Permits are pulled before work begins and then
inspected by the county. A contractor who files them is working
inside a system with an inspector in it, which is what unpermitted
work avoids.
What the permits show
Of the permits we observed, 44% are plumbing work.
Plumbing
8
Electrical
5
HVAC
4
Fire Protection
1
Licensed as
Maryland HVACR Contractor, Licensed Electrician, Maryland State Electrician, Master Plumber and Gas Fitter
Observed working in
Ellicott City, Columbia, New Market and 1 more
Observed filing in
3 counties
License numbers
05010096615, 000270, ES 10972, 000640, 112876
Each county's permit system holds only their own records, so the
combined view above exists nowhere else.
Recent work
-
HVAC replacement
August 2026 · Howard County
Xiaobo Yao / Replace an Rtu
-
Roof replacement
August 2026 · Howard County
Replace a roof top unit
-
Interior work
July 2026 · Howard County
add one exhaust fan for the new bathroom
-
Basement finishing
June 2026 · Howard County
Electric work for basement renovation/ install 21 outlet, 27 light, 15 switches
-
Gas water heater replacement
120,000 BTU
June 2026 · Anne Arundel County
add some gas equipment for restaurant (1 griddle-120000btu, 2 fryers- 240000btu, 1 water heater- 200,000btu, rtu 1- 115…
-
Fire protection upgrade
May 2026 · Anne Arundel County
Modify fire alarm for new tenant
-
Electrical work
February 2026 · Anne Arundel County
Interior altertions
-
Kitchen renovation
September 2025 · Howard County
SUITE D/ PHO LIVE RESTAURANT/ NEW EQUIPMENT UNDER HOOD AND INSTALL NEW PLUMBING FIXTURES- in the kitchen, 5 stock pot r…
-
Gas water heater replacement
July 2024 · Howard County
SUITE101 & 103/YE'S SEAFOOD HOUSE/ MODIFY GAS PIPE FOR NEW EQUIPMENT UNDER HOOD AND INSTALL NEW PLUMBING FIXTURES - Bac…
Licensing
-
Maryland HVACR Contractor
Issued by Maryland Board of Heating, Ventilation, Air Conditioning and Refrigeration.
Verify
-
Licensed Electrician
Issued by Maryland Board of Master Electricians.
Verify
-
Maryland State Electrician
Issued by Maryland Board of Master Electricians.
Verify
-
Master Plumber and Gas Fitter
Issued by Maryland Board of Plumbing.
Verify
Towns we observed them working in
Ellicott CityColumbiaNew MarketClarksville
We hold permit records for Anne Arundel County, Baltimore City, Baltimore County, Carroll County, Frederick County, Howard County, Prince George's County, and Washington DC.
Work anywhere else is not missing from this contractor's record, it
is outside what we cover.
Permits by year
2023
1
2024
4
2025
4
2026
9
Our records for this
contractor's counties begin August 2021. Years
before that are not shown because we hold nothing for them, not
because nothing happened.
What this page is, and is not
- Howard County: 12 permits observed, from records beginning August 2021.
- Anne Arundel County: 3 permits observed, from records beginning December 2025.
- Frederick County: 3 permits observed, from records beginning August 2021.
This page shows permits we observed in county records.
Our observation is not complete: work done before those dates, in
counties we do not cover, or on filings that name no contractor does
not appear here. A contractor's real work is almost always
greater than what we observed, and absence of a permit on this page
does not mean the work was not done or not permitted.
We currently hold records for
Anne Arundel County, Baltimore City, Baltimore County, Carroll County, Frederick County, Howard County, Prince George's County, and Washington DC; see permit
coverage for what that includes.
Common questions
- Does a permit record mean this contractor is licensed?
- County permit records list YAQI CONSTRUCTION LLC under
Maryland HVACR Contractor, Licensed Electrician, Maryland State Electrician, Master Plumber and Gas Fitter.
Check current standing with the issuing body before hiring.
- Why do some contractors show more permits than others?
- Counties began publishing at different times and describe
contractors differently, so the number reflects what we observed
as much as what the contractor did. It is not a ranking.
- What should I still ask for?
- Proof of insurance, a written contract, and the license number
for the trade being performed. A permit record is a starting
point, not a substitute for either.
Other Plumbing contractors in Howard County