 projects
|
2025 |
|
80 projects
|
2024 |
|
57 projects
|
2023 |
Our building permit records indicate that Mroczka, Peter J has worked on at least
252.0 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.
Experience
|
93 projects
|
New Constructions |
|
68 projects
|
Home Additions |
|
3 projects
|
Commercial Renovations |
|
16 projects
|
Multi-room remodels |
|
7 projects
|
Kitchen remodels |
Analyzing permits over the last 4 years shows that Mroczka, Peter J mostly works on
new construction
and home addition
projects.
Pricing
|
62 projects
|
< $5k |
|
27 projects
|
$5k-$20k |
|
38 projects
|
$20k-$50k |
|
26 projects
|
$50k-$100k |
|
54 projects
|
$100k-$250k |
|
34 projects
|
$250k-$500k |
|
14 projects
|
$500k-$1mil |
|
14 projects
|
$1mil+ |
The typical size of their permits is approximately $50,000. 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.
This is a sample of this contractor's permits. Click here to access their complete permit history.
**hsap for review of fls green accessibility and structural (sb330)** supplemental to 24010-10000-01413** new 5-story approximate 58-ft in height approximate 11 921 sf apartment building containing 13-units including 2 vli units (15%) providing 8 vehicle parking spaces and 15 bicycle parking spaces. 4 stories of type va construction over 1 story of type 1 construction of a garage at g... see more
Valuation:
$4,000,000
Permit #:
24010-10001-01413
Status:
triage
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Propose three story duplex w open roof deck and attach garage_ building shall be fully sprinkler through out with nfpa 13d. *soils report and approval letter required for 3 story or more (liquefaction area)
Valuation:
$500,000
Permit #:
25010-20000-01362
Status:
triage
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
(parcel b) propose two story two units single family dwelling with attached 4 car-carport per sb9 two-unit development and urban lot split ca govt code 68582.21 and 66411.7 _ building shall be fully sprinkler through out with nfpa 13d. *adus and jadus are not permitted on parcels that use both the urban lot split and two-unit development either together or at different times
Valuation:
$135,000
Permit #:
25010-20000-00404
Status:
triage
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
(parcel b) propose two story two detached accessory dwelling units with attached 4 car-carport _ per sb9 two-unit development and urban lot split ca govt code 68582.21 and 66411.7 _ building shall be fully sprinkler through out with nfpa 13d. adus are not allowed. *adus and jadus are not permitted on parcels that use both the urban lot split and two-unit development either together or... see more
Valuation:
$135,000
Permit #:
25010-20000-00405
Status:
triage
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
(parcel a) propose two story two units single family dwelling with attached 4 car-carport _ per sb9 two-unit development and urban lot split ca govt code 68582.21 and 66411.7 _ building shall be fully sprinkler through out with nfpa 13d. *adus and jadus are not permitted on parcels that use both the urban lot split and two-unit development either together or at different times
Valuation:
$135,000
Permit #:
25010-20000-00402
Status:
triage
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
(parcel a) propose two story two detached accessory dwelling units with attached 4 car-carport _ per sb9 two-unit development and urban lot split ca govt code 68582.21 and 66411.7 _ building shall be fully sprinkler through out with nfpa 13d. this building is not allowed. *adus and jadus are not permitted on parcels that use both the urban lot split and two-unit development either tog... see more
Valuation:
$135,000
Permit #:
25010-20000-00403
Status:
triage
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New irregular shaped two stories 37 9 x 49 singla family dwelling per sb9 two-unit development ca govt code 65852.21 and adu per gc 66323(a)(1) with attached garage. nfa 13d sprinkler required. all work done per engineer
Valuation:
$260,000
Permit #:
24010-20000-04565
Status:
applied
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
100% hsap to check for fls green das and structural - sb330 ed1 new 6 story 49 units 100% affordable housing apartment construction of a new 23 145 sf. (3.22 far) six-story 68-foot seven-inch 100% affordable housing development with 24 studio units and 25 one-bedroom dwelling units including 39 low income units nine moderate income units and one managers unit as well as seven automobi... see more
Valuation:
$6,000,000
Permit #:
24010-10001-02358
Status:
applied
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
New 3 story duplex with attached garage and recreation room (front) see comments
Valuation:
$763,000
Permit #:
21010-10000-02993
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New 2 story duplex per sb9 two unit development with two attached 2 car garages. to be fully sprinklered nfpa 13d
Valuation:
$425,000
Permit #:
25010-10000-00193
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Addition of (n) front porch and interior remodel to (e) single family dwelling which includes converting (e) rumpus room to enlarge (e) bedrooms. work per engr. comply with department order effective date 07/27/2023. permit will expire 30 days from issuance date
Valuation:
$24,500
Permit #:
25014-20000-00019
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Convert attached garage to junior accessory dwelling unit per gcs 65852.2(e)(1)(a) and 65852.22. construction design per engr. comply with department order effective date 10/02/2024. permit will expire 30 days from issuance date
Valuation:
$40,000
Permit #:
25016-20000-01011
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New 81'2 x 32 three story 5 unit apartment with attached (1) accessory dwelling unit as per lamc 12.22.a.33 (c) and (e) (type v a ) with 1 car garage attached at 1st floor nfpa-13r fire sprinklers throughout all work per engineering
Valuation:
$1,037,000
Permit #:
21010-20000-03705
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
***void***
Valuation:
$350,000
Permit #:
24010-20000-03851
Status:
approved
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New 2-story duplex (6298 sqft) w/attached 2-car garage (483 sqft) and habitable basement (4780 sqft) per sb9 2-unit development w/nfpa 13d sprinklers throughout. all electric building
Valuation:
$1,200,000
Permit #:
24010-20000-03849
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Convert detached garage and addition to new two stories 31 6 x 22 adu per lamc 12.22 a.33 (c)-(e) and single family dwelling per sb9 two-unit development ca govt code 65852.21. nfpa 13d sprinkler required. all work done per engineer
Valuation:
$120,000
Permit #:
24014-20000-04833
Status:
complete
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Eplan: replacing stairs and guardrails (same location) in exisitng 2 story apartment with office building comply with department order effective date 01/27/2025. permit will expire 30 days from issuance date. ceis case number is 1034802
Valuation:
$18,000
Permit #:
25016-10000-23994
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
New 2 story building 1 adu per floor. to be fully sprinklered nfpa 13d
Valuation:
$245,000
Permit #:
25010-10000-00202
Status:
triage
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New 2-story (35'-6"x42'-3") 1997 sqft single family dwelling w/rooftop deck above and attached 2-car garage (365 sqft) w/nfpa 13d sprinklers throughout. all electric building
Valuation:
$250,000
Permit #:
24010-20000-00800
Status:
triage
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental permit to 18014-20000-01061. to remove windows and posts at rear and replace with slider door. to addition a wall to enlarge the bathroom and relocate door for bedroom. to infill door at kitchen. to addition pads for new beam
Valuation:
$3,000
Permit #:
18014-20003-01061
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
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Mroczka, Peter J License info
Verified License
| License # | CAC42648 |
| Status | Active |
| State | California |
- BuildZoom has not verified this license since June, 2015.
Verify this license's status for Mroczka, Peter J at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 519290 |
| Status | Inactive |
| State | California |
| Type | General Building |
- According to the California Contractors State License 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 Mroczka, Peter J at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
109
BuildZoom Score
Bonded
| Bonded Agent | This License Filed A Contractor's Bond With |
| Bond Value | $5,000 |
784
Permits
- Building permit records show that Mroczka, Peter J has worked on 784 permitted projects.
Mroczka, Peter J Employees
PM
Peter Jan Mroczka
Sole Owner