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Design Firm
HERITAGE CONSERVATION ARCHITECTURE
Design
3 projects with open permitsMANHATTAN · 5
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4 buildings
8
Total Filings
5
Projects on File
4
Buildings Worked
3
Projects w/ Open Permits
Design
Role
Activity
Projects by first filing month5 projects all-time
0123Mar '24 · 1Mar '25 · 1Mar '26 · 2Jun '26 · 1Mar '24Jun '24Sep '24Dec '24Mar '25Jun '25Sep '25Dec '25Mar '26Jun '26
bars = month · line = 3-mo average
Portfolio status
Browse projects →
Open permit360%
Signed off120%
Filed only120%
By project type
Alteration5
Most active buildings
All buildings →
788 BROADWAYMANHATTAN · 1 open · latest 06/08/2026
2 projects
804 BROADWAYMANHATTAN · 1 open · latest 05/21/2026
1 projects
1075 PARK AVENUEMANHATTAN · latest 05/09/2024
1 projects
530 WEST 120 STREETMANHATTAN · 1 open · latest 08/31/2026
1 projects
Key relationships
Everyone →
Design firms
2 projects
1 projects
1 projects
Filing representatives
4 projects
1 projects
People
All people →
Nathaniel Schlundtlatest 05/15/2026
6 filings
Filed under
HERITAGE CONSERVATION ARCHITECTURE8
Identified by the contact ids of the people who file for the firm and by its email domain (hca-pc.com), not by matching names.
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01364932 ↗530 WEST 120 STREET
MANHATTAN
AlterationPermit Issued03/19/202608/31/2026
Owner COLUMBIA UNIVERSITY
Contractor SPK/LEWIS CONSTRUCTION LL
Filer OUTSOURCE CONSULTANTS, INC.
SUBSQUENT STRUCTURAL FILING AS SHOWN HEREWITH. NO CHANGES TO EGRESS, OCCUPANCY OR USE
M01402984 ↗788 BROADWAY
MANHATTAN
AlterationFiled — no permit on record06/08/2026—
Owner Grace Church In New York
Filer MUNICIPAL BUILDING CONSULTANTS
—
M01190684 ↗788 BROADWAY
MANHATTAN
AlterationPermit Issued03/20/202505/22/2026
Owner Grace Church In New York
Contractor CYPRESS GREEN CONST CO
Filer MUNICIPAL BUILDING CONSULTANTS
STRUCTURAL WORK TO ROOF ASSOCIATED WITH FACADE REPAIRS AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS OR OCCUPANCY.
M01370717 ↗804 BROADWAY
MANHATTAN
AlterationPermit Issued03/13/202605/21/2026
Owner Grace Church In New York
Contractor CYPRESS GREEN CONST CO
Filer MUNICIPAL BUILDING CONSULTANTS
STRUCTURAL ROOF AND FACADE REPAIRS AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS OR OCCUPANCY.
M01020724 ↗1075 PARK AVENUE
MANHATTAN
AlterationSigned-off03/27/202405/09/2024
Contractor DEERPATH CONSTRUCTION
Filer MUNICIPAL BUILDING CONSULTANTS
STRUCTURAL WORK FOR LINTEL REPAIRS AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS OR OCCUPANCY.
Counts cover all 5 projects (5 DOB NOW). Dated by first filing; BIS projects by first permit issuance.
Every person filing for this firm, identified by their DOB NOW contact id (one id is one person). A person is listed under the firm they file for most.
PersonFilingsMost recent
Nathaniel Schlundt605/15/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
Keast & Hood Co of New York PC204/06/2026
OLD STRUCTURES ENGINEERING109/24/2024
TYLin105/20/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
CYPRESS GREEN CONST CO204/06/2026
DEERPATH CONSTRUCTION109/24/2024
SPK/LEWIS CONSTRUCTION LL105/20/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
Grace Church In New York306/08/2026
COLUMBIA UNIVERSITY105/20/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
MUNICIPAL BUILDING CONSULTANTS406/08/2026
OUTSOURCE CONSULTANTS, INC.105/20/2026
5 DOB NOW projects, anchored the same way as Buildings Worked. Status is the project's permit state today: open = at least one permit currently issued. BIS projects show their raw permit status and are not counted as open.
All 5Open permit 3Signed off 1Filed only 1
5 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01364932 ↗530 WEST 120 STREET
MANHATTAN
AlterationPermit Issued03/19/202608/31/2026
Owner COLUMBIA UNIVERSITY
Contractor SPK/LEWIS CONSTRUCTION LL
Filer OUTSOURCE CONSULTANTS, INC.
SUBSQUENT STRUCTURAL FILING AS SHOWN HEREWITH. NO CHANGES TO EGRESS, OCCUPANCY OR USE
M01402984 ↗788 BROADWAY
MANHATTAN
AlterationFiled — no permit on record06/08/2026—
Owner Grace Church In New York
Filer MUNICIPAL BUILDING CONSULTANTS
—
M01190684 ↗788 BROADWAY
MANHATTAN
AlterationPermit Issued03/20/202505/22/2026
Owner Grace Church In New York
Contractor CYPRESS GREEN CONST CO
Filer MUNICIPAL BUILDING CONSULTANTS
STRUCTURAL WORK TO ROOF ASSOCIATED WITH FACADE REPAIRS AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS OR OCCUPANCY.
M01370717 ↗804 BROADWAY
MANHATTAN
AlterationPermit Issued03/13/202605/21/2026
Owner Grace Church In New York
Contractor CYPRESS GREEN CONST CO
Filer MUNICIPAL BUILDING CONSULTANTS
STRUCTURAL ROOF AND FACADE REPAIRS AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS OR OCCUPANCY.
M01020724 ↗1075 PARK AVENUE
MANHATTAN
AlterationSigned-off03/27/202405/09/2024
Contractor DEERPATH CONSTRUCTION
Filer MUNICIPAL BUILDING CONSULTANTS
STRUCTURAL WORK FOR LINTEL REPAIRS AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS OR OCCUPANCY.
Scope of Work
Structural — 3 projects · most recent 05/20/2026
Masonry Wood Steel
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
788 BROADWAY ↗305/15/2026
530 WEST 120 STREET ↗205/15/2026
1075 PARK AVENUE ↗209/17/2024
804 BROADWAY ↗1—
▾Documents — 71 on file (BIS + DOB NOW)
▸Plans & Drawings13
▸DOB NOWPlans/Sketch13
08/26/2026M01020724-I1 · 1075 PARK AVENUERequest digital key ↗
08/26/2026M01020724-P1 · 1075 PARK AVENUERequest digital key ↗
08/26/2026M01020724-P2 · 1075 PARK AVENUERequest digital key ↗
Showing 3 of 13 on file for this type
▸Applications & Permits9
▸DOB NOWLPC Approval/Permit9
08/16/2026M01402984-I1 · 788 BROADWAYOpen ↗
08/13/2026M01020724-P1 · 1075 PARK AVENUEOpen ↗
08/13/2026M01020724-P2 · 1075 PARK AVENUEOpen ↗
Showing 3 of 9 on file for this type
▸Seals & Professional Certifications27
▸DOB NOWDPL-1: Design Professional Seal & Signature12
08/24/2026M01190684-S1 · 788 BROADWAYOpen ↗
08/24/2026M01190684-I1 · 788 BROADWAYOpen ↗
08/18/2026M01370717-I1 · 804 BROADWAYOpen ↗
Showing 3 of 12 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature9
09/01/2026M01364932-S1 · 530 WEST 120 STREETOpen ↗
09/01/2026M01364932-S1 · 530 WEST 120 STREETOpen ↗
09/01/2026M01364932-S1 · 530 WEST 120 STREETOpen ↗
Showing 3 of 9 on file for this type
▸DOB NOWProgress Inspector Seal & Signature6
09/01/2026M01364932-S1 · 530 WEST 120 STREETOpen ↗
09/01/2026M01190684-I1 · 788 BROADWAYOpen ↗
08/27/2026M01370717-I1 · 804 BROADWAYOpen ↗
Showing 3 of 6 on file for this type
▸Environmental & Asbestos10
▸DOB NOWDEP ACP-5: Asbestos Assessment Report6
08/18/2026M01364932-P1 · 530 WEST 120 STREETOpen ↗
08/18/2026M01364932-I1 · 530 WEST 120 STREETOpen ↗
08/13/2026M01020724-I1 · 1075 PARK AVENUEOpen ↗
Showing 3 of 6 on file for this type
▸DOB NOWDEP ACP-20/ACP-21: Asbestos Project Conditional Completion Form/Asbestos Project Completion Form4
08/24/2026M01190684-I1 · 788 BROADWAYOpen ↗
08/24/2026M01190684-S1 · 788 BROADWAYOpen ↗
08/18/2026M01370717-I1 · 804 BROADWAYOpen ↗
Showing 3 of 4 on file for this type
▸Approvals, Objections & Sign-offs8
▸DOB NOWFee Exempt Supporting Document - DOF ACRIS report or BIB letter8
08/24/2026M01190684-S1 · 788 BROADWAYOpen ↗
08/24/2026M01190684-I1 · 788 BROADWAYOpen ↗
08/18/2026M01364932-P1 · 530 WEST 120 STREETOpen ↗
Showing 3 of 8 on file for this type
▸Other Documents4
▸DOB NOWProof of Historic Building4
08/13/2026M01020724-I1 · 1075 PARK AVENUEOpen ↗
08/13/2026M01020724-P2 · 1075 PARK AVENUEOpen ↗
08/13/2026M01190684-I1 · 788 BROADWAYOpen ↗
Showing 3 of 4 on file for this type