Updated: May 08, 2026
Location and Projects
Address
1733 Royal Ave, San Mateo, CA, 94401
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Elio Construction
Elio Construction, 1733 Royal Ave, San Mateo, CA (Employee: Elio Gregorio Marroquin Flores) holds a General Building license according to the California license board.
Their BuildZoom score of 110 ranks in the top 4% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Elio Construction, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Elio Construction Services
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Elio Construction Contact Information
Phone Number: (415) 517-0963
Address: 1733 Royal Ave, San Mateo, CA 94401
Elio Construction San Mateo
Quality
110
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Elio Construction has a BuildZoom score of 110, which places them above 96% of 336,931 contractors in California.
Activity
|
10 projects
|
2025 |
|
13 projects
|
2024 |
|
8 projects
|
2023 |
Our building permit records indicate that Elio Construction has worked on at least
31.0 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
|
16 projects
|
Home Additions |
|
7 projects
|
Kitchen remodels |
|
5 projects
|
Multi-room remodels |
Analyzing permits over the last 4 years shows that Elio Construction mostly works on
home addition
and kitchen remodel
projects.
Pricing
|
1 project
|
< $5k |
|
6 projects
|
$5k-$20k |
|
2 projects
|
$20k-$50k |
|
3 projects
|
$50k-$100k |
|
4 projects
|
$100k-$250k |
|
1 project
|
$250k-$500k |
|
1 project
|
$500k-$1mil |
The typical size of their permits is approximately $30,000. 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.
Single family dwelling addition of 379sf to create a master suite. remodel of 544sf swap location of kitchen and dining room. remodel hallway bathroom and convert bedroom 3 into an office walk-in closet and hallway leading into master suite. new deck at rear of house of 110sf and installation of ev charger
Valuation:
$272,169
Permit #:
BD-2023-290641
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Unit#: 1215; in-kind work for bathroom. in-kind work for kitchen w/new installation of ventless electric stacked. washer/dryers. replace all carpet in/lvp. no structural work upgrade existing electrical switches and recepticals
Valuation:
$65,000
Permit #:
202501087927
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
1st floor addition radiant heat at entrance and living room (101sf) kitchen (43sf) dining room (43sf) total radiant heat 187sf. entrance and living room - schluter dehk120102 slno: 001660704 c kitchen - schluter dehk12043 slno: 00172847 c dining room - schluter dehk12043 slno: 59067 d
Valuation:
N/A
Permit #:
BLD2024-02974
Status:
final
Fee:
$333
Permit Type:
N/A
Building Type:
N/A
Upgrade (e) electrical switches and receptacles in kitchen bathroom and living room. addition stackable washer/dryer in kitchen. 6 lights 3 switches 6 receptacles 2 fans 1 dishwasher 1 range
Valuation:
N/A
Permit #:
E202501089230
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential new single family multi family manufactured detached adu
2023-10-26
**update address in record** new one-story 1 176 sf single family residence (2 bed 1.5 bath) 71 sf front porch. all new utilities. lot is the result of an sb-9 lot split keeping the existing house. addressing-new apns: parcel 1: 027-083-100 parcel 2: 027-083-110 parcel 1 will retain the old address 2935 hillside drive. parcel 2 (this permit) address to be 102 los robles drive. approve... see more
Valuation:
N/A
Permit #:
BLD2023-02870
Status:
issued
Fee:
$14,370
Permit Type:
N/A
Building Type:
N/A
Remodel (e) master bathroom remove hall closet to addition (n) bathroom addition (n) hall closet for washer/dryer at 75 sf. addition (n) can lighting to (2) bathrooms and (2) bedrooms
Valuation:
$18,390
Permit #:
BD-2024-292374
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Single family (alteration/repair) - window new/replace
2024-01-04
(1) replacing nine windows all retrofit in kind (same size same location with no alterations to window openings); and (2) replacing two doors (rear exterior entry and rear sliding door) all retrofit in kind (same size same location with no alterations to door openings)
Valuation:
$30,000
Permit #:
BD-2023-290325
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove (e) gas furnace from mechanical room. install air handler in same location. install (n) heat pump outside of house on east side. and air handler located at attic. approx 400 ft new ducting
Valuation:
$30,000
Permit #:
MEP-2025-296842
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential addition alteration to existing residence
2024-07-22
This is a residential interior remodel (328 sf ) for a kitchen bathroom & laundry room/bath. new wall added. no added floor area replace windows and doors new hvac ceiling fans and other appliances resub#1 - sge- 03/28/2023- response to building pln
Valuation:
N/A
Permit #:
BLD2022-02943
Status:
final
Fee:
$4,176
Permit Type:
N/A
Building Type:
N/A
Unit's 4 and 6: deck repair (leaks) remove existing waterproofing torch dow: replace sub floor plywood and dry rot if app. install new torch down deck 12x5 each deck. repair in kind less than 50%
Valuation:
$6,000
Permit #:
202304266506
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
• delete paved stone garden path and guardrail system between upper level balcony and lower level deck • delete retaining wall rock garden • delete stone garden path over slab on grade at lower level • delete decomposed granite surface at lower level • regrade existing sloped hillside between upper and lower levels provide new landscape rock garden retaining wall and stone paver patio... see more
Valuation:
N/A
Permit #:
REV2022-00186-001
Status:
issued
Fee:
$261
Permit Type:
N/A
Building Type:
N/A
Residential addition alteration to existing residence
2024-01-24
Expand the living and dining rooms covert an office into a bedroom and reconfigure for the addition of a bedroom bathroom and walk-in closet. no changes are proposed to the existing 2nd floor ***requires separate fire sprinkler permit*** associated demolish permit bld2024-00898 issued 7/31/24 resub #1 - jxb - 2/26 - response to building plan civil geo
Valuation:
N/A
Permit #:
BLD2024-00167
Status:
issued
Fee:
$14,423
Permit Type:
N/A
Building Type:
N/A
New 2647 sf single family residence & 798 sf adu
Valuation:
$799,240
Permit #:
BLD2023-00567
Status:
issued
Fee:
$34,001
Permit Type:
New single family...
Building Type:
N/A
Addition of new basement
Valuation:
$244,296
Permit #:
BLD2024-00272
Status:
issued
Fee:
$17,437
Permit Type:
N/A
Building Type:
N/A
Addition (363sf) and remodel to addition new bedroom bathroom
Valuation:
$102,600
Permit #:
B25-0919
Status:
issued
Fee:
$10,150
Permit Type:
Addition
Building Type:
N/A
Unit 1215: in kind work in kitchen and bathroom with one shower pan
Valuation:
N/A
Permit #:
PP20250108882
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Sfr- rear deck -(mid -upper & lower ): *removal and replacement of an 882 sf rear deck (mid deck-upper deck and lower level deck) with all new stairs and landings; new electrical outlets and switches
Valuation:
$66,114
Permit #:
BD-2022-285431
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
2nd story addition for 798sf adu
Valuation:
N/A
Permit #:
B2023-0378
Status:
issued
Fee:
$31,490
Permit Type:
Attached adu
Building Type:
N/A
Replace 24 windows in living room (like for like). no additional construction necessary
Valuation:
N/A
Permit #:
BLD2024-02899
Status:
final
Fee:
$622
Permit Type:
N/A
Building Type:
N/A
Replace existing electrical panel with new electrical 200 amp panel. this work will be in conjunction with permit #bld2022-02943
Valuation:
N/A
Permit #:
BLD2024-00125
Status:
final
Fee:
$239
Permit Type:
N/A
Building Type:
N/A
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Verified License
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Elio Construction License info
Verified License
| License # | 1023899 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Elio Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
110
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Everest National Insurance Company |
36
Permits
- Building permit records show that Elio Construction has worked on 36 permitted projects.
Elio Construction Employees
EF
Elio Gregorio Marroquin Flores
Sole Owner