Cornerstone Structural Engineering, Inc is a South Dakota corporation, registered on May 9, 2024. It is based at 2922 Fuller Ave NE, Suite 106, Grand Rapids, MI, 49505. The company is currently listed as active on the South Dakota register and is registered under company number FB274644. Public records for the company include 1 SoS registration, 2 licenses, 2 federal contracts, 4 loan records and 6 Form 5500 filings. Every fact here is republished from an official public register and traces back to a primary source document.
| Legal entity name | Cornerstone Structural Engineering, Inc |
|---|---|
| Principal address | 2922 Fuller Ave NE, Suite 106Grand Rapids49505MIUnited States |
| Registration state | South Dakota |
| Status | Active |
| Formed in | Michigan (foreign registration) |
| Home company | CORNERSTONE STRUCTURAL ENGINEERING, INC. · Active |
| Registered | 9 May 2024 (over 2 years ago) |
| Entity type | Corporation |
| Standing | compliant |
| Company number | FB274644 |
| EIN | 83-3699650 |
| Employees (modeled) | ≈13 employees2024 |
| Registered agent | INCORP SERVICES, INC |
|---|
| Source registry | South Dakota Secretary of State · updated 15 June 2026 |
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| Public records | 1 SoS registration |
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| Est. revenue (modeled) | $3.6M2024 |
|---|---|
| Federal contractor | Yes · 2 federal recipient records (SAM) |
| SBA loans | $871K · approved amounts |
| State | Business name | Filed | Registered agent | Officers | Status | |
|---|---|---|---|---|---|---|
| South DakotaTHIS | Cornerstone Structural Engineering, Inc | 2024-05-09 | INCORP SERVICES, INC | — | Active | |
Filing ID FB274644 Jurisdiction Foreign · CorporationFormed in Michigan Principal address 2922 Fuller Ave NE, Suite 106, Grand Rapids, MI, 49505 Registered agent INCORP SERVICES, INC400 N MAIN AVE, STE 206, SIOUX FALLS, SD, 57104-5979 Officers Not reported | ||||||
| Alaska | Cornerstone Structural Engineering, Inc | 2026-05-01 | INCORP SERVICES, INC. | Matthew KromkeDirector, President, Shareholder | Active | |
| Arizona | Cornerstone Structural Engineering, Inc | 2024-07-18 | INCORP SERVICES, INC | Matthew KromkeOfficer, DirectorHeidi KromkeOfficer | Active | |
| California | CORNERSTONE STRUCTURAL ENGINEERING, INC | 2019-09-09 | INCORP SERVICES, INC | Heidi STRUCTURAL KromkeOfficerMATTHEW R KROMKEOfficer1 more | Revoked | |
| Colorado | Cornerstone Structural Engineering, Inc | 2024-06-25 | INCORP SERVICES, INC | — | Active | |
| Connecticut | Cornerstone Structural Engineering, Inc | 2024-08-20 | INCORP SERVICES, INC | Heidi KromkeOfficerMatthew KromkeDirector, Officer | Active | |
| District of Columbia | Cornerstone Structural Engineering, Inc. | 2026-05-08 | INCORP SERVICES, INC | Matthew Ryan KromkeOwner | Active | |
| Delaware | CORNERSTONE STRUCTURAL ENGINEERING, INC. | 2026-01-06 | INCORP SERVICES, INC | — | Unknown | |
| Florida | CORNERSTONE STRUCTURAL ENGINEERING, INC. | 2021-12-03 | INCORP SERVICES, INC | MATTHEW R KROMKEOfficerHEIDI L KROMKEOfficer2 more | Active | |
| Iowa | CORNERSTONE STRUCTURAL ENGINEERING, INC | 2024-09-04 | INCORP SERVICES, INC | Heidi KromkeOfficerMatthew KromkeOfficer | Active | |
| Indiana | CORNERSTONE STRUCTURAL ENGINEERING, INC | 2023-05-04 | INCORP SERVICES, INC | Matthew KromkeOfficerHEIDI L KROMKEOfficer | Active | |
| Kansas | Cornerstone Structural Engineering, Inc | 2024-09-11 | INCORP SERVICES, INC | — | Active | |
| Kentucky | CORNERSTONE STRUCTURAL ENGINEERING, INC. | 2024-07-15 | INCORP SERVICES,INC | HEIDI L KROMKEOfficerMatthew KromkeDirector, Officer | Active | |
| Louisiana | CORNERSTONE STRUCTURAL ENGINEERING, INC. | 2024-11-19 | INCORP SERVICES, INC | Matthew KromkeOfficer, DirectorHeidi KromkeOfficer | Active | |
| Massachusetts | CORNERSTONE STRUCTURAL ENGINEERING, INC. | 2024-06-24 | INCORP SERVICES, INC | Heidi KromkeOfficerMatthew KromkeOfficer, Director | Active | |
| Maryland | CORNERSTONE STRUCTURAL ENGINEERING, INC | 2024-09-24 | INCORP SERVICES, INC | — | Active | |
| Maine | CORNERSTONE STRUCTURAL ENGINEERING, INC. | 2024-10-07 | INCORP SERVICES, INC | — | Active | |
| Michigan | CORNERSTONE STRUCTURAL ENGINEERING, INC. | 2019-02-22 | MATTHEW KROMKE | — | Active | |
| Minnesota | Cornerstone Structural Engineering Inc | 2024-09-20 | InCorp Services, Inc | Matthew KromkeOfficer | Active | |
| Missouri | CORNERSTONE STRUCTURAL ENGINEERING, INC. | 2023-06-23 | INCORP SERVICES, INC | MATTHEW KROMKEOfficer, DirectorHEIDI KROMKEOfficer | Active | |
| Mississippi | Cornerstone Structural Engineering, Inc | 2024-07-09 | InCorp Services, Inc | Matthew KromkeDirector, OfficerHeidi L KromkeOfficer | Active | |
| Montana | Cornerstone Structural Engineering, Inc | 2024-06-27 | INCORP SERVICES, INC | Heidi KromkeOfficerMatthew KromkeDirector, Officer | Active | |
| North Carolina | SAI Structural, Inc. | 2024-08-02 | Incorp Services, Inc | — | Active | |
| North Dakota | Cornerstone Structural Engineering, Inc | 2024-06-14 | INCORP SERVICES, INC | — | Active | |
| Nebraska | CORNERSTONE STRUCTURAL ENGINEERING, INC. | 2024-06-18 | INCORP SERVICES, INC | MATTHEW KROMKEDirector, Officer | Active | |
| New Hampshire | CORNERSTONE STRUCTURAL ENGINEERING, INC. | 2020-07-09 | INCORP SERVICES, INC | Matthew KromkeDirector, OfficerHeidi KromkeOfficer | Active | |
| New Mexico | Cornerstone Structural Engineering, Inc. | 2023-03-23 | INCORP SERVICES, INC | Matthew KromkeDirector, OfficerHeidi KromkeOfficer | Active | |
| Nevada | Cornerstone Structural Engineering, Inc | 2024-08-01 | INCORP SERVICES, INC.* | Heidi KromkeOfficerMatthew KromkeOfficer, Director | Active | |
| Oklahoma | CORNERSTONE STRUCTURAL ENGINEERING, INC. | 2024-07-26 | INCORP SERVICES, INC | — | Active | |
| Oregon | CORNERSTONE STRUCTURAL ENGINEERING, INC | 2024-10-03 | INCORP SERVICES, INC | HEIDI KROMKEOfficerMATTHEW KROMKEOfficer | Active | |
| Pennsylvania | Cornerstone Structural Engineering, Inc. | 2022-04-28 | — | Heidi L KromkeOfficerMatthew KromkeDirector, Officer | Active | |
| South Carolina | Cornerstone Structural Engineering, Inc | 2024-05-23 | InCorp Services, Inc | — | Active | |
| Tennessee | CORNERSTONE STRUCTURAL ENGINEERING, INC. | 2022-04-25 | INCORP SERVICES, INC | — | Active | |
| Texas | Cornerstone Structural Engineering, Inc. | 2019-10-21 | InCorp Services, Inc | HEIDI L KROMKEOfficerMATTHEW KROMKEDirector, Officer | Active | |
| Utah | CORNERSTONE STRUCTURAL ENGINEERING INC. | 2024-05-17 | INCORP SERVICES, INC | Matthew KromkeOfficer, DirectorHeidi L KromkeOfficer | Active | |
| Virginia | Cornerstone Structural Engineering, Inc. | 2024-05-29 | INCORP SERVICES INC | Matthew KromkeOfficerHeidi L KromkeOfficer | Active | |
| Washington | CORNERSTONE STRUCTURAL ENGINEERING, INC. | 2025-01-25 | INCORP SERVICES, INC | MATTHEW KROMKEDirector | Active | |
| Wisconsin | CORNERSTONE STRUCTURAL ENGINEERING, INC. | 2021-04-12 | InCorp Services, Inc | — | Active | |
| West Virginia | CORNERSTONE STRUCTURAL ENGINEERING, INC | 2024-08-29 | INCORP SERVICES, INC | MATTHEW KROMKEOfficer, DirectorHEIDI L KROMKEOfficer | Active | |
Companies and people linked to Cornerstone Structural Engineering, Inc in the state registers through shared officers, a shared registered agent, shared filing contacts or a shared address. Service companies file for many unrelated businesses — a shared agent, address or contact alone does not prove affiliation.
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| State | License / ID | Type | Issued | Status | |
|---|---|---|---|---|---|
| Connecticut | — | — | 2025-10-11 | ACTIVE | |
| Connecticut | — | CORPORATION | — | ACTIVE | |
| Amount | Approved | Lender | Jobs | Status | |
|---|---|---|---|---|---|
| $320,000 | 2024-03-23 | The Huntington National Bank | — | EXEMPT | |
| $355,000 | 2019-04-23 | The Huntington National Bank | — | P I F | |
| $90,000 | 2019-04-23 | The Huntington National Bank | — | P I F | |
| $105,692 | 05/05/2020 | The Huntington National Bank | 6 | Paid in Full | |
Employee-benefit plan filings by Cornerstone Structural Engineering, Inc with the Department of Labor. Employee and revenue figures are modeled estimates derived from retirement-plan participant counts and industry ratios — not official headcount or reported revenue.
| Employees (modeled) | ≈13 · plan year 2024 |
|---|---|
| Est. annual revenue (modeled) | $3.6M |
| Retirement plan assets | $1.3M |
| Benefit plans | 401(k) plan on file |
| Filing history | 6 plan years filed, 2019–2024 |
| Sponsor EIN | 83-3699650 |
| Plan year | Employees (est.) | Participants | Plan assets | Revenue (est.) | 401(k) | |
|---|---|---|---|---|---|---|
| 2024 | ≈13 | 12 (12 active) | $1.3M | $3.6M | 401(k) | |
| 2023 | ≈12 | 11 (11 active) | $1M | $3.4M | 401(k) | |
| 2022 | ≈8 | 8 (7 active) | $734,458 | $2.4M | 401(k) | |
| 2021 | ≈8 | 7 (7 active) | $774,838 | $2.2M | 401(k) | |
| 2020 | ≈6 | 5 (5 active) | $595,194 | $1.5M | 401(k) | |
| 2019 | ≈6 | 5 (5 active) | $413,983 | $1.1M | 401(k) | |
Matched Form 5500 filing records:
| Plan | Plan year | Participants | EIN | |
|---|---|---|---|---|
| CORNERSTONE STRUCTURAL ENGINEERING EMPLOYEES 401(K) PLAN | — | — | — | |
| CORNERSTONE STRUCTURAL ENGINEERING EMPLOYEES 401(K) PLAN | — | — | — | |
| CORNERSTONE STRUCTURAL ENGINEERING EMPLOYEES 401(K) PLAN | — | — | — | |
| CORNERSTONE STRUCTURAL ENGINEERING EMPLOYEES 401(K) PLAN | — | — | — | |
| CORNERSTONE STRUCTURAL ENGINEERING EMPLOYEES 401(K) PLAN | — | — | — | |
| CORNERSTONE STRUCTURAL ASSOCIATES, INC. | — | — | — | |
Federal court records load when you reach this section.
Companies adjacent to Cornerstone Structural Engineering, Inc in the South Dakota Secretary of State register, in alphabetical order.
11 companies are registered at 2922 Fuller Ave NE, Suite 106, Grand Rapids — shared registered-office and agent addresses are common; a shared address alone does not link businesses.
Netstate aggregates public records from federal, state and municipal sources; records are matched to this company by its registered legal names. Latest source snapshot 2026-06-07. Document getpalm-companies/5798-3552-5636.