Why comps matter

Calculator, glasses, and pen rest on a financial report, reflecting careful business analysis and planning.

If you’re selling a home in San Bruno, San Mateo County, Palo Alto or anywhere in Silicon Valley, comparative sales—“comps”—are one of the single most important tools you’ll use. I’ve been thinking a lot about comps lately, and honestly, they do two big jobs for sellers: they help keep you grounded and they help expose bad comparisons that could hurt your sale. Below I break down both of those roles, show how buyers use comps, and give practical steps so you can use comps to your advantage.

How buyers actually use comps

Buyers don’t buy your memories. They buy data.

Buyers (and their agents) look at recent sales nearby to decide what they’ll pay. They focus on objective features: square footage, layout, condition, and finishes.

Emotional investments—your time, sweat equity, and memories—don’t translate directly into price. A beautiful, personalized renovation matters only insofar as it matches buyer preferences and market expectations.

In competitive Bay Area markets, buyers combine comps with current listings, market conditions, and financing environment to form an offer strategy.

Local context: Bay Area market realities

In Palo Alto and much of Silicon Valley, limited supply and strong demand can support higher prices for well-updated homes. That said, pricing still needs to align with comparable closed sales—especially in a market that’s trending more cautiously.

In San Bruno and broader San Mateo County, neighborhood-level comps matter a lot: one block can behave differently than the next depending on schools, transit access (BART/caltrain), and condition of nearby homes.

(If you want local stats for your neighborhood, I can pull recent closed-sales data for the past 6–12 months.)

Two roles comps play for sellers

Keep you grounded

It’s easy to overvalue your home because you’ve invested time and money. Comps give reality-based boundaries. They show what buyers have actually paid in your area for comparable homes.

Example: you spent $200,000 on an addition with mid-to-high finishes. That investment adds value, but only if the finished product aligns with buyer expectations for that price range and neighborhood. Comps help you see where that finished product sits in the local market.

Reveal misleading or unfair comparisons

Some listing agents or buyers may present comps that aren’t truly comparable: distressed sales, significantly smaller lots, or homes with major deferred maintenance.

If a proposed comp is a dilapidated property or one with a different layout, that’s a red flag. Comps should be recent, similar in size, condition, and location.

Use comps to spot when someone’s “lowball” logic is being dressed up as data.

How to read comps like a pro (practical checklist)

Look for closed sales, not just listings. Closed sales reflect what buyers actually paid.

Favor comps from the past 3–6 months; extend to 12 months in slower markets.

Match the fundamentals: square footage, bed/bath count, lot size, and layout.

Adjust for condition and finishes. A high-end kitchen can justify a premium, but only if buyers in your submarket value that upgrade.

Consider location factors: school district, commute times (BART/caltrain), and neighborhood amenities can sway price.

Watch for atypical comps—distressed, estate, or heavily remodeled homes that don’t match your property.

Quick example to illustrate

Imagine you live in central San Bruno and added 300 sq ft with upgraded finishes. Recent comps show homes of similar size selling for $1.3M, while a dilapidated adjacent sale closed for $1.0M. If someone uses that $1.0M sale to justify lowering your price, ask for comparable, renovated sales instead. The renovated comps will provide a realistic range for your listing.

When comps aren’t the whole story

Market momentum matters. If inventory tightens, you may receive offers above comparable sales. Conversely, if mortgage rates spike or inventory floods the market, comps may drift lower.

Unique features (views, large lot, ADU) may not have direct comps. In those cases, comps plus a qualified agent’s judgment are necessary.

Actionable takeaways for sellers (what to do next)

Ask your agent for a short list of 3–5 recent closed comps that closely match your home’s size, condition, and neighborhood.

Review those comps with a focus on finishes and layout—not on how much you personally invested.

If you see a comp that feels off, ask why it was included and request alternatives.

Consider a pre-listing consultation or appraisal if your home has unusual features.

Price within a realistic range based on comps, then use staging, photos, and marketing to highlight the value that buyers can see.

Comparative sales aren’t just numbers—they’re the market’s vocabulary for value. Use comps to stay realistic about what’s possible, and to spot anyone trying to slip a bad comparison past you. If you’d like, I can pull recent closed comps for homes in San Bruno, San Mateo County, or Palo Alto and walk through what they mean for your asking price. Want me to pull comps for your street?