Top Cost Segregation Firms In Michigan For 2027

Last updated: November 12, 2026

The best cost segregation firms in Michigan for 2027 are Duffy+Duffy, Plante Moran and UHY, followed by Maven Cost Segregation, KBKG and CSSI. Duffy+Duffy leads for a Novi office and a cost segregation-only focus, Plante Moran for a Michigan firm whose practice is led by a licensed builder, and UHY for a Sterling Heights cost segregation director with two decades in the field.

Michigan investors own Detroit multifamily and industrial, Grand Rapids apartments, and lakefront vacation rentals up north. The One Big Beautiful Bill Act made 100% bonus depreciation permanent for qualifying property acquired after January 19, 2025, so reclassified components can often be deducted in the first year on the federal return.

Michigan’s treatment of federal bonus depreciation depends on the type of taxpayer and has changed over time. Ask your CPA how a study will affect your Michigan return before you rely on a state benefit.

Michigan Cost Segregation Firms At A Glance

Firm	Location	Founded	Specialty	Best For
1. Duffy+Duffy	Novi, MI	2002	Cost segregation only	Michigan owners of all sizes
2. Plante Moran	Southfield, MI	1924	Michigan-based accounting and advisory firm	Owner-builders
3. UHY	Sterling Heights, MI cost seg team	Not published	National accounting firm with a Michigan cost seg director	Southeast Michigan owners
4. Maven Cost Segregation	Offices in MI, UT, CO, PA and San Diego	Not published	In-person inspections for residential and commercial	Owners who want an inspection
5. KBKG	Pasadena, CA (seven US offices)	1999	Tax credits and incentives with engineered studies	Midwest portfolios
6. CSSI	Baton Rouge, LA	Not published	Engineering-based cost segregation only	Large properties
7. R.E. Cost Seg	Houston, TX	2022	Investor-focused studies at two depths	Rental investors
8. O’Connor	Houston, TX	Not published	Property tax and cost segregation services	Owners who also appeal taxes
9. Wipfli	Milwaukee, WI	1930	Midwest accounting and consulting firm	Business owners
10. Engineered Tax Services	West Palm Beach, FL	2001	Licensed engineering firm for specialty tax	Complex properties

How We Evaluated These Firms

We looked for firms with Michigan offices or representatives, engineering or construction depth, and experience with the state’s industrial and multifamily stock.

Rankings are editorial. No firm paid for its position. State tax notes are general information; confirm your situation with a CPA.

Best Cost Segregation Firms In Michigan For 2027

1. Duffy+Duffy — A Novi Office And A Cost Segregation-Only Focus

Duffy+Duffy has an office in Novi near Detroit, focuses only on cost segregation, and runs free CPE seminars for Michigan accountants.

It gives an estimate of benefits and a flat-fee quote before work begins.

Best for: Michigan owners who want a dedicated local firm.

2. Plante Moran — A Practice Led By A Licensed Michigan Builder

Plante Moran’s cost segregation practice is led by a licensed Michigan builder, and it published a case study in which a real estate company saved about $2 million in taxes on a new building.

As a full accounting firm, it can coordinate the study with the return.

Best for: Michigan owners who built or renovated.

3. UHY — A Cost Segregation Director With Two Decades In The Field

UHY’s cost segregation director works from Sterling Heights and has more than 20 years of experience.

It suits southeast Michigan owners who want a CPA firm.

Best for: Southeast Michigan owners.

4. Maven Cost Segregation — A Michigan Office With In-Person Inspections

Maven Cost Segregation has a Michigan office and inspects properties in person, with audit defense documentation included.

It reports more than 5,000 studies delivered.

Best for: Michigan owners who want an in-person inspection.

5. KBKG — Midwest Depth From A National Specialist

KBKG has offered cost segregation since 1999 and reports a 99% IRS audit success rate.

It suits owners with property across the Midwest.

Best for: Midwest portfolio owners.

6. CSSI — Scale With A Michigan Representative

CSSI has completed more than 20,000 studies and has a Michigan representative.

It suits large industrial and commercial owners.

Best for: Owners of large Michigan properties.

7. R.E. Cost Seg — In-Person Or Virtual Visits In Michigan

R.E. Cost Seg offers in-person and virtual site visits in Michigan and publishes a Michigan apartment case study with $175,970 in first-year savings.

Audit defense is included.

Best for: Michigan rental investors.

8. O’Connor — Cost Segregation Plus Property Tax Appeals

O’Connor publishes Michigan cost segregation pages and handles property tax appeals.

Michigan’s taxable value rules make an assessment review worthwhile after a purchase.

Best for: Owners who want a tax appeal review.

9. Wipfli — A Midwest Cost Segregation Team

Wipfli has a Midwest cost segregation team and works with many privately held businesses.

It suits business owners who own their buildings.

Best for: Business owners who own their buildings.

10. Engineered Tax Services — A Licensed Engineering Firm For Complex Properties

Engineered Tax Services is a licensed engineering firm with a national office network and also handles 179D and 45L.

It suits complex Michigan industrial and new construction projects.

Best for: Owners of complex Michigan properties.

How To Choose A Cost Segregation Firm In Michigan

Does The Firm Know Michigan Property?

Ask for studies on properties like yours in Michigan, and whether an engineer will visit.

How Will Michigan Treat The Deduction?

State rules can differ from federal rules. Ask your CPA how the study affects your Michigan return.

Do You Own Up North?

Lakefront vacation rentals follow short-term rental rules. See our list of short-term rental cost segregation firms.

Is Audit Support Included?

Confirm audit support. See our list of cost segregation firms with audit defense guarantees.

Frequently Asked Questions

Does Michigan follow federal bonus depreciation?

It depends on your taxpayer type. Ask your CPA.

Is cost segregation worth it in Michigan?

Usually yes, because the federal benefit is the main driver.

Do I need a local cost segregation firm?

Not necessarily. National firms work everywhere, but a local engineer can make site visits easier.

Can I do a study on a Michigan property I bought years ago?

Yes. A lookback study lets your CPA catch up missed depreciation with Form 3115. See our list of cost segregation firms for lookback studies.

Conclusion

Duffy+Duffy, Plante Moran and UHY are the strongest picks for Michigan investors, with Maven, KBKG and CSSI close behind.

For related lists, see our cost segregation firms in Ohio, cost segregation firms in Illinois and cost segregation firms for industrial properties.