Updated: Jun 23, 2026
Location and Projects
Address
3963 LORD BYRON CIR., Round Rock, TX, 78664
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Darling's Heating & Air Conditioning
Darling's Heating & Air Conditioning, 3963 Lord Byron Cir, Round Rock, TX (Owned by: Mark D. Darling) holds a Hbe Heating Air State Mechanical license and 2 other licenses according to the San Antonio license board.
Their BuildZoom score of 0 does not rank in the top 50% of Texas contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Darling's Heating & Air Conditioning, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Darling's Heating & Air Conditioning Services
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Darling's Heating & Air Conditioning Contact Information
Phone Number: (512) 828-4350
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Address: 3963 LORD BYRON CIR., Round Rock, TX 78664
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Building Permits by Darling's Heating & Air Conditioning
This is a sample of this contractor's permits. Click here to access their complete permit history.
Mechanical permit - remodel - remodel to enclose existing covered patio to create master bedroom and bathroom. remove and replace windows. remove interior wall in kitchen and replace with load bearing beam. create laundry room. new doors in rear of house. hvac work. upgrade electrical. mep permits required. sheetrock work throughout house as needed. 3 total bathrooms = 5/8 meter. - r-... see more
Valuation:
N/A
Permit #:
2009-090317 MP
Status:
final
Fee:
$241
Permit Type:
R- 435 renovation...
Building Type:
N/A
Mechanical permit - addition and remodel - partial demolition to accomodate 594 sf addition to existing sf residence to create bedroom and bathroom on 2nd floor addition to kitchen hvac windows new siding electrical modifications roofline modifications to change existing elevations modify existing impervious coverage to accomodate new addition - r- 434 addition & alterations
Valuation:
N/A
Permit #:
2008-060165 MP
Status:
final
Fee:
$96
Permit Type:
R- 434 addition &...
Building Type:
N/A
Mechanical permit - addition and remodel - addition 1st story m suite to rear of exst 1 story sf residence. expand kitchen relo utility room. update plmg/elec. new hvac. addition attached carport. addition 2 story bath/2 bdrms sitting area. replace exst windows. repair exst foundation. replace roof. - r- 434 addition & alterations
Valuation:
N/A
Permit #:
2007-137325 MP
Status:
final
Fee:
$126
Permit Type:
R- 434 addition &...
Building Type:
N/A
Mechanical permit - addition and remodel - addition/remodel existing sf residence addition 36 sf closet to the rear of house remodel carport into garage remodel & update interior of house new windows and doors update kitchen & bathrooms & electrical plumbing & mechanical. - r- 434 addition & alterations
Valuation:
N/A
Permit #:
2007-110110 MP
Status:
final
Fee:
$29
Permit Type:
R- 434 addition &...
Building Type:
N/A
Mechanical permit - addition and remodel - rmdl to replace siding & addition bedroom bathroom & laundryroom ( 2 bathrooms 5/8 meter) to rear of exst 1 story sf residence. addition covered breezeway to attach exst 1 story det garage/carport. (finish out #06018239 electric work already finaled). - r- 434 addition & alterations
Valuation:
N/A
Permit #:
2008-002667 MP
Status:
final
Fee:
$41
Permit Type:
R- 434 addition &...
Building Type:
N/A
Mechanical permit - addition - extend 1st floor on rear of exst 1 story sf residence to addition master suite dining room expand kitchen covered and uncovd patio construct 2nd story over 1st floor addition to include 2 bdrms bathroom uncovd deck. - r- 434 addition & alterations
Valuation:
N/A
Permit #:
2007-167336 MP
Status:
final
Fee:
$56
Permit Type:
R- 434 addition &...
Building Type:
N/A
Mechanical permit - addition - add closet & expand laundry & master bath & remodel existing residence ( 3 bathrooms 5/8" meter)upgrading exst. elec. srv only - r- 434 addition & alterations
Valuation:
N/A
Permit #:
2006-027214 MP
Status:
final
Fee:
$57
Permit Type:
R- 434 Addition &...
Building Type:
N/A
Mechanical permit - addition - addition closet & expand laundry & master bathroom & remodel existing residence ( 3 bathrooms 5/8 meter)upgrading exst. electrical. srv only - r- 434 addition & alterations
Valuation:
N/A
Permit #:
2006-027214 MP
Status:
final
Fee:
$57
Permit Type:
R- 434 addition &...
Building Type:
N/A
Mechanical permit - addition - rmdl kichen & lvg room addition master suite bathrm study lvg room & 2nd sty bedroom & bathrm/upgrading exst. electrical. srv only - r- 434 addition & alterations
Valuation:
N/A
Permit #:
2006-014689 MP
Status:
final
Fee:
$101
Permit Type:
R- 434 addition &...
Building Type:
N/A
Mechanical permit - addition - addition: carprt strge room utility room mastr closet & bathrm remdl: refnsh flrs nw tile nw fnce paint & txtre - r- 434 addition & alterations
Valuation:
N/A
Permit #:
2006-019034 MP
Status:
final
Fee:
$41
Permit Type:
R- 434 addition &...
Building Type:
N/A
Mechanical permit - remodel - change of use and interior remodel from warehouse to light manufacturing (install coffee bean roaster) - c-1000 commercial remodel
Valuation:
N/A
Permit #:
2007-004306 MP
Status:
final
Fee:
$23
Permit Type:
C-1000 Commercial...
Building Type:
N/A
Mechanical permit - addition and remodel - addition master suite and utility to rear of exst 1 story sf residence. repair/replace sheetrock in exst. addition new hvac. - r- 434 addition & alterations
Valuation:
N/A
Permit #:
2007-119613 MP
Status:
final
Fee:
$128
Permit Type:
R- 434 addition &...
Building Type:
N/A
Mechanical permit - remodel - rmdl interior & exterior sf res: change pitch of roof replace stucco windows electrical plumbing hvac sheetrock - r- 435 renovations/remodel
Valuation:
N/A
Permit #:
2006-006164 MP
Status:
final
Fee:
$185
Permit Type:
R- 435 renovation...
Building Type:
N/A
Mechanical permit - addition - rmdl kichen & lvg rm, add master suite, bathrm, study, lvg rm, & 2nd sty bdrm & bathrm/upgrading exst. elec. srv only - r- 434 addition & alterations
Valuation:
N/A
Permit #:
2006-014689 MP
Status:
final
Fee:
$101
Permit Type:
R- 434 Addition &...
Building Type:
N/A
Mechanical permit - remodel - change of use and interior remodel from warehouse to light manufacturing (install coffee bean roaster) - c-1000 commercial remodel
Valuation:
N/A
Permit #:
2007-004306 MP
Status:
final
Fee:
$23
Permit Type:
C-1000 commercial...
Building Type:
N/A
Mechanical permit - remodel - interior rmdl (interior demo)reconstruct interior walls-rooms-closets within exist footprint of residence. - r- 435 renovations/remodel
Valuation:
N/A
Permit #:
2002-009612 MP
Status:
final
Fee:
$70
Permit Type:
R- 435 renovation...
Building Type:
N/A
Mechanical permit - remodel - repair fire damage sf residence- **for electrical upgrade or change of elect service a lsd reqd*** - r- 435 renovations/remodel
Valuation:
N/A
Permit #:
2004-002832 MP
Status:
final
Fee:
$86
Permit Type:
R- 435 renovation...
Building Type:
N/A
Mechanical permit - addition and remodel - interior remodel of an exisiting personal service & addition to addition a bathroom and replace roof - c- 437 addition alter convn-nonres
Valuation:
N/A
Permit #:
2007-143726 MP
Status:
final
Fee:
$315
Permit Type:
C- 437 addition a...
Building Type:
N/A
Mechanical permit - remodel - remodel of existing restaurant to create a bar/lounge and addition a new rooftop deck (2115sf) - c-1000 commercial remodel
Valuation:
N/A
Permit #:
2005-015602 MP
Status:
final
Fee:
$86
Permit Type:
C-1000 commercial...
Building Type:
N/A
Mechanical permit - new - new 2 story two-family residential w detached garage (attached to two-family building). - r- 102 secondary apartment
Valuation:
N/A
Permit #:
2007-145343 MP
Status:
final
Fee:
$44
Permit Type:
R- 102 secondary ...
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Darling's Heating & Air Conditioning License info
Verified License
| License # | HBE20173 |
| Status | Active |
| City | San Antonio |
| Type | Hbe Heating Air State Mechanical |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Darling's Heating & Air Conditioning at the City of San Antonio, TX Licensed Contractors.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | HBE20173 |
| Status | Active |
| City | San Antonio |
| Type | Hbe Heating Air State Mechanical |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Darling's Heating & Air Conditioning at the City of San Antonio, TX Licensed Contractors.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | HBE20173 |
| Status | Inactive |
| City | San Antonio |
- According to the City of San Antonio, TX Licensed Contractors, 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 Darling's Heating & Air Conditioning at the City of San Antonio, TX Licensed Contractors.
This is a sample of licensing data; click here to access a complete history.
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BuildZoom Score
- How the BuildZoom Score works
- *No active license on file. If you are Darling's Heating & Air Conditioning, click “This is My Business” to update your information.
142
Permits
- Building permit records show that Darling's Heating & Air Conditioning has worked on 142 permitted projects.
Darling's Heating & Air Conditioning Employees
MD
Mark D Darling
None
MD
Mark D. Darling
Owner
NN
None None
None