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Location and Projects

Address
129 Miller Ave, Mill Valley, CA, 94941
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Michael Heacock Architect

Michael Heacock Architects is an award-winning, Mill Valley-based firm specializing in high-performance ecological architecture and green interior design. Founded in 2006, we blend "Regionalism" with modern sustainability to create beautiful, net-zero homes and commercial spaces across the San Francisco Bay Area and Southern California.
Our Expertise:
Custom Residential: Eco-friendly luxury homes, ADUs, and renovations.
Commercial & Educational: LEED-certified schools, offices, and aquatic centers.
Sustainability Leaders: Specialists in passive heating, natural ventilation, and reclaimed materials.
LEED Consulting: Expertise in Platinum-level certification and high-performance building.
We believe beauty is the ultimate sustainability. Whether it’s the Mill Valley Lumber Yard or a private Sonoma retreat, we design structures that honor the land and the people who use them.

From BuildZoom: Michael Heacock Architect, 129 Miller Ave, Mill Valley, CA (Employee: Heacock Michael) holds a Architect license according to the California license board.

Their BuildZoom score of 108 ranks in the top 5% of 336,931 California licensed contractors.

Their license was verified as active when we last checked. If you are thinking of hiring Michael Heacock Architect, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.

Michael Heacock Architect Contact Information

Phone: (415) 845-5326
Address: 129 Miller Ave, Mill Valley, CA 94941

Michael Heacock Architect Mill Valley

Quality

108
95th percentile
How is the BuildZoom score calculated?
Pro tip: We generally recommend hiring a contractor with a score higher than 95.
Michael Heacock Architect has a BuildZoom score of 108, which places them above 95% of 336,931 contractors in California.

Activity

1 project
 2025
3 projects
 2024
Our building permit records indicate that Michael Heacock Architect has worked on at least 4.0 projects 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.

Pricing

1 project
 < $5k
1 project
 $20k-$50k
1 project
 $250k-$500k
1 project
 $1mil+
Value Not Public: 0 projects
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 Michael Heacock Architect

Sort by: Notable Notable | Date Date | Job Value Job Value

This is a sample of this contractor's permits. Click here to access their complete permit history.

Accessory dwelling unit
2088 Paradise Dr, Belvedere Tiburon, CA, 94920
2025-05-12
335 sq ft addition 1000 sq ft adu 600 sq ft parking deck
Valuation:
$1,361,250
Permit #:
ADU24-002
Status:
issued
Fee:
$34,848
Permit Type:
N/A
Building Type:
N/A
Building submittal - residential
2300 3rd Ave, Napa, CA, 94558
2024-05-16
Residential remodel and addition main house: interior remodel and 391 sf addition
Valuation:
$490,000
Permit #:
S24-00638-RES
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential-addition
2300 3rd Ave, Napa, CA, 94558
2024-09-23
Main dwelling addition and alteration - adding 391 s.f. conditioned space
Valuation:
$490,000
Permit #:
BR24-00731-ADD
Status:
issued
Fee:
$15,008
Permit Type:
N/A
Building Type:
N/A
Building
545 Point Lobos Ave, San Francisco, CA, 94121
2024-04-25
Requesting technical infeasibility to comply with abe program. abe 201806110603. for restaurant only
Valuation:
$2,500
Permit #:
202404250693
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
05 - food/beverag...
Plan check residential
6 Hill St, Mill Valley, CA, 94941
2021-12-01
Residential remodel + small addition (less than 200 sq. ft.)
Valuation:
N/A
Permit #:
B-041306
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building
3950 Civic Center Dr, San Rafael, CA, 94903
2021-02-04
Tenant improvement including demolish of non-bearing walls
Valuation:
N/A
Permit #:
B2010-193
Status:
final
Fee:
$2,586
Permit Type:
Alter-commercial
Building Type:
N/A
Residential plan check
251 Corte Madera Ave, Mill Valley, CA, 94941
2020-04-15
Residence addition + rem 475 sq ft + exterior improve
Valuation:
N/A
Permit #:
B-039467
Status:
issued
Fee:
N/A
Permit Type:
Additions/remodels
Building Type:
N/A
Residential
6 Hill St, Mill Valley, CA, 94941
2021-01-21
Residential bathroom renovation
Valuation:
N/A
Permit #:
B-040702
Status:
final
Fee:
N/A
Permit Type:
Additions/remodels
Building Type:
N/A
Revaluation residence
6 Hill St, Mill Valley, CA, 94941
2021-11-23
Reval
Valuation:
$6,536
Permit #:
REVAL-000328
Status:
final
Fee:
$201
Permit Type:
Residential
Building Type:
N/A
Building
148 Knight Dr, San Rafael, CA, 94901
2019-12-11
2nd story addition of master suite & bathroom
Valuation:
N/A
Permit #:
B1903-025
Status:
final
Fee:
$4,587
Permit Type:
Alter-sfd
Building Type:
N/A
Revaluation residence
630 Summit Ave, Mill Valley, CA, 94941
2024-06-13
Reval
Valuation:
$45,370
Permit #:
REVAL-047271
Status:
final
Fee:
$2,928
Permit Type:
Residential
Building Type:
N/A
Commercial plan check
616 Throckmorton Ave, Mill Valley, CA, 94941
2015-06-02
Deck rebuild
Valuation:
N/A
Permit #:
B-032157
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Revaluation commercial
401 Miller Ave, Mill Valley, CA, 94941
2022-10-25
Reval
Valuation:
$66,000
Permit #:
REVAL-000397
Status:
final
Fee:
$2,564
Permit Type:
N/A
Building Type:
N/A
Building
585 Howard St, San Francisco, CA, 94105
2021-07-28
Applying for change of occupancy from m to b. based on apprvd conditionl use permit to convert grnd floor & mezz to office space apprvd by planning dept on 4/23/2020. record # 2018-016668 cua. will be implementing conditions of approval. removing frosted film from st lvl wndws-howard st
Valuation:
$5,000
Permit #:
202012110872
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
10 - office
Building permit with plan check
369 Todd Rd, Santa Rosa, CA, 95407
2021-04-25
6/28/21 temp occ legalize commercial tenant improvements for building 1. office and distribution warehouse electrical & mechanical improvements remodel 2 restrooms set cargo containers
Valuation:
N/A
Permit #:
BLD21-1232
Status:
issued
Fee:
$25,057
Permit Type:
N/A
Building Type:
N/A
Bldg-addition
3851 N Kingswood Rd, Sherman Oaks, CA, 91403
2011-11-08
Demolish 54 x 80 2 story portion of (e) 2 story single family dwelling and replace with 52 x 71 irregular 3 story addition and interconnect attached accessory living quarters to create a 81 x 123 3 story 5 br 5 bathroom single family dwelling w roof deck on 3rd story and attached 2 car garage
Valuation:
N/A
Permit #:
11014-20000-02174
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Building
5 3rd St, San Francisco, CA, 94103
2012-10-05
9th floor - construction of full height furniture partitions to create 1 conf room & 8 offices. mechanical electrical life safety & sprinkler modifications are not under this permit
Valuation:
$50,000
Permit #:
201205089979
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
10 - office
Bldg-alter/repair
3851 N Kingswood Rd, Sherman Oaks, CA, 91403
2015-04-30
Supplemental permit to revise structural plans
Valuation:
N/A
Permit #:
11014-20005-02174
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Bldg-addition
3851 N Kingswood Rd, Sherman Oaks, CA, 91403
2015-04-30
Supplemental permit to addition 178sqft to (e) 3 story single family dwelling
Valuation:
$5,000
Permit #:
11014-20002-02174
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Permit
755 Folger Ave, Berkeley, CA, 94710
1999-12-13
Remodel and raiase existing house. addition manufacturing below and addition new roof
Valuation:
$129,710
Permit #:
B1999-05665
Status:
Closed Expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A

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