Updated: Mar 27, 2026
Location and Projects
Address
P O BOX 2092, Alpine, CA, 91903
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SILVERTHORN CONSTRUCTION INC
SILVERTHORN CONSTRUCTION INC, Alpine, Po Box 2092, Alpine, CA (Employees: Donnie Lynn Wallace Jr, Stacy L Wallace, and Stephen Paul Silverthorn) holds a General Building license according to the California license board.
Their BuildZoom score of 98 ranks in the top 16% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring SILVERTHORN CONSTRUCTION INC, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
SILVERTHORN CONSTRUCTION INC Services
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SILVERTHORN CONSTRUCTION INC Contact Information
Phone Number: (619) 980-8958
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Address: P O BOX 2092, Alpine, CA 91903
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SILVERTHORN CONSTRUCTION INC Alpine
Quality
98
84th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
SILVERTHORN CONSTRUCTION INC has a BuildZoom score of 98, which places them above 84% of 336,931 contractors in California.
Activity
|
1 project
|
2023 |
Our building permit records indicate that SILVERTHORN CONSTRUCTION INC has worked on at least
1.0 project 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 |
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 SILVERTHORN CONSTRUCTION INC
This is a sample of this contractor's permits. Click here to access their complete permit history.
Digital - pacific beach: combination building permit for a new addition and remodel and a new companion unit. work to include: new companion unit above (e) garage addition to the garage new deck and all associated meps. base zone: rm-1-1 coastal: n-app-2 transit priority areas geo haz: 52
Valuation:
$65,050
Permit #:
2445313
Status:
complete
Fee:
$2,311
Permit Type:
Add/alt companion...
Building Type:
N/A
New residential detached accessory structure - plan check-permit
2023-07-14
Cross street: arnold description of work: 28 lf county standard ret wall (max height 5'; sloping backfill) for proposed adu (separate permit) (adu record id pds2020-resacc-000131)
Valuation:
$5,180
Permit #:
PDS2020-RESACC-000468
Status:
complete
Fee:
$564
Permit Type:
N/A
Building Type:
N/A
La jolla: building electrical and mechanical permit to addition interior partitions and relocate electrical lines for an existing hair salon. no plumibng work. ljpd3 cdp# 44784, sdp#44785 geo haz cat: 52
Valuation:
N/A
Permit #:
1067927
Status:
complete
Fee:
$1,655
Permit Type:
Add/alt tenant im...
Building Type:
N/A
Residential alteration or addition - plan check-permit
2015-01-30
Cross street: live oak park road description of work: single family residence addition/remodel - removing part of existing 2nd story and rebuilding that part plus 160 sq. ft. of new addition to 2nd story - 192 sq. ft. addition to garage and 800 sq. ft. new deck 11-29-16: packet purged. cdc
Valuation:
$53,154
Permit #:
PDS2015-RESALT-000811
Status:
triage
Fee:
$1,626
Permit Type:
N/A
Building Type:
N/A
New residential detached accessory structure - plan check-permit
2012-03-26
Cross street: rocky mountain rd foundation: slab description of work: 440 sq ft ag building 320 sq ft poolhouse 80 sq ft sauna all as built. (there is also a 300 sq ft gazebo and dog kennel which don't require permits due to their size. (the kennel is just a patio cover with a 5 high chain link fence around it)
Valuation:
$59,352
Permit #:
PDS2012-1006-20120057
Status:
complete
Fee:
$2,011
Permit Type:
N/A
Building Type:
N/A
Residential alteration or addition - plan check-permit
2011-09-27
Cross street: willows description of work: single family dwelling demolition permit -- note: _ it may not be possible to rebuild. _ the fact that there was an existing structure on your lot does not guarantee that you will be able to replace it if it is demolished. existence of a structure does not grandfather its use if it is removed. please see the zoning counter at the kearny mesa ... see more
Valuation:
N/A
Permit #:
PDS2011-1005-20110485
Status:
complete
Fee:
$121
Permit Type:
N/A
Building Type:
N/A
Residential alteration or addition - plan check-permit
2014-09-26
Cross street: willowside rd description of work: single family dwelling demolition permit -- note: _ it may not be possible to rebuild. _ the fact that there was an existing structure on your lot does not guarantee that you will be able to replace it if it is demolished. existence of a structure does not grandfather its use if it is removed. please see the zoning counter at the kearny... see more
Valuation:
N/A
Permit #:
PDS2011-1005-20110484
Status:
complete
Fee:
$121
Permit Type:
N/A
Building Type:
N/A
Residential alteration or addition - plan check-permit
2010-12-08
Cross street: lyons valley rd description of work: roof mount residential solar photovoltaic for existing single family dwelling to be place on new det. garage (see 1006 20100239) no. of modules: 66 no. of inverters: 3 total system size in kilowatts: 15.3 per section 4620 (i) of the zoning ordinance roof mounted photovoltaic systems shall not extend more than 5 above the highest point... see more
Valuation:
N/A
Permit #:
PDS2010-1031-20100945
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New residential detached accessory structure - plan check-permit
2010-12-08
Cross street: lyons valley rd foundation: slab description of work: 1730 sf detached garage fin/fs; also electrical upgrade to 400 amps service for single family dwelling. and 80 sqft adding windows and door to garage 4/1/11: plan change -- change upgrade from 200 to 400 amps service for sfd...vmt 02.15.2011: plan change structual only see condition of approval...lhg 01.21.2011: plan ... see more
Valuation:
$63,015
Permit #:
PDS2010-1006-20100239
Status:
complete
Fee:
$1,986
Permit Type:
N/A
Building Type:
N/A
New residential detached accessory structure - plan check-permit
2010-09-30
Cross street: rocky mountain rd foundation: slab description of work: 440 sq ft ag building 320 sq ft poolhouse 80 sq ft sauna all as built. (there is also a 300 sq ft gazebo and dog kennel which don't require permits due to their size. (the kennel is just a patio cover with a 5 high chain link fence around it) 02.28.2012:plan change see conditions of approval...lhg 10/12/11: one-time... see more
Valuation:
$59,352
Permit #:
PDS2010-1001-20100550
Status:
complete
Fee:
$2,620
Permit Type:
N/A
Building Type:
N/A
Mira mesa . il-2-1 . building permit for tenant improvement to existing manufacturing site. the scope of work is to increase the height of existing opening in concrete til-up panel from 10ft. high to 17'6 high door (door #4). removing existing metal door and infill with metal stud. remove and replace existing slab to create a pit area and a new concrete pedestal for a new equipment. n... see more
Valuation:
$11,462
Permit #:
561865
Status:
complete
Fee:
$1,777
Permit Type:
Add/alt tenant im...
Building Type:
N/A
Residential alteration or addition - plan check-permit
2008-07-08
Cross street: royal rd. description of work: 550 sqft patio cover 300 sqft county standard retaining wall (max height 5') 124 sqft (max height 6') county standard free standing entry wall misc. electrical. & plumbing for outoodr bbq fire-pit & lighting. 7/14/2008: plan change - see conditions of approval - 1ded
Valuation:
$13,602
Permit #:
PDS2008-1005-20080464
Status:
complete
Fee:
$1,211
Permit Type:
N/A
Building Type:
N/A
New primary residential structure single family dwelling or mh - plan check-permit
2005-02-18
Cross street:muth vly rd description of work: ~cedar fire streamline~ 2715 sq ft single family dwelling w both and 747 sq ft det fin garage and 600 sq ft uncovd deck...200 amps electrical service...vg2073...etop 1005-2003-1662. original 1700 sq ft per cedar fire damage report and 504 sq ft garage...dah notice to permittee: temp power shall be inspected prior to framing inspection vg2073
Valuation:
$268,220
Permit #:
PDS2005-1003-20050159
Status:
complete
Fee:
$646
Permit Type:
N/A
Building Type:
N/A
Residential alteration or addition - plan check-permit
2005-08-30
Cross street:jack oak lane description of work:499 sq ft 1-story single family dwelling addition 52 sq ft covered porch (hra) misc electrical plumbing & mechanical. new addition is not to be used as a separate unit per zoning. 10-13-05 plan change adding 10 sq ft of outside water heater cabinet. also changing portion of new roof so not to block existing window. vam (correction list gi... see more
Valuation:
$50,659
Permit #:
PDS2005-1004-20050629
Status:
complete
Fee:
$756
Permit Type:
N/A
Building Type:
N/A
New primary residential structure single family dwelling or mh - plan check-permit
2004-05-20
Cross street: hwy 67 description of work: 750 sq ft 2nd dwelling living quarters 195 sq ft retaining wall with sloping fill to county standards. note: on 8/17/04 applicant submitted the following plan change: convert second dwelling to guesthouse by reducing size of structure by 125 sq. ft. thereby reducing kitchen to wetbar.-ded
Valuation:
$56,911
Permit #:
PDS2004-1001-20041406
Status:
complete
Fee:
$952
Permit Type:
N/A
Building Type:
N/A
New primary residential structure single family dwelling or mh - plan check-permit
2004-05-13
Cross street:olde hwy 80 description of work: cedar fire burnout but new owner (per ryan at e.c. recorder's office over phone 5/18/04 deed of new ownership to the nottinghams was recorded 4/30/04 (copy in file). therefor no credit is due. manufactured home w f.s. and air conditioning 2077 sq. ft attached unfinished garage 864 sq. ft patio cover 130 sq. ft. permit includes: 200 amp ele... see more
Valuation:
$65,724
Permit #:
PDS2004-1001-20041340
Status:
complete
Fee:
$258
Permit Type:
N/A
Building Type:
N/A
New primary commercial structure - plan check-permit
2004-05-13
Cross street: pine hills rd. description of work: **cedar fire streamline** 1686 sqft meeting room & rec. room building w/fs for lakeside presbyterian retreat. misc. electrical plumbing. & mechanical. original was 1200 sqft. increase of 486 sqft. 7/19/04 - sq fts change - see coa text detail 2 for original scope...amc vg-2073
Valuation:
$113,030
Permit #:
PDS2004-1017-20040114
Status:
complete
Fee:
$119
Permit Type:
N/A
Building Type:
N/A
New primary commercial structure - plan check-permit
2004-07-20
Cross street: pine hills rd. description of work: **cedar fire streamline** 1686 sqft meeting room & rec. room building w/fs for lakeside presbyterian retreat. misc. electrical plumbing. & mechanical. original was 1200 sqft. increase of 486 sqft. 7/19/04 - sq fts change - see coa text detail 2 for original scope...amc vg-2073
Valuation:
$113,030
Permit #:
PDS2004-1019-20040126
Status:
complete
Fee:
$250
Permit Type:
N/A
Building Type:
N/A
New primary residential structure single family dwelling or mh - plan check-permit
2004-08-18
Cross street: hwy 67 description of work: 750 sq ft 2nd dwelling living quarters 195 sq ft retaining wall with sloping fill to county standards. note: on 8/17/04 applicant submitted the following plan change: convert second dwelling to guesthouse by reducing size of structure by 125 sq. ft. thereby reducing kitchen to wetbar.-ded plan change...10/8/04...retaining wall changed to 10 ma... see more
Valuation:
$56,911
Permit #:
PDS2004-1003-20041068
Status:
complete
Fee:
$1,754
Permit Type:
N/A
Building Type:
N/A
New primary residential structure single family dwelling or mh - plan check-permit
2004-08-12
Cross street:olde hwy 80 description of work: cedar fire but new ownership (per ryan at e.c. recorder's office over phone 5/18/04 deed of new ownership to the nottinghams was recorded 4/30/04 (copy in file). therefor no credit is due. 2077 sqft m/h w fs and air conditioning w 864 sqft attach unfin garage and 130 sqft patio cover 200 amps and temp power 8/12/04---scope was changed orig... see more
Valuation:
$65,724
Permit #:
PDS2004-1033-20040259
Status:
complete
Fee:
$2,611
Permit Type:
N/A
Building Type:
N/A
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SILVERTHORN CONSTRUCTION INC License info
Verified License
| License # | 339580 |
| 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 SILVERTHORN CONSTRUCTION INC at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
98
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
35
Permits
- Building permit records show that SILVERTHORN CONSTRUCTION INC has worked on 35 permitted projects.
SILVERTHORN CONSTRUCTION INC Employees
DJ
Donnie Lynn Wallace Jr
Officer
SW
Stacy L Wallace
Officer
SS
Stephen Paul Silverthorn
Rmo / Ceo / Pres
SS
Steven Gregory Silverthorn
Officer