This is an estimate for planning. It is not a quote, an appraisal, a loan offer, or tax or legal advice, and Rudy is a real estate agent, not a lender, attorney or tax professional.
The four paths in plain English
Sell first
List and close on the Rancho Del Rey house before buying. With the sale money in hand you shop on known numbers, staying put through a rent-back for the first few weeks and renting after that if the search runs long.
When owners often choose it: Sellers whose next purchase relies on this home’s equity, or who simply prefer to know the exact figure first.
Tradeoffs: Weeks in between can mean paying rent and moving twice, once out of the house and again into the next one.
Same-day closings
Once your buyer has signed off on inspections, appraisal and loan, you make a clean offer elsewhere and both escrows record on one day, the sale paying for the purchase.
When owners often choose it: Anyone who would rather pack once and skip rent, provided the buyer is flexible about move-in.
Tradeoffs: The sale escrow stretches out to fit, and a hiccup in either deal pauses both of them.
Contingent offer
You make an offer on the next home that only goes through if this one sells, using the COP addendum from C.A.R., and both close at the same time.
When owners often choose it: Owners who spot the right place first, when the other seller is comfortable giving them time to sell.
Tradeoffs: Not every seller agrees, and a competing buyer without that condition may be preferred. How long you get and whether the seller keeps showing the home are both negotiated.
Buy first with equity
A line of credit or a bridge loan against the current house covers the down payment, so you can buy and move first, then put the old house on the market. Its sale clears the equity loan.
When owners often choose it: Homeowners with plenty of equity who want a single move and room to repaint, repair or declutter after moving out.
Tradeoffs: You pay two mortgages for a while, plus interest and fees on the borrowed equity, and the lender must qualify you carrying both.
Rent-backs: put it in writing
If you sell first, staying on for a short period is written into the sale itself. Under 30 days, the SIP addendum from C.A.R. is the usual choice; at 30 days or more the RLAS lease takes over and the arrangement becomes landlord and tenant under California law, as the San Diego Association of REALTORS® notes. The buyer has to say yes, so request it when you negotiate.
Contingent offers
The COP form, last revised by C.A.R. in June 2024, is how a purchase is made to depend on a sale. It sets your deadline to sell, says whether the seller can keep marketing, and covers what happens if a backup buyer appears. Rudy completes it with you line by line.
Questions to ask your lender
- If I apply before my Rancho Del Rey sale is final, will you count both house payments? Fannie Mae’s guide does unless the old home has a signed contract and its buyer’s loan contingencies are removed.
- Should I set up a home equity line before the house goes on the market, and how does its rate change?
- What would a bridge loan cost me, and how would you count it when you qualify me?
- If a closing date moves, how long can my rate lock be extended and at what price?
Owners 55 and older: Proposition 19 timing
Downsizing after decades in one house is where Proposition 19 often matters. It covers owners 55 or older, severely disabled owners and anyone whose home was lost to a wildfire or natural disaster, and it lets them move their assessed base to a replacement purchased or built within 2 years before or after the sale. The replacement passes the value test at up to 100% of the old home’s value when it’s bought first, 105% in the year after the sale and 110% in the year after that.
Order matters here. Per the Board of Equalization, a home bought before the sale is taxed at full value until the sale happens, and that tax isn’t refunded later. Eligibility is the county assessor’s call, so check your dates with a tax adviser.
If you plan to scale down, the downsizing calculator puts your property tax numbers side by side.
About these numbers
- Every date counts calendar days; a weekend closing is marked, not moved.
- All four paths end with the same equity. They differ in how much cash you need while the deals overlap and what each one adds in costs.
- Rent, overlapping payments and equity-loan interest are figured per day.
- It leaves out tax on your gain, so check with your CPA. Lenders decide rates, limits and approval.
Questions owners ask
How long can I stay in my Rancho Del Rey home after closing?
As long as your buyer agrees to in writing. Under 30 days usually goes on the SIP addendum; longer stays need the RLAS lease, which brings in California’s rental rules.
Is it realistic to buy before I sell?
It can be, if you have the equity and the income to carry two payments for a while. A credit line set up while the house is unlisted, or a bridge loan, can supply the down payment, and your lender decides how much you qualify for.
Do I lose my low property tax base if I downsize?
Not necessarily. If you’re 55 or older, Proposition 19 may let you transfer it to a replacement bought within 2 years of the sale, subject to the value test and the assessor’s review.
Which path is cheapest?
With most inputs, same-day closings add the least, because there is no rent and no overlap, but they need a patient buyer. The table lists each path’s extra costs with your own numbers.
Sources: Zillow Research home values, rents and days to pending (Sep 2026); Freddie Mac Primary Mortgage Market Survey (Oct 29, 2026); FRED bank prime loan rate (Oct 27, 2026); NAR 2025 Profile of Home Buyers and Sellers (summary) (Dec 8, 2025); Freddie Mac: budgeting for upfront homebuying costs (Jun 4, 2025); California Civil Code 1675; CFPB: private mortgage insurance (Aug 28, 2023); CFPB: home equity lines of credit (Aug 28, 2026); Fannie Mae Selling Guide B3-6-06 (Sep 2, 2026); C.A.R. list of standard forms (Oct 30, 2026); San Diego Association of REALTORS®: post-closing occupancy (Aug 27, 2025); California State Board of Equalization: Proposition 19 (Oct 30, 2026). Your contracts, your lender and the county assessor have the final word on your own dates, loan and taxes.
More from Rudy
