What Property Types Will Commercial Lenders Not Finance?

There is a particular kind of wasted month in commercial real estate. A borrower finds a building, gets a purchase agreement signed, assembles two years of returns, orders an appraisal, and three weeks into underwriting learns the property was never eligible. Not marginal. Not a pricing question. Ineligible on type.

That month is avoidable, because eligibility by property type is decided on day one and it is knowable on day one. It is also the single hardest thing to research, because almost nothing published about commercial lending is written from the exclusion side.

So this page is the exclusion side.

What is eligible, briefly, so the exclusions make sense

Eligible property types sit in two tiers, and the tier matters because it drives leverage.

Tier I is residential-weighted. Multi-family with five or more residential units. Mixed-use where more than 50% of gross income comes from the residential space. In both cases every residential unit must have a full and legal kitchen — a rule we will come back to, because it quietly disqualifies a category of building that looks like multifamily and is not.

Tier II is commercial-weighted: mixed-use where more than half of gross rental income comes from the commercial space, converted single-family residences zoned for commercial use, automotive, office including medical office without a surgical component, commercial condos, light industrial, retail and strip centers, mobile home parks, warehouse and traditional self-storage, bars and restaurants, and daycares.

Two carve-outs inside that list are worth naming now because they surprise people. Mobile home parks are eligible, but park-owned trailers and their income are excluded from value. Self-storage is eligible as traditional self-storage only, with no credit given to outside storage income.

The ineligible list

These property types are not eligible as the primary collateral:

The exception almost nobody knows about

Look again at the entries marked exception applies. Adult entertainment, churches and religious organizations, funeral homes, education, gambling, gun ranges.

This changes the answer for a whole class of real buildings, and it is the most commercially useful paragraph on this page.

Consider a strip center. Six units. One of them is a small church that took a storefront lease, or a driving school, or a martial arts academy that reads as education. Under a naive reading of the ineligible list, that building is dead. Under the actual rule, it is a straightforward Tier II strip center — provided that tenant contributes 25% or less of total property cash flow.

The test is income share, not square footage, and not tenant count. So the analysis is arithmetic you can do yourself before you ever submit. Take the property's total cash flow. Take the rent from the tenant whose use appears on the ineligible list. Divide. If the answer is at or under 25%, that tenant is not disqualifying.

Three things to hold onto.

It applies to Tier II properties. It applies to third-party tenants — an arm's-length tenant, not the borrower's own operating business. And it does not convert the property into a special-purpose building: everything else on this page still applies.

The second list: categories that fail regardless of type

The type list is not the whole test. There is a second and less-discussed set of exclusions that applies to the property itself, and a building can be a perfectly eligible type and still fail here.

Special use properties. Properties with limited utility and marketability other than their current use. Because of their specialized nature they are difficult or financially impractical to convert, and may carry zoning restrictions. Any property with a special use component is deemed ineligible unless it can be readily converted to standard retail, warehouse or office space with limited cost and a reasonable timeline — under 90 days. The examples given are schools, gas stations, theaters, event centers, pet grooming and boarding, and surgical centers.

That under-90-days conversion test is the whole rule, and it is worth internalising. The question is not "is this building unusual." It is "if the current operator disappeared, how quickly and cheaply does this become ordinary commercial space." A theater with fixed raked seating fails. A former pet boarding facility that is really a warehouse with kennels in it may not.

Unusual or unique design and construction with limited marketability, not homogenous with its surroundings. Geodesic domes, log cabins, earth-covered structures.

Health and safety problems that may endanger occupants.

Major building code violations.

Unusual functional or physical characteristics that severely limit marketability.

No permanent reinforced concrete foundation.

Improvements representing a material illegal use.

Four rules that cap your LTV before anyone reads your credit

A property can clear both lists and still have its leverage capped by a characteristic that has nothing to do with the borrower. These are the four that catch people, and none of them are widely published.

1. Commercial use in a residential zoning district — 50% maximum LTV

Properties with commercial uses located within a residential zoning district, operating under a special use permit or as defined by the municipality, are eligible for a maximum LTV of 50%. All other restrictions still apply.

This is the one that reshapes a deal quietly. Think of a converted house operating as a law office, a veterinary practice, or a daycare on a residential street with a special use permit from the town. The property is eligible. The business may be excellent. The leverage is half of value — which frequently means the transaction as the borrower structured it does not work, and they find out late.

If your property operates under a special use permit or a conditional use permit, establish that before you build a capital stack around it.

2. Rural per the appraiser — 60% maximum LTV

Properties that meet MSA requirements but are deemed rural by the appraiser are subject to a maximum LTV of 60%.

Read that carefully, because the trigger is unusual. The property already met the market requirements. What caps the leverage is the appraiser's characterisation of the location in a report that does not exist yet when you go under contract.

That makes this the least predictable item on this page and the one most worth asking about early. If the property sits outside a built-up area, at the edge of an MSA, or on acreage, treat 60% as a live possibility in your planning rather than a surprise at appraisal.

3. Single-user buildings at or above 25,000 square feet — special purpose

Single-user office, automotive, warehouse, retail or light industrial with 25,000 square feet or more of gross building area falls into the Special Purpose category rather than the ordinary tier treatment.

There is an important recent refinement here, added in the July 2026 update: multi-tenant properties may exceed 25,000 square feet, provided no individual tenant occupies 25,000 or more square feet of GBA.

So the size bar is not a property-size bar. It is a tenant-concentration bar. A 60,000 square foot multi-tenant flex building with eight tenants is not caught by this. The same 60,000 square feet leased to one occupant is.

4. Multi-family units must have full and legal kitchens

Also new in July 2026, and this one arrived alongside a genuine loosening: the previous minimum square footage per unit was removed, and in its place every unit must have a full and legal kitchen.

That is a better rule for most borrowers — small units are no longer disqualified by size alone — but it draws a sharp line under a specific kind of building. A property configured as rooms with shared cooking facilities is not multi-family for these purposes, regardless of how it is marketed, how many doors it has, or what the rent roll says. It is much closer to the single rooming house that appears on the ineligible list.

The same kitchen requirement applies to the residential units in a Tier I mixed-use property.

Two more conditions worth knowing while you are here

Restaurants, bars and daycares carry an operating history test. These are eligible property types, but the operating business — whether tenant-operated or owner-occupied — must demonstrate a minimum of three years of continuous operating history, either at the subject property or at another current or previous business location. Documentation to verify that history may be requested.

Investor properties with partial owner occupancy stay investor properties. A property that otherwise meets the investor definition but includes some borrower occupancy continues to be classified as an investor property — and in that case the standard investor experience requirement does not apply. That is a small mercy for a borrower who owns a mixed situation and would otherwise be measured against an experience bar.

How to check your property in about ten minutes

You can run most of this yourself before spending money on anything.

1. Name the primary use. Not the business name, the use. Then check it against the ineligible list above.

2. If it is on the list, check whether the exception applies. Is the property Tier II? Is that use a third-party tenant rather than the whole building? Is that tenant's share of total property cash flow 25% or less?

3. Run the conversion test. If the space is specialized, could it become ordinary retail, warehouse or office in under 90 days at limited cost? Be honest, and picture the fixtures.

4. Check the zoning. Commercial use sitting inside a residential district under a special use permit means 50% LTV. Find out now, from the municipality, not later from underwriting.

5. Ask about rural. If the location is at all marginal, plan for the possibility of a 60% cap.

6. Check tenant concentration. Any single tenant at 25,000 square feet or more changes the treatment.

7. For multi-family, verify every unit has a full legal kitchen. Count them.

None of that requires a lender, an appraiser, or an application. It requires a rent roll, a zoning answer, and twenty minutes.

What this page does not do

This is a collateral-eligibility page. It does not address credit, income documentation, debt service coverage, reserves, entity structure, appraisal outcomes, environmental review, or the pricing consequences of any of the above — all of which sit downstream of the property clearing these tests, and any of which can change a transaction on its own.

What it should do is stop you spending a month on a building that was never eligible, and stop you walking away from one that was — because the exception that would have made it work is not published anywhere else.

Guideline SBC 08/03/2026 · Reviewed August 30, 2026

Published August 31, 2026 · Updated August 31, 2026