Updated: Jul 14, 2026
Location and Projects
Address
Herndon, VA, 20171
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H&d Mechanical LLC
H&d Mechanical LLC, holds a Plumbing (Plb), Gas Fitting (Gfc), Heating Ventilation And Air Conditioning (Hva) license and 1 other license according to the Virginia license board.
Their BuildZoom score of 95 ranks in the top 22% of 131,387 Virginia licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring H&d Mechanical LLC, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
H&d Mechanical LLC Contact Information
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H&d Mechanical LLC
Quality
95
78th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
H&d Mechanical LLC has a BuildZoom score of 95, which places them above 78% of 131,387 contractors in Virginia.
Activity
|
1 project
|
2024 |
Our building permit records indicate that H&d Mechanical LLC has worked on at least
1.0 project over the past 2 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
|
$20k-$50k |
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.
Mechanical work associated with the alterations for petmedic vet clinic. work to include: bldc2023-00253 (1) energy recovery ventilator (5) fan coil units (1) air cooled heat pump (1) electric cabinet unit heater (3) fans (1) branch selector misc ductwork refrigerant piping condensate piping
Valuation:
$35,000
Permit #:
MEC2023-00814
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Reviewed under bldc2023-00253. plumbing work associated with alterations for petmedic vet clinic. work to include: (2) water closets (8) sinks (3) eyewash stations (2) solid interceptors (2)washing machine drain boxes (1)drinking fountain (1) refrigerator supply box (1) gas fired water heater (1) expansion tank (1) circulating pump (4) thermostatic mixing valves (4) balance valves (3)... see more
Valuation:
$30,000
Permit #:
PLM2023-01010
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Heating equipment 1 @ 120 mbh cooling equipment 2 @ 7 tons ductwork piping install hvac in new tenant was-32 to include 2 air conditioning units 1 air handler 1 duct heater, 13 vav boxes 3 exhaust fans duct and piping
Valuation:
$30,000
Permit #:
M2101536
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
1 backflow 6 water closet 3 lavs 8 water pipes 2 sinks 1 drinking fountain 1 water heater 1 floor sink 3 floor drain 1 service sink 2 water filters 1 circulating pump b2102241 floor g unit g-1
Valuation:
$17,000
Permit #:
P2103402
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
12 backflow prevention 6 tubs/shower 2 water closet 2 lavatory 2 sinks, 3 water pipes 1 grease receptor 2 water heters 6 floor sinks 5 floor drain, (1 water circulation pump 2 insta-hots 2 disposals 12 water filters) interior alterations at 2100 crystal dr g1 g2 mezz & floors 1-11. interior alterations at 2200 crystal 1st & 2nd floor. approved admin change for food service - zadm200117
Valuation:
$40,000
Permit #:
P2003188
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Heating eq: 1 - 24 mbh; cooling eq: 2 - 2 tons; ductwork ** install hvac in new tenant interior alterations at 2100 crystal dr g1 g2 mezz & floors 1-11. interior alterations at 2200 crystal 1st & 2nd floor. approved admin change for food service - zadm200117
Valuation:
$6,500
Permit #:
M2001446
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Heating equip: 1 - 45 mbh 1 - 45 mbh 1 - 52mbh ; cooling equip: 1 - 3 tons 1 -3 tons 1- 4 tons ; piping and duct work 3 condensate pumps 6 vav boxes 2nd 3rd and 4th floor
Valuation:
$50,000
Permit #:
M2101350
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
15 backflow preventers 3 sinks 3 dishwashers 3 water heaters 3 garbage disposals 3 water hammer arrestors 1 water filters 3 waterpipes
Valuation:
$21,000
Permit #:
P2102995
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
5 backflows 1 sink 1 dishwasher 1 ice maker 1 water pipe 1 water heater unit 700 on 7th fl b2102003 also on permit: 1 garbage disposal
Valuation:
$7,500
Permit #:
P2102708
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
3 cooling equip - 8 notons 3 cooling equip - 2 1/2 tons 3 cooling equip - 2 tons 1 expanstion tan - 24 gallons piping equip duct work interior aleration to floors 9, 10 and 11 for **cooper 241**
Valuation:
$56,000
Permit #:
M1900728
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
1 lavatory 1 open site drain 4 sink 1 water closet 5 water heater 1 water pipe 4 water filters 5 condensate pumps interior aleration to floors 9, 10 and 11 for **cooper 241* contact - william 202-330-9658
Valuation:
$22,000
Permit #:
P1901739
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install hvac in new tenant to include 9 vavs ductwork and diffusers ** 7th floor unit 700**
Valuation:
$7,500
Permit #:
M2101205
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building Permit
4604 West Ox Rd, Fairfax, VA
2021-03-31
Install plumbing in new tenant
Valuation:
$60,000
Permit #:
210900141
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Public service us...
Building Permit
4604 West Ox Rd, Fairfax, VA
2021-03-31
Install hvac in new building
Valuation:
$21,000
Permit #:
210900143
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Public service us...
Building Permit
1500 Shenandoah Rd, Alexandria, VA
2022-01-13
Replace 15 rooftop units
Valuation:
$81,000
Permit #:
220130106
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Education-include...
Building Permit
4110 Chain Bridge Rd, Fairfax, VA
2021-08-28
Install hvac in new tenant suite #101
Valuation:
$2,500
Permit #:
212400025
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
Office building
Building Permit
4110 Chain Bridge Rd, Fairfax, VA
2020-03-12
Install mechanical for existing tenant
Valuation:
$4,500
Permit #:
200720326
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
Office building
Building Permit
8350 Broad St, Mclean, VA
2019-11-08
Installing one drain condensate and hi-e dry 195/back water valve
Valuation:
N/A
Permit #:
193120182
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
Office building
(2) new canopy additions to north and south ends of facility
Valuation:
$10,000
Permit #:
PLB2018-00868
Status:
final
Fee:
$420
Permit Type:
N/A
Building Type:
N/A
Upgrade plumbing in new tenant
Valuation:
$8,500
Permit #:
201550081
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
Office building
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H&d Mechanical LLC Reviews
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Verified License
BuildZoom confirmed this contractor's license
H&d Mechanical LLC License info
Verified License
| License # | 2705129935 |
| Status | Active |
| State | Virginia |
| Type | Plumbing (Plb), Gas Fitting (Gfc), Heating Ventilation And Air Conditioning (Hva) |
| Business Type | Llc |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for H&d Mechanical LLC at the Virginia Department of Professional and Occupational Regulation.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 2705129935 |
| Status | Inactive |
| County | Spotsylvania County |
| Type | Contractor |
| Business Type | Llc |
- According to the Spotsylvania County, VA, 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 H&d Mechanical LLC at the Spotsylvania County, VA.
This is a sample of licensing data; click here to access a complete history.
95
BuildZoom Score
41
Permits
- Building permit records show that H&d Mechanical LLC has worked on 41 permitted projects.