How to Buy a Mountain Cabin or Vacation Rental in San Bernardino County: Big Bear, Lake Arrowhead and the Rules Behind the Rent

Winter is getting close in the San Bernardino Mountains. Big Bear Mountain Resort is already selling 2026/27 lift tickets with a start date of November 21, 2026, which it calls the earliest possible opening day, not a confirmed one, and the rest of its lift tickets go on sale November 2. Every fall, that countdown brings the same question to our office: "Should I buy a cabin up the hill, and can I rent it out when I'm not using it?"

It can work, but the mountain market runs on its own rules. Homes sit longer than in the valley, the short-term rental market has changed quickly, and the permit you need depends on which side of a ZIP code line the cabin sits. AirDNA's Big Bear Lake page, updated October 27, 2026 with data through September, shows 2,618 active short-term rental listings, down 41.2% from a year earlier, with average annual revenue of $45.1K (up 18.9%), 36% occupancy and a $397 average daily rate (down 17.6%). Fewer listings, more revenue per listing, but lower nightly rates. That's a market where careful buyers who run the numbers honestly can still do well, and buyers who rely on a seller's rosy rental projection can get hurt.

This guide walks through the numbers, the permit rules for the City of Big Bear Lake and for the unincorporated county, financing, and a step-by-step plan.

The market snapshot (September 2026, Realtor.com)

Countywide, San Bernardino County's median listing price was $531,944 in September 2026, essentially flat (down 0.1%) from a year earlier. The median home sat 65 days on the market, 18.1% of listings had a price cut (Realtor.com's price_reduced_share), and there were 6,141 active listings.

The mountain ZIP codes move more slowly than the county as a whole:

Source: Realtor.com Residential Data, county and ZIP core metrics, September 2026. Small ZIP codes have few listings, so treat month-to-month swings with caution.

What this tells a buyer: in most mountain ZIP codes the typical listing takes 100 days or more to find a buyer, compared with 65 days countywide. Long market times mean sellers are often more open to negotiating on price, repairs and closing costs, especially on homes that have been listed since summer.

The payment math at today's rates

Freddie Mac's Primary Mortgage Market Survey put the average 30-year fixed rate at 7.32% on October 22, 2026. Here is what principal and interest (P&I) look like at that rate on a 30-year loan:

These are P&I only. Add property tax (California's base rate is 1% of the purchase price under Proposition 13, plus any local voter-approved charges and special assessments shown on the tax bill), homeowners insurance, HOA dues if any, utilities, snow removal and maintenance. On a $599,000 purchase, the 1% base tax alone is about $499 a month.

The formula, if you want to run your own price: monthly P&I = L × r ÷ (1 − (1 + r)^−360), where L is the loan amount and r is the annual rate divided by 12 (0.0732 ÷ 12 = 0.0061).

Rule number one: find out who regulates the address

The single most important question for a would-be rental owner is which government controls the parcel.

Inside the City of Big Bear Lake (ZIP 92315). The city runs its own Vacation Rental Program under Ordinance 2023-518 (Municipal Code Chapter 4.01). According to the city:

• You apply online with proof of ownership (a recorded deed or final closing statement), any trust or LLC documents showing everyone involved, and proof of liability insurance, all as PDFs. Missing documents mean the application is denied and you start over.
• The registration fee is $635, and the license runs one year from the date you pay. Renewal is required every year.
• An inspection follows. The city says registration and inspection can take 4 to 6 weeks, and you may not rent the home during that period.
• Owners and agents (check-in, 24/7 response and management staff) must pass an annual 25-question certification exam with a score of 100%, unless the owner hires a full-service management company and never rents the property personally.
• The license must be printed and posted in the home.
• You collect and remit 13% of gross receipts every month (Transient Occupancy Tax plus the Tourism Business Improvement District assessment), and you must file a report every month even if you had no income.
• The ordinance's eligibility table limits what can be rented. For example, on a lot with a house and an accessory dwelling unit (ADU), only the main house is eligible; the ADU is not.

Outside city limits (Big Bear City, Fawnskin, Sugarloaf, Lake Arrowhead, Running Springs, Twin Peaks, Crestline and other unincorporated areas). San Bernardino County regulates short-term rentals of 30 days or less in its Mountain and Desert regions under County Code Chapter 84.28. According to the county's Short-Term Rental program:

• You cannot apply until you own the home. The county verifies ownership with a recorded grant deed, so there is no way to line up a permit during escrow.
• Fees effective July 1, 2026: a new application costs $1,144 (a $600 application fee, a $285 permit fee and a $259 surrounding-property-owner notification fee). A renewal with no changes is $550. The county offers a one-time $150 credit for installing an outdoor noise monitoring device.
• After staff review (about one week on average) and an exterior inspection, neighbors get a notice and 20 calendar days to comment. The permit is issued the first business day after a 30-day appeal period. Plan on at least several weeks to a few months with no rental income after closing.
• The permit and the county's Good Neighbor brochure must be posted inside the home, and the owner must provide a 24-hour contact for complaints. Guests can be cited for noise, parking and nuisance violations, and the county says penalties could include $1,000.
• A change in ownership that creates a new grant deed, even moving the home into your own trust, requires a new application. The home can keep operating if you submit it within 30 days.
• Guests in unincorporated areas pay a 7% Transient Occupancy Tax on rent (County Code 14.0203), and operators file quarterly returns with the County Tax Collector, even if no tax is due. Booking platforms sometimes collect it for you, but you are responsible for any platform that doesn't.

Buying an existing rental does not transfer the permit. In both systems, a new owner has to apply in their own name. A seller's listing that says "turnkey rental" or "great rental history" is not a permit you inherit.

How to buy a mountain cabin, step by step

Step 1: Decide what the home is for

Be honest about the mix: a personal getaway, a second home you rent sometimes, or an investment property you rarely use. The answer changes your loan, your taxes and how you judge the numbers.

How to do it:

• Write down how many weeks a year you will actually use the home, and which weeks (holidays and ski weekends are also the highest-earning rental weeks).
• If you need rental income to afford the home, treat it as an investment purchase and underwrite it that way from day one.

Step 2: Choose the right loan

Fannie Mae's guidelines say a second home must be a one-unit home you occupy for some part of the year, suitable for year-round use, and under your exclusive control, not controlled by a management firm. If a lender finds rental income on a second home, the loan can still be a second-home loan, but that rental income can't be used to help you qualify. If you plan to rely on rental income, expect the loan to be treated as an investment property, which usually means a larger down payment and a higher rate.

How to do it:

• Tell your lender up front exactly how you plan to use the home. Misstating occupancy on a mortgage application is a serious problem.
• Ask for quotes as both a second home and an investment property so you can see the difference in rate, down payment and reserves.
• Ask how many months of reserves they want for each option; second-home and investment loans often require more.

Step 3: Verify the jurisdiction and permit history before you write an offer

How to do it:

• Confirm whether the address is in the City of Big Bear Lake or unincorporated county. The city says it will confirm a property's location if you ask, at (909) 866-5831.
• Check the city's approved vacation rental list (updated September 21, 2026) or the county's Permitted STR Map to see whether the home is currently permitted, and for what occupancy.
• Ask the seller for the current permit, the occupancy and parking limits on it, and any complaints, citations or violations.
• For a city home, read the ordinance's eligibility table. A guest house with a kitchen or an ADU can change what is rentable.

Step 4: Underwrite the rental with real numbers, not a seller's brochure

How to do it:

• Get the seller's actual booking platform statements and tax returns (TOT reports) for the last 24 months, not a projection.
• Compare them with independent market data. For Big Bear Lake, AirDNA reports average annual revenue of $45.1K per listing, or about $3,758 a month. That is close to the $3,292 P&I alone on a Big Bear Lake median-priced home with 20% down, before taxes, insurance, utilities, cleaning, supplies, platform fees, management and repairs.
• Build a monthly budget with every line: P&I, property tax, insurance, HOA, utilities, internet, snow removal, cleaning, management, maintenance, furniture replacement, permit fees and certification time.
• Budget for the months with no income while the permit is pending, since the county won't accept an application until after closing.
• Run a "bad year" case with lower occupancy. Rental income in the mountains is seasonal and depends on snow.

Step 5: Inspect for mountain-specific issues

How to do it:

• Get a general home inspection plus specialists as needed: roof and snow load, decks and stairs, chimney and wood stove, heating system, and frozen-pipe history.
• Ask whether the home is on sewer or septic and get the system inspected if it's septic.
• Check the CAL FIRE Fire Hazard Severity Zone map for the address and get insurance quotes before you remove your contingencies. Our recent guide to insuring a home in wildfire country covers the California FAIR Plan, its 29.1% average rate increase that took effect October 15, 2026, and the discounts available for home hardening.
• Ask the insurer whether short-term renting is covered. A standard homeowners policy may not cover it, and the City of Big Bear Lake requires proof of liability coverage.
• Confirm that the on-site parking matches what the permit allows.

Step 6: Negotiate with the market time on your side

How to do it:

• Look up how long the home has been listed and whether the price has been cut. In most mountain ZIP codes the median listing has been on the market 100 days or more.
• Ask for repair credits based on inspection findings, or for the seller to pay part of your closing costs or a rate buydown.
• If furniture is included, list it in the contract and don't pay for it as if it were part of the home's value.
• Keep your inspection, appraisal, insurance and loan contingencies until you have the answers from Steps 3 through 5.

Step 7: After closing, get legal before you list

How to do it:

• In the city, apply with your deed, entity documents and insurance, pay the $635 fee, pass the inspection and the certification exam, and post the license before taking a booking.
• In the county, apply through the EZ Online Permitting system once your grant deed is recorded, submit your Transient Occupancy Tax certification, and wait for the permit to issue after the 30-day appeal period.
• Set up your tax filings: monthly 13% reports in the city, quarterly 7% returns in the county.
• Hire a local manager or 24/7 contact who can respond to complaints quickly; both the city and county require it.

Mistakes to avoid

• Assuming the seller's permit transfers to you. It doesn't.
• Using a seller's "projected revenue" instead of actual statements and TOT returns.
• Taking out a second-home loan when you really need the rental income to afford the home.
• Booking guests before the permit is issued. In the city, you can't rent during the 4- to 6-week registration and inspection process.
• Moving the home into a trust or LLC after closing without filing a new county application within 30 days.
• Skipping the insurance quote until after removing contingencies.

Quick checklist

• City of Big Bear Lake or unincorporated county confirmed
• Current permit, occupancy and parking limits, and complaint history reviewed
• 24 months of real rental statements and TOT returns reviewed
• Loan quoted as both a second home and an investment property
• Full monthly budget with a bad-year case
• Insurance quotes, including short-term rental coverage, in hand
• Septic, roof, snow load, heating and deck inspections done
• Plan and budget for the permit waiting period after closing

What this means day to day

For a family that wants a weekend place, the mountains are one of the few places in Southern California where a detached home still lists below the county median. Running Springs and Sugarloaf medians are well under $400,000. For an investor, the market is less forgiving than it was a few years ago. Lower nightly rates and strict permit rules reward owners who treat a cabin as a real small business, keep their neighbors happy and buy at the right price. Either way, the long days on market give prepared buyers room to negotiate this winter.

If you're thinking about a cabin in Big Bear, Lake Arrowhead or anywhere in the San Bernardino Mountains, Choice of America can help you check permits, run the numbers and negotiate. Call or text 833-THIS-BROKER (833-842-7465), visit Choice of America, or see our San Bernardino County real estate page.

Dr. Hamid Rowshan, Choice of America. DRE #02004794. Company DRE #02240008.

This article is general information, not legal, tax, lending or insurance advice. Rules, fees and rates change; confirm current requirements with the City of Big Bear Lake, San Bernardino County, your lender, your insurer and a tax professional before you buy.

Sources:

• Realtor.com Residential Data, county core metrics (September 2026): https://econdata.s3-us-west-2.amazonaws.com/Reports/Core/RDC_Inventory_Core_Metrics_County.csv
• Realtor.com Residential Data, ZIP core metrics (September 2026): https://econdata.s3-us-west-2.amazonaws.com/Reports/Core/RDC_Inventory_Core_Metrics_Zip.csv
• Freddie Mac Primary Mortgage Market Survey via FRED, MORTGAGE30US (7.32% on Oct 22, 2026): https://fred.stlouisfed.org/series/MORTGAGE30US
• Big Bear Mountain Resort, hours and 26/27 opening information: https://www.bigbearmountainresort.com/hours
• Big Bear Mountain Resort, lift tickets: https://www.bigbearmountainresort.com/ski-and-snowboard/lift-tickets
• AirDNA, Big Bear Lake short-term rental market data (updated Oct 27, 2026): https://www.airdna.co/vacation-rental-data/app/us/california/big-bear-lake/overview
• City of Big Bear Lake, Vacation Rental Program: https://bigbearlake.gov/index.php/en/departments/administrative-services-2/transient-private-home-rental-tphr-program
• Big Bear Lake Municipal Code Chapter 4.01, Vacation Rentals: https://library.municode.com/ca/big_bear_lake/codes/code_of_ordinances?nodeId=MUCO_TIT4VIRVUSTO_CH4.01VARE
• San Bernardino County Short-Term Rentals, Getting Started and fees: https://str.sbcounty.gov/getting-started/
• San Bernardino County Short-Term Rentals program home: https://str.sbcounty.gov/
• San Bernardino County Code Chapter 84.28, Short-Term Residential Rentals: https://codelibrary.amlegal.com/codes/sanbernardino/latest/sanberncty_ca/0-0-0-172387
• San Bernardino County Code 14.0203, Uniform Transient Occupancy Tax: https://codelibrary.amlegal.com/codes/sanbernardino/latest/sanberncty_ca/0-0-0-150741
• San Bernardino County TOT quarterly return form: https://sanbern-prod.s3.amazonaws.com/uploads/SBCounty_TOTReturnForm.pdf
• Fannie Mae Selling Guide B2-1.1-01, Occupancy Types: https://selling-guide.fanniemae.com/sel/b2-1.1-01/occupancy-types