LOS ANGELES REAL ESTATE | BUYER & SELLER INSIGHTS

The Square Footage You're Paying For Might Not Legally Exist

By Amir Jawaherian | The Agency, Los Angeles

Every great Los Angeles house has a story. The one I worry about is the story the permit file tells, because it is often a very different story than the listing.

The glass-walled gym where the garage used to be. The pool house that quietly grew a kitchen and a shower. The enclosed loggia that became a family room in 2009.

They photograph beautifully. But if nobody pulled a permit, that space lives in a gray zone that can follow a property through appraisal, financing, insurance, and resale.

Most agents won't tell you this, but on older luxury homes in L.A., the gap between what was built and what was approved is one of the most common things buyers and sellers underestimate.

Unpermitted Space Is Not Bonus Space

Start with the money.

A buyer who pays a per-square-foot price for 7,500 square feet assumes all 7,500 count. An appraiser may not agree.

Unpermitted additions are frequently discounted or excluded from gross living area, and local permit consultants estimate that the discount on unpermitted square footage commonly runs in the range of 15 to 25 percent versus permitted space, when it's counted at all.

On a jumbo loan, that can turn a clean appraisal into a gap the buyer has to cover in cash.

Lenders notice too. Some will not finance a property with known unpermitted work, or will require it to be resolved first. Title insurers may exclude certain related risks from coverage.

The listing's square footage is also not gospel. Many listings lean on assessor records, which reflect what was permitted and assessed, not necessarily what's standing.

When the brochure, the assessor, and the tape measure disagree, that disagreement is information.

Disclosure Is Not Optional, Even "As-Is"

Sellers, this part is for you.

California's Transfer Disclosure Statement asks directly whether there are room additions, structural modifications, or other alterations made without necessary permits.

Selling "as-is" does not erase that obligation.

If you know about it, disclose it. A seller who stays quiet is inviting a post-closing dispute that costs far more than the original fix.

When I represent a seller with unpermitted space, we decide before launch whether to legalize, remove, or disclose and price it.

That decision shapes the marketing, the comps we use, and how we defend the number.

I don't just list properties. I position them, and a permit problem the buyer discovers on day 12 of their contingency is a negotiation you've already lost.

The same problem disclosed up front, with a plan and a bid, is just a line item.

How to Read a House's Paper Trail

Buyers, this is the homework that pays.

Within the City of Los Angeles, the Department of Building and Safety's online building records will show the permit history for most addresses, and ZIMAS will show zoning and parcel information.

But know your jurisdiction.

Beverly Hills, Malibu, Calabasas, and unincorporated L.A. County each keep their own records, while Bel Air and the Hollywood Hills are City of L.A., even if they feel like their own towns.

Then do the simple, powerful thing almost nobody does: compare the record to the house.

Walk it with the permit list in hand. Count the bathrooms. Look at the garage, the guest house, the basement, any enclosed patio, and any room that feels like it was added later.

Ask the seller for permits, final sign-offs, and certificates of occupancy for anything that doesn't match.

The Fixes, and the Fine Print

If the space is unpermitted, there are three paths:

1. Legalize it: Pursue retroactive permits and required approvals.

2. Remove it: Restore the property to a compliant condition.

3. Price the risk: Buy or sell with full disclosure and a valuation that reflects the uncertainty.

Legalizing after the fact usually means as-built plans, inspections, and sometimes opening walls.

Permit consultants in L.A. report that retroactive approvals can take several months to a year, so this is not a project to start in escrow.

California AB 2533: A Potential Path for Older ADUs

There is one genuinely useful tool for a specific situation.

California's AB 2533, effective January 1, 2025, created a legalization path for unpermitted ADUs and junior ADUs built before January 1, 2020.

Local agencies generally cannot deny the permit solely because the unit fails to meet certain current building standards or local ADU requirements, provided the applicable statutory health and safety conditions are satisfied. The law also provides specified protections against penalties.

If that guest house predates 2020, confirm eligibility with the building department first.

Don't Assume Title Insurance Will Protect You

And don't count on title insurance to bail you out.

Certain ALTA Homeowner's Policy forms may provide limited coverage for forced removal of structures built without required permits, subject to the actual policy terms, exclusions, deductibles, and coverage limits.

That protection may be a rounding error on a Westside remodel.

One more nuance: once space is legalized, the assessor can add the value of qualifying new construction to your property tax assessment.

Factor it into the math.

The Bottom Line

The permit file is the most boring document in a luxury transaction and one of the most valuable.

Buyers who read it negotiate from facts. Sellers who clean it up before listing protect their price and their peace of mind.

If you're selling a home with a few "creative" improvements, or buying one and want a second set of eyes on the paper trail, let's talk before it costs you.