What Is My Commercial Building Actually Worth in Orange County?

Your building is worth what a qualified buyer will wire into escrow after completing due diligence, not what Zillow estimates, not what your tax bill implies, and not what you need it to be worth to hit your return target. In Orange County right now, that number depends on five things: your product type, your submarket, your tenant roster, your lease rollover schedule, and how much capital the next owner has to deploy to keep the building competitive.

I spend most of my time in Newport Beach, Irvine, and Costa Mesa, and I cover all of Southern California, but Orange County office, industrial, flex, and land sales are where I see the tightest bid-ask spreads and the clearest signals of what buyers will actually pay. The difference between a building that trades at $420 per square foot and one that sits on the market for nine months at $380 is not mysterious. It comes down to underwriting.

What Buyers Underwrite First

Buyers start with your net operating income and work backward. They do not care what you paid, what you think it should be worth, or what the county assessor says. They care about your trailing twelve months of actual rent collections, your operating expense ratio, and what it will cost them to maintain occupancy over the next three to five years.

Office buildings in Newport Beach (92660) with credit tenants on five-year leases and minimal near-term rollover are trading in the $400 to $550 per square foot range, depending on building quality and parking ratios. Buildings with month-to-month tenants or significant vacancy are discounting 30 to 40 percent off that range because buyers are underwriting 18 to 24 months of lease-up risk and TI costs of $60 to $90 per square foot per lease. If your building has three leases rolling in 2027 representing 60 percent of your net rentable area, a buyer is going to haircut your pro forma rent by at least 15 percent and add a vacancy reserve that kills your valuation.

Industrial product in Costa Mesa (92626), Lake Forest (92630), and the Irvine Airport Area (92614) is a different story. Vacancy is sitting at 4 to 6 percent across these submarkets, and anything with modern clear heights, good freeway access, and a tenant base that actually pays rent is getting multiple offers. I have seen 20,000-square-foot flex buildings in Costa Mesa trade at $350 per square foot when the tenant is on a net lease with annual bumps. The same building with a tired tenant on a gross lease and deferred maintenance trades closer to $270 per square foot. The spread is all risk premium.

Flex and R&D product in Irvine Spectrum (92618) and central Irvine (92612) occupies a middle ground. Buyers like the optionality, they like the demographics (household incomes above $108,000 and business density that supports consistent demand), and they like the fact that you can reposition the space for office or light industrial depending on market conditions. But they are not paying office pricing unless the building feels like office product, and they are not paying industrial pricing unless it functions like industrial product. A 27.2-million-dollar R&D sale in El Segundo at $480 per square foot shows what a single-tenant, triple-net lease to a credit tenant can command, even in a submarket outside Orange County. The buyer underwrote zero lease-up risk and zero capital expenditure for years. That drives value.

You can walk through the mechanics of how buyers model all of this in more detail on my selling a building process page, but the short version is that every buyer is running the same math: purchase price divided by stabilized NOI equals cap rate, and cap rates for Orange County office are currently sitting between 6.5 and 8 percent depending on tenant credit and lease term. Industrial is tighter, between 5 and 6.5 percent, because there is less supply and stronger fundamentals.

Where the Money Lives Versus Where the Buildings Are

The wealthiest owner-occupants and investors in Orange County live in Newport Coast (92657), Newport Beach (92660), and Corona del Mar (92625), where average household incomes run from $165,000 to over $204,000. But the buildings they are buying are not in those zip codes. They are buying office product in Irvine Spectrum, industrial in Costa Mesa, and flex space near John Wayne Airport because that is where the tenant demand, the yield, and the capital appreciation potential sit.

Newport Coast has about 890 businesses and 8 percent office vacancy, which sounds tight until you realize the business base is wealth management firms, medical offices, and service providers who occupy small footprints and rarely move. Corona del Mar has even less scale. The real transaction volume is happening in Irvine (92618, 92612, 92620), where you have 2,400 to 4,200 businesses per submarket, household incomes above $108,000, and enough lease velocity to support a liquid market.

If you own a 30,000-square-foot office building in central Irvine (92612) with 14 percent submarket vacancy, your building is worth less today than it was in 2021, even if your rent roll has stayed flat. Cap rates have expanded, and buyers are pricing in higher vacancy risk. But if you own a 15,000-square-foot industrial building in Lake Forest (92630) with 4 percent submarket vacancy and a tenant on a five-year lease, you are probably looking at a valuation that is up 10 to 20 percent from three years ago because demand has outpaced supply and buyers are competing for limited inventory.

This is not about good buildings and bad buildings. It is about what the market is paying for different risk profiles in different submarkets right now. You can see how these dynamics layer across Orange County's districts and submarkets on my Orange County market intelligence map, which tracks where the capital is flowing and where it is sitting on the sidelines.

What Drives Premiums and Discounts

Tenant credit is the single biggest driver of value in today's market. A building leased to a Fortune 500 company on a 10-year lease with annual bumps will trade at a 20 to 30 percent premium over a building with the same square footage leased to a startup on a three-year lease with no bumps. The buyer is underwriting tenant default risk, rollover risk, and downtime risk. Every additional year of lease term reduces that risk and increases the price.

Deferred maintenance is the fastest way to kill your valuation. Buyers are not stupid. They walk the property, they look at the roof, they check the HVAC, and they price in every dollar of deferred capital expenditure. If your building needs a new roof, new parking lot paving, or HVAC replacement in the next 24 months, the buyer is going to deduct that cost from their offer, plus a contingency buffer. I have seen owners lose $200,000 in value because they deferred $80,000 in maintenance and the buyer added a 30 percent risk premium on top of the actual repair cost.

Parking ratios matter more than most owners realize, especially in office product. Newport Beach and Irvine office tenants expect four spaces per 1,000 square feet. If your building has 2.5 spaces per 1,000, you are limiting your tenant pool and your buyer pool. Buyers will discount that, usually by 10 to 15 percent, because they know they will struggle to lease the space at market rates.

Location within a submarket drives another 10 to 20 percent of value. A building two blocks from the 405 in Irvine Spectrum is worth more than the same building a mile inland with no freeway visibility. Industrial product within a quarter mile of the 55 or the 5 trades at premiums of $40 to $60 per square foot over comparable product in less accessible locations. Buyers underwrite logistics efficiency, and every additional mile from a major artery costs them time and money.

I wrote about how value-add buyers underwrite properties in a previous piece, and the same logic applies here. If a buyer sees an opportunity to add value through repositioning, lease-up, or capital improvements, they will pay more, but only if the numbers work after they account for the time, cost, and risk of execution.

The Mechanics of Getting to a Number

Most owners start with a broker opinion of value, which is exactly what it sounds like: a broker's informed opinion of what your building will trade for in the current market based on recent comparable sales, current vacancy trends, and tenant quality. A good BOV is not a one-page letter with a price range. It is a 15- to 20-page analysis that shows you the comps, explains the adjustments, and walks you through the underwriting logic a buyer will use.

I do not charge for a broker opinion of value because it is part of the service process, and it gives me a chance to understand your building, your goals, and whether now is the right time to sell. You can read more about what goes into a BOV and whether it makes sense for your situation in my piece on what a broker opinion of value is and whether it's free.

If you decide to move forward with a sale, the next step is positioning the building for marketing. That means getting your rent roll clean, your financials organized, and your property condition documented. Buyers will request a trailing twelve months of financials, a current rent roll with lease abstracts, and a property condition report. If you do not have those ready, you are adding 30 to 60 days to your timeline and giving buyers a reason to walk or renegotiate.

The marketing process itself is covered in detail in my complete guide to selling a building, but the short version is that we take the building to market with a targeted buyer list, a clean offering memorandum, and a process designed to create competition among qualified buyers. The more buyers in the process, the tighter the bid-ask spread and the higher the final price.

Where Timing Fits

Timing is not everything, but it is not nothing. If you are sitting on a building with significant lease rollover in 2027 and you are in a submarket with rising vacancy (Irvine office at 12 to 14 percent, for example), waiting another 12 months is probably going to cost you money. Buyers price rollover risk aggressively, and the closer you get to lease expiration, the more leverage they have to discount your NOI.

If you own industrial product in a tight submarket like Lake Forest or Costa Mesa with stable, long-term tenants, you have more flexibility. Vacancy is low, demand is strong, and buyers are competing for the limited inventory that comes to market. You are not racing the clock the same way an office owner is.

Interest rates are a factor, but not the way most people think. Higher rates mean higher cost of capital for buyers, which compresses how much they can pay for a given NOI. But rates have been elevated for two years now, and buyers have adjusted. The buyers who are active today have factored current rates into their underwriting, and they are still closing deals. The question is not whether rates are high, it is whether the building you are selling offers enough yield to justify the cost of capital at current rates.

I covered this dynamic in more depth in my piece on when the right time to sell commercial property is, and the answer is usually simpler than owners expect: the right time to sell is when the building no longer fits your strategy, when you have better uses for the capital, or when the market is paying more than you think it will in 12 months.

What Happens When You Ignore the Market

The most expensive mistake I see is owners who set an asking price based on what they need rather than what the market will pay. If you need $500 per square foot to hit your return target but comparable sales are closing at $420, you are not getting $500. You are sitting on the market for six to nine months, you are signaling to every buyer that you are not serious, and you are eventually taking $390 because you burned all your negotiating leverage by overpricing.

Buyers in Orange County are sophisticated. They know the comps, they know the submarkets, and they have access to the same data you do. If your building is priced 15 percent above the market, they are not making an offer. They are moving to the next deal. The only buyers who will engage with an overpriced listing are the ones looking for a desperate seller who will drop the price by 20 percent after three months of no activity.

The second most expensive mistake is underestimating how much work it takes to close a deal. Buyers will request extensions, they will renegotiate after inspections, and they will walk if they find something in due diligence that you did not disclose. If you do not have your financials clean, your tenant estoppels signed, and your title work in order before you go to market, you are adding risk and cost to the process. I have seen deals blow up two weeks before close because a seller could not produce a signed lease amendment or because an environmental report surfaced a problem the seller knew about but did not disclose.

This is all standard commercial real estate due diligence, and you can review the full checklist in my piece on CRE due diligence, but the takeaway is that preparation matters. The cleaner your deal, the higher the price and the faster the close.

The Answer to What Your Building Is Worth

Your building is worth what it produces in net operating income, discounted by the cap rate buyers are willing to accept for that level of risk in that submarket today. Everything else is commentary.

If you want to know what that number is for your building, the fastest way is a broker opinion of value from someone who has closed deals in your submarket in the last six months. I do those for office, industrial, flex, and land in Orange County and across Southern California, and you can reach me through the inquiry form on this site if you want to start that conversation.