Compare 10 cost segregation Hawaii providers for 2027, from engineering specialists to flat-fee remote studies for Oahu, Maui, Kauai and Big Island rentals.
Hawaii investors own Waikiki condos, Maui vacation rentals, Kona coast homes and Honolulu commercial buildings, and cost segregation can speed up federal depreciation on all of them. This list is for owners and CPAs looking for a provider to run a Hawaii cost segregation study, whether you need cost segregation Honolulu investors can use for an Oahu condo or cost segregation Maui owners can use for a resort-area rental. If you are new to the topic, start with our guide on how cost segregation works.
We found no specialist cost segregation firm with a staffed office in Hawaii, so every provider here has a documented Hawaii track record instead: dedicated Hawaii pages, island coverage or Hawaii case studies. We say which for each. We looked at methodology, audit support and pricing transparency. For cost segregation Hawaii owners need to know one state rule: Hawaii does not adopt federal bonus depreciation under Section 168(k) (HRS 235-2.4(m)), so your Hawaii return needs its own depreciation schedule. Reclassified assets still use shorter regular recovery periods on the state return. Cost segregation does not change your general excise tax, transient accommodations tax or county property tax.
The federal rule that matters most in 2027: under the One Big Beautiful Bill Act, signed July 4, 2025, 100% bonus depreciation is permanent for qualifying property acquired and placed in service after January 19, 2025. Property acquired on or before that date stays on the old phase-down, which reaches 0% for property placed in service in 2027. Confirm how this applies to you with your CPA.
Hawaii Cost Segregation Firms At A Glance
Company
Headquarters
Best For
Standout
KBKG
Pasadena, CA (Honolulu service page)
Commercial and hospitality owners
Engineering studies since 1999, CCSP-designated principals
Cost Seg Smart
Los Angeles, CA (remote, Hawaii pages)
Condo and vacation rental investors
Published flat prices from $495, all four main islands
R.E. Cost Seg
Houston, TX (remote, Hawaii pages)
Rentals and small commercial
Published Hawaii short-term rental condo case study
ICS Tax
Minneapolis, MN
Owners wanting CCSP-reviewed reports
Covers all six main islands, Form 3115 support
The Ambrose Group
Jersey Village, TX
Resort, retail and commercial owners
MAI appraisers plus an in-house construction engineer
Seneca Cost Segregation
Albany, OR
Owners wanting state schedules built in
Separate federal and Hawaii depreciation schedules
Maven Cost Segregation
Offices in six mainland cities
Owners choosing between study tiers
CPA-led, modeling and detailed engineering options
Source Advisors
Arlington, TX
Larger commercial properties
Disposition and fixed asset review services
SMF Cost Segregation Advisors
Not published (remote)
Owners of 1 to 10 unit rentals
Hawaii page covering 11 island locations
Virtual Cost Segregation
Not published (remote)
Single STR owners wanting a fixed fee
$2,200 flat fee with no site visit
Best Cost Segregation Firms In Hawaii For 2027
1. KBKG — Engineering-Led Studies Since 1999 With A Honolulu Service Page
KBKG has performed cost segregation studies nationwide since 1999 and runs a dedicated Honolulu page. It does not list a Hawaii office; its brick and mortar offices are in Los Angeles, New York, Atlanta, Chicago, Dallas and Houston. Hawaii presence: documented service coverage.
The firm says Honolulu studies use the engineering approach and include site inspections, and that properties built, bought, expanded or remodeled since 1987 may qualify. Its principals listed on the page, including chairman Gian Pazzia, hold the CCSP designation, and its reports follow the IRS “13 Principal Elements of a Quality Cost Segregation Study.” It has studied properties from 10,000 square feet to more than one million.
That depth suits Hawaii hotels, retail centers and office buildings. For smaller properties, KBKG points owners to its self-guided CostSegregation.com software.
Best for: Hawaii commercial and hospitality owners who want an established, audit-focused engineering specialist.
2. Cost Seg Smart — Flat-Fee Remote Studies For Island Condos And Vacation Rentals
Cost Seg Smart is a Los Angeles provider that works remotely and has a Hawaii state page plus Honolulu and Maui pages. Its coverage names Waikiki, Kakaako and Ala Moana condos on Oahu; Wailea, Kihei, Kapalua and Lahaina on Maui; Kailua-Kona on the Big Island; and Princeville and Poipu on Kauai. Hawaii presence: documented service coverage, remote.
Published residential prices run from $495 for properties under $300,000 to $1,295 for $1 million to $1.5 million, with commercial and 2 to 4 unit properties from $995. Simple residential reports usually arrive in one to two business days. Each comes with a 40-plus page report, audit support and a CPA-Ready Guarantee. Its Hawaii page flags that state treatment of bonus depreciation can differ from federal and that county permitting affects short-term rental tax treatment.
Best for: Hawaii condo and vacation rental owners who want a fast, fixed-price study.
3. R.E. Cost Seg — Virtual Or In-Person Studies With A Hawaii Rental Case Study
R.E. Cost Seg reports more than 20,000 completed studies and has a Hawaii page listing Honolulu, Hilo and Pearl City. It publishes a Hawaii case study on a short-term rental condo bought for $807,250, and its Hawaii page notes that the state does not follow federal bonus depreciation. Hawaii presence: documented track record, remote.
Site visits run by high-definition video call by default, with in-person visits for larger properties. Fully Engineered Studies start at $2,320 for residential and $2,730 for commercial properties. A Rapid Report starts at $950 for smaller residential properties of up to four units that meet its basis limits. Both include written audit support.
Its asset list runs from short-term rentals and apartments to hotels, restaurants and shopping centers, so it covers most of what Hawaii investors buy.
Best for: Hawaii rental owners who want an engineered study with a virtual walkthrough.
4. ICS Tax — CCSP-Reviewed Studies Covering All Six Main Islands
ICS Tax is a specialty tax firm based in Minneapolis that has delivered tax benefits since 2016. Its Hawaii page says it serves Kauai, Oahu, Molokai, Lanai, Maui and the island of Hawaii, although its office directory lists only mainland locations. Hawaii presence: documented service coverage.
ICS says its deliverables are reviewed by in-house Certified Cost Segregation Professionals, a credential granted by the American Society of Cost Segregation Professionals. It offers free consultations and benefit estimates, includes audit support, and can draft Form 3115 for look-back studies on property you have owned for years.
The firm also handles 179D, 45L, R&D credits and property tax work, which helps Hawaii developers and commercial owners who want several incentives reviewed together.
Best for: Owners on any island who want a credentialed reviewer signing off on the study.
5. The Ambrose Group — Appraiser-Led Studies For Hawaii Resort And Commercial Property
The Ambrose Group was founded in 1994 and is based in Jersey Village, Texas, near Houston. It offers appraisal, property tax and cost segregation services, with cost segregation available in all 50 states, and runs a detailed Hawaii page. Hawaii presence: documented service coverage.
Its Hawaii page covers hospitality and resort property in Waikiki, Ka’anapali, Wailea, Kona, Poipu and Princeville, plus retail, medical office, downtown Honolulu office, agriculture and short-term rentals. The page notes that Hawaii decouples from federal bonus depreciation, so the state benefit comes from shorter regular recovery periods. Studies combine MAI-designated appraisers with an in-house construction engineer and follow the IRS Audit Techniques Guide. CPA-ready reports and audit support come at no extra charge, and fees are quoted after a free benefit analysis.
Best for: Owners of Hawaii hotels, retail and commercial buildings who value appraisal expertise.
Seneca Cost Segregation is an engineering firm based in Albany, Oregon. Its Hawaii page covers Oahu, Maui, the Big Island, Kauai, Molokai and Lanai, with virtual site visits as standard. Hawaii presence: documented service coverage, remote.
The useful detail for Hawaii owners is that Seneca says its reports include separate federal and Hawaii depreciation schedules, because the state does not conform to federal bonus depreciation. Studies are done by an in-house engineering team and peer reviewed, audit defense is included, and the firm coordinates directly with your CPA. Its Hawaii page puts typical fees for Hawaii investment properties at $5,000 to $15,000, depending on size and complexity.
Seneca covers short-term and vacation rentals, resort properties, multifamily and commercial buildings, and offers look-back studies for property placed in service as far back as 1987.
Best for: Hawaii owners whose CPA wants the state schedule delivered alongside the federal one.
Maven Cost Segregation Tax Advisors was founded by Sean Graham, CPA, and reports more than 5,000 studies delivered. Its offices are on the mainland, in Michigan, Utah, Colorado, Pennsylvania and California, and its Hawaii page includes a self-storage example. Hawaii presence: documented service coverage.
Maven offers two levels of study. Its Hawaii page lists Engineered Modeling Studies at about $850 to $1,300 and Detailed Engineering Studies at about $3,400 to $9,800. Detailed studies involve a physical inspection, and reports are delivered within 30 days of the site visit with audit defense documentation included. The firm also prepares Form 3115.
The Hawaii page notes that investors need separate federal and state schedules, and it names high-value residential and resort properties, self-storage and island developments as good candidates.
Best for: Hawaii owners who want to choose between a lower-cost model and a full engineering study.
8. Source Advisors — Specialty Tax Firm With Disposition And Fixed Asset Reviews
Source Advisors is a specialty tax consultancy in Arlington, Texas, citing more than 40 years of experience. Its Hawaii page says it serves property throughout the state; it has no Hawaii office. Hawaii presence: documented service coverage.
The firm offers a standard cost segregation study, an enhanced study that breaks out building systems likely to be replaced, a disposition study for assets removed from service, and a fixed asset review to correct past depreciation. Its team includes architects, professional engineers, CPAs and LEED-certified professionals. It suggests $500,000 or more in capitalized costs as a good starting point.
The disposition and enhanced studies are useful for older Hawaii hotels and commercial buildings that go through frequent renovation, where writing off replaced components adds to the benefit.
Best for: Hawaii commercial owners with $500,000 or more in building or renovation costs.
SMF Cost Segregation Advisors focuses only on smaller rentals: single-family homes, duplexes to fourplexes and small apartment buildings of about 1 to 10 units, plus short-term rentals. Its Hawaii page lists about 11 locations, including Honolulu, Waikiki, Pearl City, Hilo, Kailua-Kona, Kihei, Wailea and Princeville. Hawaii presence: documented service coverage, remote.
The firm describes engineering-based, audit-ready reports. It does not publish a standard price, but its FAQ gives an example of roughly $1,750 to $2,750 for a single-family rental with a $300,000 building basis, and it promises a free proposal within 24 hours. The Hawaii page also notes that the state does not conform to federal bonus depreciation, so your CPA will keep a separate state schedule.
It does not publish its headquarters or team credentials, so ask who prepares and signs the report.
Best for: Owners of one to ten unit Hawaii rentals.
Virtual Cost Segregation LLC sells online cost segregation studies for residential and short-term rental owners and has published a guide for Hawaii short-term rental owners. Hawaii presence: documented service coverage, remote.
Its pricing is simple: $2,200 per property, with 10% off for portfolios of three or more. Studies are engineering-based, need no site visit, and are delivered three to five business days after documents arrive. Audit support is included. The Hawaii guide points out that land often makes up a larger share of purchase price in Hawaii than on the mainland, which lowers the depreciable base, and that the general excise and transient accommodations taxes are separate from federal depreciation.
The site does not name its leadership, address or staff credentials, so it suits owners comfortable with a document-only process.
Best for: Single Hawaii vacation rental owners who want one fixed fee and a quick turnaround.
How To Choose A Cost Segregation Firm In Hawaii
Can The Firm Handle Hawaii’s State Schedule?
Because Hawaii does not adopt federal bonus depreciation, you need a federal schedule and a separate Hawaii schedule. Ask whether the provider delivers both or whether your CPA will build the state version from the study.
Is A Virtual Walkthrough Enough?
No provider on this list has a Hawaii office, so most inspections happen by video or through documents. That works well for condos and single rentals. For a large resort or commercial building, ask whether the firm will send someone on site and what that adds to the fee.
High land values in Hawaii can shrink the depreciable building basis, which lowers the benefit. Ask for a free estimate first, and compare quotes on scope, audit support and turnaround as well as price.
Frequently Asked Questions
Does Hawaii Follow Federal Bonus Depreciation?
No. Hawaii does not adopt the Section 168(k) bonus depreciation rules, so the year-one bonus deduction applies on your federal return only. Reclassified assets still depreciate faster on the Hawaii return under regular recovery periods.
Does Cost Segregation Reduce General Excise Or Transient Accommodations Tax?
No. Cost segregation affects income tax depreciation. General excise tax, transient accommodations tax and county property taxes are calculated separately.
Does 100% Bonus Depreciation Apply In 2027?
At the federal level, qualifying property acquired and placed in service after January 19, 2025 is eligible for permanent 100% bonus depreciation. Property acquired earlier follows the old phase-down, which is 0% for property placed in service in 2027.
Can A Hawaii Vacation Rental Offset Other Income?
Sometimes. Losses from a short-term rental with short average stays can be non-passive if you materially participate, but county permitting and your own hours matter. Read our guide to the short-term rental tax loophole and confirm with your CPA.
Conclusion
Hawaii owners work with mainland providers, so the choice comes down to method, state schedules and price. KBKG, ICS Tax, The Ambrose Group and Source Advisors bring engineering and commercial depth, Seneca and Maven build in the Hawaii schedule question, and Cost Seg Smart, R.E. Cost Seg, SMF and Virtual Cost Segregation offer lower-cost options for condos and vacation rentals. Ask for an estimate and talk to your CPA before you commit. For another western market, see our list of cost segregation firms in Arizona.
This article is general information, not tax or legal advice.
