Off-Market Basics

Off-Market Deals: Zoning and Entitlement Due Diligence

What to verify about zoning and permits before you commit to a private, off-market purchase, including the 2026 state changes that can add options, and how Rudy can help you start the conversation with the city.

Updated October 2026 · Rudy Flores · Coldwell Banker West

Private deals move fast, and the ability to verify what a property can become is often the difference between a good and a costly purchase. Here is a due-diligence checklist for zoning and permits, and where Rudy’s 12 years of taking projects through city approvals can help.

Why zoning matters more in a private sale

Off the MLS there is usually less packaged information, and pricing can hinge on a property’s potential: an ADU, a second unit, a lot split. That potential is only real if zoning and permits support it. Verify it with the jurisdiction, not the seller.

State laws that can add options

Accessory dwelling units (ADUs). Several changes take effect in 2026. A city must decide within 15 days whether an ADU application is complete, and an application it fails to answer in time is treated as complete (SB 543). A city may require owner-occupancy for a junior ADU only when it shares a bathroom with the main home (AB 1154). And an ADU ordinance that a city does not send to the state within 60 days of adopting it, or does not answer the state’s findings on within 30 days, is null and void (the 2025 bill SB 9, not to be confused with the 2021 lot-split law of the same number).
Duplexes and lot splits. The 2021 law known as SB 9 lets owners of many single-family lots build a duplex, or split the lot in two, with staff-level approval and no public hearing, subject to conditions. For 2026, AB 1061 extends that ministerial path to projects in historic districts where the buildings themselves are not designated historic resources.
Housing near transit. SB 79, signed in October 2025 and effective in cities on July 1, 2026, requires higher-density housing to be allowed near major transit stops in the state’s largest transit counties, a group that includes San Diego and Orange counties. Its allowances are tiered by the type of stop, and cities are adopting their own approaches, so whether a specific lot qualifies is a question for the city and the state’s housing department.
CEQA streamlining. Two 2025 laws reduce environmental review for housing: AB 130 creates a broad infill exemption, and SB 131 provides streamlining for projects that come close to qualifying for other exemptions.

Each has conditions, and a city implements them parcel by parcel. Treat them as questions to put to the planning office.

The due-diligence checklist

Zoning district, development standards and any overlays.
Permit history and any open permits.
Whether known additions or conversions were permitted.
Whether an ADU, duplex or lot split is realistic on the lot.
What the association or recorded restrictions allow.
A written answer from the planning office to your specific question, with a name and date.

Rudy’s off-market buyer playbook covers the rest of the process.

How Rudy can help start the conversation

Rudy is a licensed real estate agent, and before that he spent 12 years in real estate development for the national telecommunications carriers, taking cell sites through entitlements, permitting and right-of-way with city and county jurisdictions, more than a hundred of them. He knows what a planning counter needs to see, which questions to ask first, and how long each step tends to take. Read his background.

For a homeowner or buyer in San Diego County, that experience is useful in a specific, limited way: helping you start the conversation with the jurisdiction. That can mean:

working out which rules, zones and overlays apply to an address before you make an offer or an application;
putting your idea on one page so a planner can react to it quickly;
preparing you for a pre-application call or counter visit, including what to bring and what to ask;
connecting you with an architect, engineer, land-use attorney or contractor when the project needs one;
building realistic timelines into your purchase, sale or loan.

Common questions

Can I add a contingency for zoning verification?

Yes, and in a private deal it is worth negotiating time for it.

Does the seller’s word count?

Verify with the jurisdiction. Seller statements are not a substitute for permit records.

How long do city answers take?

It varies. Ask early, put your question in writing and follow up.

A note on what this is

This page is general information from a real estate professional. It is not legal, engineering, architectural or tax advice, and it does not guarantee that any permit will be issued. Zoning and permit rules differ from one parcel to the next and are updated regularly: check with the city or county and with licensed professionals before you act.

Keep exploring

Off-market sales and property tax — How the assessor finds out.
The off-market guide — What off-market means and how it works.
Blog — Playbooks for buyers and sellers.
About Rudy — Twelve years in telecom real estate, then homes.

Talk to a lender. Rates, loan programs and approvals come from lenders, not from websites or real estate agents. Talk to your own mortgage broker, or use our preferred lender, Point Mortgage Corporation (NMLS #231073), at (619) 475-4095. You are always free to choose any lender you like, and you can verify any lender’s license at nmlsconsumeraccess.org.

Sources

General information for orientation, not legal, tax, financial or appraisal advice. Details change; confirm anything that matters with the official source, your lender and your agent.