Top Cost Segregation Firms For Single-Family Rentals In 2027

Compare 10 firms offering cost segregation for single family homes in 2027, with flat-fee pricing, turnaround times, audit support and what each one suits.

Cost segregation for single family homes used to be hard to justify. Traditional engineering studies were priced for apartment complexes and office buildings, and a $5,000 fee could eat most of the benefit on a $400,000 rental. That has changed. A group of firms now prices residential studies in the hundreds or low thousands of dollars, and several deliver in days rather than weeks.

This list compares single family rental cost segregation providers for owners of single-family rentals, small portfolios and the CPAs who advise them. We looked at published pricing for 1 to 4 unit properties, turnaround, whether an engineer or specialist reviews the work, what audit support is included, and whether Form 3115 look-back studies are handled. Every firm below publishes residential pricing or a residential service on its own site. If you are new to the topic, start with our guide to cost segregation for residential rental property.

The key rule for 2027: the One Big Beautiful Bill Act, signed July 4, 2025, permanently restored 100% bonus depreciation for qualifying property acquired after January 19, 2025. Components a study moves into 5, 7 and 15 year classes can often be deducted in the first year, instead of over 27.5 years. Property bought under a binding contract signed before January 20, 2025 stays on the older phase-down schedule. Confirm how this applies to your return with your CPA.

Single-Family Rental Cost Segregation At A Glance

Company	Headquarters	Best For	Standout
R.E. Cost Seg	Not published (serves all 50 states)	Owners who want a choice of depth	Rapid Report from $950 or engineered study with a video inspection
Cost Seg Smart	Los Angeles, California	Price-sensitive owners who want speed	Studies from $495, most residential reports in 1 to 2 business days
KBKG	Offices in Los Angeles, New York, Atlanta, Chicago, Dallas, Detroit and Houston	Owners and CPAs who want a large firm behind the report	Self-guided reports plus full engineered studies, in business since 1999
WeCostSeg	Not published	Owners who want audit defense included	Five years of audit defense on every tier
Cost Seg EZ	Princeton, New Jersey	Owners who want to start cheap and upgrade	DIY, engineer-reviewed and fully engineered tiers
Virtual Cost Segregation	Not published	Owners who want an engineered study with no site visit	$2,200 flat fee, 3 to 5 business day delivery
CostSegRx	Sarasota, Florida	Owners who want engineer and accountant review	Residential studies from $895 with Form 3115 support
SMF Cost Segregation Advisors	Not published	BRRRR investors and small multifamily owners	Focused on 1 to 10 unit residential properties
O’Connor Cost Segregation	Not published	Owners who want a study warranty	Studies warrantied for the duration of ownership
Engineered Tax Services	West Palm Beach, Florida	Owners who also need other incentives	Licensed engineering firm with remote residential studies

Best Cost Segregation Firms For Single-Family Rentals In 2027

1. R.E. Cost Seg — Rapid Reports And Video-Inspected Engineered Studies

R.E. Cost Seg offers two clear paths for single-family owners. The Rapid Report starts at $950 for smaller residential properties that fit its size and cost limits, uses an online questionnaire and your documents, and is delivered in about 5 business days. The Fully Engineered Study starts at $2,320 for residential property and includes a 30 to 60 minute virtual inspection, where someone at the property walks the team through on a smartphone.

That two-tier setup suits investors who own a mix of modest and higher-value homes. A starter rental can go through the faster report, while a renovated or higher-basis property can get the deeper study. In-person visits are available for an extra fee. Audit support, covering written responses on methodology and classifications, is included at no added charge, though it does not include IRS representation.

Best for: Owners with several single-family rentals who want one provider with both a budget and an engineered option.

2. Cost Seg Smart — Flat-Fee Studies From $495 For Residential Rentals

Cost Seg Smart is a Los Angeles provider that prices residential studies by purchase price, starting at $495 for single-family homes, condos and short-term rentals under $300,000, and $895 between $300,000 and $700,000. Most residential studies are delivered in 1 to 2 business days, with a 24-hour rush available for $495.

The work is mostly remote, built from your documents and public records, with a video walkthrough or in-person visit added where it is needed. Each study comes as a 40-plus page CPA-ready PDF and an Excel fixed-asset file, with unlimited revisions to the original study and lifetime written audit support. Renovations under $100,000 are included in the base fee. Form 3115 preparation is a separate add-on, and audit support covers written answers rather than IRS representation.

Portfolio discounts run from 5% on two studies to 15% on five or more, which helps owners closing on several homes in a year.

Best for: Single-family investors who want a low published price and a fast, CPA-ready report.

3. KBKG — Self-Guided Reports Backed By A Firm Founded In 1999

KBKG is a national specialty tax firm established in 1999, with offices in Los Angeles, New York, Atlanta, Chicago, Dallas, Detroit and Houston. Its cost segregation team includes CCSP-credentialed principals, and it runs full engineered studies that can include a physical inspection.

For single-family owners, the more relevant option is its self-guided software at CostSegregation.com, first launched in 2016 as the Residential Cost Segregator. It covers condos, townhomes, single-family homes, small multifamily and ADUs up to $1.5 million in building basis. Residential pricing is listed at $495 for a $750,000 tax basis, you can try it free and pay after seeing the results, and every report includes audit support. Properties above the software limit go to KBKG’s professional services team.

Best for: Owners and CPAs who want a low-cost report with an established firm behind it, and an upgrade path for larger properties.

4. WeCostSeg — Tiered Residential Studies With Five Years Of Audit Defense

WeCostSeg offers three tiers. The Rapid Report starts at $795 for residential property under $800,000 of depreciable basis and is engineer-reviewed, with delivery in 5 to 10 business days. The Fully Engineered Residential study starts at $2,495 for properties up to $2 million of basis, includes an engineer-signed report and Form 3115 preparation for look-back studies, and takes 2 to 3 weeks.

What separates it from several low-cost providers is that five years of audit defense is included on every tier at no extra charge. The analysis can be virtual or in-person depending on the tier, and the firm lists single-family rentals, duplex to fourplex, condos and short-term rentals among the 14 property types it covers. It is a younger, founder-led company, so owners who want a long track record may prefer an older firm.

Best for: Owners who want audit defense bundled in without paying for a full engineered study.

5. Cost Seg EZ — DIY, Engineer-Reviewed And Fully Engineered Tiers

Cost Seg EZ is a sister brand of MVO Cost Segregation, based in Princeton, New Jersey, and says it has completed studies in all 50 states over the last 20 years. Its DIY tier costs $595 and generates a study instantly for residential properties (excluding condos) under $1 million with renovations under $10,000. The Engineer Reviewed tier is $895 with a 3 to 5 business day turnaround and accepts renovations up to $100,000.

For more complex homes, the Fully Engineered study starts at $2,500, takes 3 to 4 weeks and includes a virtual or in-person site inspection. Audit protection is a $195 add-on on the two lower tiers and is included in the engineered tier. The ladder makes it easy to match the spend to the property.

Best for: Owners of simple single-family homes who want to start at a low price and upgrade only if the property needs it.

6. Virtual Cost Segregation — $2,200 Flat-Fee Engineered Studies With No Site Visit

Virtual Cost Segregation charges a flat $2,200 per study, with a 10% discount for three or more properties. The process is completely virtual: you send documents and photos after booking, and a US-based engineering team builds the study using cost sources including RSMeans and Craftsman. Reports arrive in 3 to 5 business days.

Several extras are included in the fee: audit support, CPA support, Form 3115 catch-up filings, county assessor land-value lookups, renovation invoice review and free revisions for documents sent within a week of delivery. It covers single-family rentals, condos, townhomes, short-term rentals and multifamily. The flat price is higher than the budget tiers on this list, but it buys a fully engineered remote study rather than a model-based report.

Best for: Owners of higher-basis single-family homes who want an engineered study with predictable all-in pricing.

7. CostSegRx — Engineer-Prepared Residential Studies From $895

CostSegRx lists residential studies starting at $895, with pricing based on scope of work, and custom quotes for multifamily and commercial property. Studies are completed by its engineers and then reviewed by its accounting team before delivery.

Every pricing tier includes audit support, Form 3115 and 481(a) support, and report revision support. That makes it a practical choice for owners who bought a rental in an earlier year and want to catch up missed depreciation through a change in accounting method. The firm serves residential and commercial properties across the United States, and its listed address is in Sarasota, Florida.

Best for: Owners who want engineer preparation, accountant review and look-back support at a residential price point.

8. SMF Cost Segregation Advisors — Studies Built For 1 To 10 Unit Residential Investors

SMF Cost Segregation Advisors focuses on smaller residential property: single-family rentals, duplex to fourplex, small multifamily up to 10 units, short-term rentals and Airbnb properties. Its site speaks directly to BRRRR investors and owners pursuing Real Estate Professional status, two groups that often get the most from accelerated depreciation.

The firm offers a savings calculator, a qualification quiz and free estimates before you commit, along with case studies and a resource center. Its studies reclassify components from 27.5 or 39 year property into 5, 7 and 15 year classes. Pricing is quoted rather than published on its homepage, so request an estimate to compare it with the flat-fee providers above.

Best for: BRRRR and small-portfolio investors who want a provider that works only in their property size range.

9. O’Connor Cost Segregation — Ownership-Length Warranty On Every Study

O’Connor Cost Segregation runs studies for residential, commercial and industrial property and has a dedicated single-family rental service and calculator options for houses and condos. Its technical team includes state-licensed appraisers, and it says its calculator draws on data from more than 20,000 cost segregation studies.

The standout is the warranty. Studies are warrantied for as long as you own the property, and if the IRS raises questions the firm defends the study at no added charge. It also offers a free preliminary analysis and quote, typically emailed within one business day, and catch-up studies for depreciation missed in earlier years. Pricing for single-family homes is quoted rather than listed.

Best for: Long-term holders who value a study warranty that lasts as long as they own the home.

10. Engineered Tax Services — Licensed Engineering Firm With Remote Residential Studies

Engineered Tax Services describes itself as a licensed engineering firm specializing in tax strategy, with a team of engineers, CPAs and tax attorneys. It is headquartered in West Palm Beach, Florida, with offices in Dallas, Charlotte, Las Vegas, Los Angeles, New York, Phoenix and Raleigh, and cites more than 25 years in practice.

Its case studies include a single-family residence and a short-term rental, and it runs remote studies for smaller and less complex properties using client-supplied photos, video walkthroughs and digital documents. ETS is a bigger operation than most firms on this list and also works on R&D credits, 1031 exchange services and energy incentives, which helps owners whose real estate sits alongside an operating business.

Best for: Owners who want a large engineering-led firm and may need other tax incentive work later.

How To Choose A Cost Segregation Firm For Single-Family Rentals

Does The Fee Make Sense For Your Basis?

Start with the depreciable building basis, not the purchase price, since land is not depreciable. On a modest home, a $500 to $900 report may be the only option that pays for itself. On a renovated or higher-value property, an engineered study in the $2,000 to $2,500 range can be worth the extra cost. Our guide to what a cost segregation study costs walks through typical ranges.

Who Reviews The Work?

Ask whether an engineer, a cost specialist or only software produces the final classifications. A fully automated report can be fine for a simple home, but a property with major renovations, an ADU or unusual site work benefits from human review.

What Does Audit Support Actually Cover?

Most providers include written support explaining their methodology. Few include IRS representation. Read the terms, check whether audit support costs extra, and confirm how long it lasts.

Can They Handle A Look-Back Study?

If you placed the rental in service in an earlier year, you may be able to claim missed depreciation through Form 3115. Check whether the firm prepares the 481(a) adjustment or whether your CPA will need to.

Will Your CPA Accept The Report?

Send a sample report to your CPA before you buy. The deliverable should include a clear asset schedule your preparer can enter without rework. If you are weighing a short-term rental strategy, ask your CPA how the short-term rental rules affect your plan.

Frequently Asked Questions

Is Cost Segregation Worth It For A Single-Family Home?

A cost segregation study for rental property often is worth it when the building basis is a few hundred thousand dollars or more and the owner can use the deductions. Low-cost residential cost segregation has made smaller properties viable. Whether you benefit depends on passive activity rules, your income and your holding period, so run the numbers with your CPA.

How Much Of A Single-Family Rental Can Be Reclassified?

It varies with the property. Flooring, appliances, cabinetry, some electrical and plumbing serving equipment, and land improvements such as driveways, fencing and landscaping are common candidates for shorter lives. Each study should document its own percentages.

Does 100% Bonus Depreciation Apply To Rentals Bought In 2026 Or 2027?

Under the One Big Beautiful Bill Act, 100% bonus depreciation is permanent for qualifying property acquired after January 19, 2025, so it generally applies to purchases in 2026 and 2027. Your CPA should confirm the acquisition date rules for your property.

What Happens When I Sell The Property?

Accelerated depreciation can be recaptured on sale, and some of it may be taxed at ordinary income rates. A 1031 exchange can defer that. Plan the exit with your tax advisor before you file the study.

Conclusion

Single-family investors now have real choices: model-based reports for a few hundred dollars, remote engineered studies around $2,000 to $2,500, and established firms that offer both. Match the study depth to the property, confirm what audit support includes, and make sure your CPA can use the deliverable. For larger residential holdings, see our list of cost segregation firms for multifamily investors, and for providers that work entirely online, see our remote cost segregation study providers.

This article is general information, not tax or legal advice.