Updated: Aug 14, 2025
Location and Projects
Address
777 Lexington Ave, Brooklyn, NY, 11221
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Charles Diehl Architect LLC Photos
Charles Diehl Architect LLC
We are a full-service architecture firm with experience in the residential, commercial, and institutional sectors. Our work includes new buildings and renovations, ranging in scale from single-family dwellings to multi-story mixed-use towers. We have developed designs for restaurant interiors, custom homes, commercial spaces, apartment buildings, and religious institutions. We are proud to have worked on many unique projects such as Landmarked properties and sustainable designs.
From BuildZoom: Charles Diehl Architect LLC, 777 Lexington Ave, Brooklyn, NY holds a Architecture license according to the New York license board.
Their BuildZoom score of 125 ranks in the top 1% of 77,888 New York licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Charles Diehl Architect LLC, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Charles Diehl Architect LLC Services
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Charles Diehl Architect LLC Contact Information
Phone Number: (347) 678-3501
Address: 777 Lexington Ave, Brooklyn, NY 11221
Charles Diehl Architect LLC Reviews
4 out of 5 stars, based on
2
reviews
-
By a user in BrooklynSeptember 14, 2018Verified Hire
-
By MathewDecember 9, 2017Verified Hire
I would recommend them. Charles does a bunch of jobs for me and I have no complaints.
Building Permits by Charles Diehl Architect LLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
Alteration type 1 - proposed horizontal enlargement to convert 4-family residential building into a 3-family residential building. installation of new and replacement or relocation of existing fixtures finishes casework partitions interior stair exterior doors and windows
Valuation:
$536,800
Permit #:
321991412-01-AL
Status:
issued
Fee:
$1,553
Permit Type:
N/A
Building Type:
N/A
Plumbing - alteration type 1 proposed horizontal enlargement to convert 4-family residential building into a 3-family residential building. installation of new and replacement or relocation of existing fixtures finishes casework partitions interior stair exterior doors and windows
Valuation:
$536,800
Permit #:
321991412-01-PL
Status:
issued
Fee:
$1,553
Permit Type:
N/A
Building Type:
N/A
Alteration type 2 - gen. constr. relocation replacement and installation of new and existing fixtures finishes casework partitions interior stair and windows on floors: cellar first second third and roof
Valuation:
$546,400
Permit #:
322019604-01-EW-OT
Status:
issued
Fee:
$1,539
Permit Type:
N/A
Building Type:
N/A
Alteration type 1 - proposed interior renovation of an existing 2-story over cellar 2-family residential brick building. installation of new and replacement or relocation of existing fixtures finishes casework and partitions to convert 1st floor from residential to community facility
Valuation:
$229,350
Permit #:
340763819-01-AL
Status:
issued
Fee:
$2,618
Permit Type:
N/A
Building Type:
N/A
Interior renovation of all floors including demolition and replacement relocation and installation of interior non-bearing partitions fixtures finishes casework and equipment
Valuation:
$405,500
Permit #:
321787955-01-EW-OT
Status:
issued
Fee:
$1,173
Permit Type:
N/A
Building Type:
N/A
Alteration type 2 - gen. constr. replacement relocation and installation of interior nonbearing partitions fixtures finishes casework and equipment. on floors: partial cellar partial first floor second third and partial fourth floors only
Valuation:
$600,000
Permit #:
340700085-01-EW-OT
Status:
issued
Fee:
$6,374
Permit Type:
N/A
Building Type:
N/A
Plumbing - alteration type 1 alter 1 filed for vertical enlargement to an existing 3 story residential building
Valuation:
$483,550
Permit #:
421625101-01-PL
Status:
issued
Fee:
$5,234
Permit Type:
N/A
Building Type:
N/A
Alteration type 1 - existing five story mixed use residential community facility and commercial building. scope of work includes amending the certificate occupancy to change use of ground floor commercial space to community facility and erect partitions. amending community facility on the 2nd floor to use group 3
Valuation:
$120,000
Permit #:
321595118-01-AL
Status:
issued
Fee:
$1,485
Permit Type:
N/A
Building Type:
N/A
Alteration type 1 - amending certificate of occupancy interior renovations and plumbing as per plan
Valuation:
$501,000
Permit #:
421551911-01-AL
Status:
issued
Fee:
$5,429
Permit Type:
N/A
Building Type:
N/A
Plumbing - alteration type 2 interior renovation of apartment 10c on the 10th floor including replacement relocation and installation of new partitions fixtures finishes and casework
Valuation:
$65,000
Permit #:
122979795-01-PL
Status:
issued
Fee:
$883
Permit Type:
N/A
Building Type:
N/A
Alteration type 1 required to meet new building requirements (28-101.4.5) proposed vertical expansion of an existing 2-story residential building to create 3-story with loft residential building
Valuation:
$533,900
Permit #:
421467219-01-AL
Status:
issued
Fee:
$1,475
Permit Type:
N/A
Building Type:
N/A
Plumbing - alteration type 2 removal replacement relocation and installation of interior walls partitions fixture and finishes at second and third floors only. no change in use egress or occupancy filed under this application
Valuation:
$200,025
Permit #:
322058973-01-PL
Status:
issued
Fee:
$640
Permit Type:
N/A
Building Type:
N/A
Plumbing - alteration type 1 proposed interior renovation of an existing 2-story over basement and cellar residential building. installation of new and replacement or relocation of existing fixtures finishes casework partitions interior and exterior stairs exterior doors and windows
Valuation:
$399,700
Permit #:
321798284-01-PL
Status:
issued
Fee:
$1,197
Permit Type:
N/A
Building Type:
B3-2 family dwelling
Alteration type 1 required to meet new building requirements (28-101.4.5) proposed vertical and horizontal enlargement of an existing 2-story over basement residential building to create 4-story residential building and upgrade construction class to noncombustible 1-b
Valuation:
$1,734,800
Permit #:
321787937-01-AL
Status:
issued
Fee:
$4,598
Permit Type:
N/A
Building Type:
B3-2 family dwelling
Alteration type 1 - proposed interior renovation of an existing 2-story over basement and cellar residential building. installation of new and replacement or relocation of existing fixtures finishes casework partitions interior and exterior stairs exterior doors and windows
Valuation:
$399,700
Permit #:
321798284-01-AL
Status:
filed
Fee:
$1,197
Permit Type:
N/A
Building Type:
B3-2 family dwelling
Alteration type 1 - construction equipment - fence proposed vertical expansion of existing 3-story residential building to create a 4-story multiple dwelling building
Valuation:
$560,900
Permit #:
421467184-01-EQ-FN
Status:
issued
Fee:
$3,183
Permit Type:
N/A
Building Type:
C2-walk-up apartment
Plumbing - alteration type 1 interior alteration of an existing 2 story & basement two-family dwelling including installation of new and replacement/relocation of existing fixtures finishes and partitions. this application is filed for work on basement 2fl & roof to create habitable rooms in the basement. installation of 3 piece bat hroom at 2 fl and occupancy on the roof
Valuation:
$95,400
Permit #:
421718458-01-PL
Status:
issued
Fee:
$357
Permit Type:
N/A
Building Type:
N/A
Alteration type 1 - interior alteration of an existing 2 story & basement two-family dwelling including installation of new and replacement/relocation of existing fixtures finishes and partitions. this application is filed for work on basement 2fl & roof to create habitable rooms in the basement. installation of 3 piece bat hroom at 2 fl and occupancy on the roof
Valuation:
$95,400
Permit #:
421718458-01-AL
Status:
issued
Fee:
$357
Permit Type:
N/A
Building Type:
N/A
Alteration type 1 - proposed vertical expansion of an existing 2-story mixed use building to use building to create 6 story mixed use multiple dwelling
Valuation:
$1,779,500
Permit #:
3PL008207-01-EW-SP
Status:
issued
Fee:
$12,789
Permit Type:
N/A
Building Type:
N/A
Plumbing - alteration type 2 minor partition plumbing and mechanical work to renovate an existing 2 story with cellar 2 familt and store building. application is filed to apply for work as a mixed use building to replace prior filing 440485146 that was incorrectly filed as a 1, 2, 3 family building
Valuation:
$236,000
Permit #:
421673175-01-PL
Status:
issued
Fee:
$1,997
Permit Type:
N/A
Building Type:
S2-residence-multi-u
Verified License
BuildZoom confirmed this contractor's license
Charles Diehl Architect LLC License info
Verified License
| License # | 32543 |
| Status | Active |
| State | New York |
| Type | Architecture |
| Business Type | Limited Liability Company (Llc) |
- BuildZoom verified this license was active as of August 2025.
Verify this license's status for Charles Diehl Architect LLC at the New York Office of the Professions.
This is a sample of licensing data; click here to access a complete history.
125
BuildZoom Score
147
Permits
- Building permit records show that Charles Diehl Architect LLC has worked on 147 permitted projects.
I can't say that I wouldn't recommend Charles, but I also cannot say that if I needed an architect again that he'd be my first choice. Or, if I did hire him again, I'd have to be prepared to stay on top of him and his subcontractors. My project, which was supposed to take 8 weeks, just hit two years--and it's still not completed.