Best Realtor in Hillsborough: How to Choose

What "Best Realtor in Hillsborough" Actually Means

Hillsborough is one of the most exclusive residential towns on the San Francisco Peninsula, and the phrase "best realtor in Hillsborough" gets used loosely. It is worth pausing on what it should mean for someone preparing to buy or sell here.

Hillsborough is a thin market. The town closed approximately 130 single-family transactions across all of 2025 at a median sale price of $5,564,000, according to SAMCAR via MLSListings. April 2026 closed 15 homes at $8,000,000 with 16 days on market; March 2026 closed 10 homes at $7,152,000 with 39 days on market. Annual volume is the better baseline because monthly numbers swing sharply when one or two trophy properties trade.

That low transaction count is the most important fact for choosing a Hillsborough real estate agent. Most Peninsula agents who claim "Hillsborough experience" have done one or two transactions in town, with the rest of their volume in Burlingame, San Mateo, or further south. The structural realities of Hillsborough (Architectural and Design Review Board oversight, thin comps, off-market culture, larger and older properties) reward direct local depth in a way that other Peninsula cities do not.

The honest version of "best realtor in Hillsborough" is closer to: an experienced Peninsula agent who actively transacts in Hillsborough, has walked clients through the ADRB process more than once, holds relationships across the small group of agents who quietly source pre-market inventory at this level, and brings the discretion required at the $5M to $30M price band. The criteria below are how that decision usually gets made.

Criteria for Evaluating a Hillsborough Real Estate Agent

Five criteria do most of the work when narrowing the field. They are not the only inputs, but they separate competent Peninsula agents from agents with true Hillsborough depth.

Recent local transactions. Ask any prospective realtor in Hillsborough for the last three to five Hillsborough closings, by street, year, and side represented. Two Hillsborough closings in the past two years is meaningful. Zero closings in the past three years, with nearby Burlingame deals offered as substitutes, is a different signal.

ADRB experience. The Architectural and Design Review Board is the most distinctive structural feature of Hillsborough real estate. Any new construction, substantial remodel, or addition requires ADRB review, with approval cycles that routinely extend project timelines by 6 to 12 months. A Hillsborough-experienced agent has helped clients evaluate prior ADRB approvals on target properties, navigate active applications, or sequence a renovation through review post-closing.

Off-market network. A meaningful portion of $7M+ Hillsborough activity begins as private conversations between agents before any MLS exposure. Privacy-sensitive sellers often prefer a quiet pre-market test before a public listing. Buyers relying only on public portals miss inventory that never advertises publicly.

Comfort with thin-comp pricing. Pricing a Hillsborough property accurately is harder than pricing a Menlo Park or Burlingame home. Comp sets are smaller, often drawn from a year or more of sales rather than the prior 90 days, and adjustments for lot, view, architectural significance, and ADRB history are material. Ask how the agent approaches pricing in a market where appraisal often works from a handful of recent comps.

Discretion and judgment. The Hillsborough buyer and seller pool is small, and family-office advisors, attorneys, and wealth managers are present on both sides of many transactions. A realtor who treats client information carefully, runs a quiet showing schedule, and manages marketing assets professionally protects the position of both buyer and seller. Discretion is structural at this price point, not a soft skill.

The Off-Market Reality of Hillsborough Real Estate

Buyers searching publicly for the best realtor in Hillsborough often underestimate how much inventory never reaches the open MLS. The pattern is partly cultural and partly practical.

Privacy is a defining value of the town. Hillsborough has no commercial zoning, no streetlights, and limited sidewalks by design, per the Town of Hillsborough General Plan. The same disposition that produced those planning choices shapes how residents prefer to transact. Many sellers test the market through trusted agents before committing to public listing. Some sell entirely off-market when the right introduction surfaces.

There are also operational reasons. Trophy properties draw curiosity-driven foot traffic that distracts from real buyers. Quiet pre-market activity allows the listing agent to filter for genuinely qualified parties through reciprocal relationships with other agents working at this price point. The practical implication is that the public listing pool understates true inventory, and an agent active in Hillsborough hears about properties weeks or months before they appear publicly, sometimes about properties that never do.

This is also why the question "who is the best realtor in Hillsborough" is better answered by reference to network than to marketing. A realtor with depth in this town carries a quiet flow of pre-market opportunities to qualified buyers, and a separate flow of qualified buyer introductions to prospective sellers. That flow is built across years and is difficult to replicate by an agent who only occasionally transacts here.

Buy-Side vs Sell-Side Specialization in a Hillsborough Realtor

Many strong Hillsborough realtors handle both sides of the transaction, but the skill profile differs and it is worth understanding the distinction when choosing an agent.

A buy-side specialist in Hillsborough lives inside the off-market network and prioritizes property underwriting: identifying suitable properties before they list, vetting condition, reading prior ADRB approvals carefully, evaluating recorded landscape easements and tree protections, assessing renovation risk against the buyer's plans, and structuring offers that hold through appraisal in a thin-comp market.

A sell-side specialist focuses on preparation, documentation, pricing, and discretion: pre-listing inspections (general, roof, sewer lateral, structural where appropriate) to front-load the disclosure package, professional staging and photography direction calibrated to estate-scale properties, careful pricing against a thin comp pool, and a decision on whether to run a phased pre-market plus MLS plan or go straight to public listing.

When interviewing realtors in Hillsborough, ask which side they have done more of recently. Some tilt clearly toward buyers, others toward sellers, and a smaller number do both at meaningful volume. Honesty on this is more useful than a generic claim of balance.

What to Ask in Your First Interview With a Hillsborough Realtor

A first meeting with any prospective realtor in Hillsborough should be a structured conversation, not a pitch. Six questions cover most of what matters, and the specificity of the answers reveals more than any marketing material.

• What were your last three Hillsborough closings, by street, year, and side represented? Listen for direct, specific answers. Vague generalities suggest limited recent local work.
• How many ADRB applications have you helped clients navigate, and what did you learn from them? A useful answer references the rhythm of meetings, the kinds of revisions the board typically requests, and the documentation that travels with the property.
• Which sub-areas (Country Club, Historic Estates, Lower North Hillsborough, Tobin Clark) do you transact in most, and why? Hillsborough is not monolithic. An agent who genuinely works here will have a clear point of view on each sub-area.
• How do you approach pricing in a market where comps are thin and monthly medians swing sharply? Look for a methodology, not a slogan. Strong answers reference comp adjustments for lot, view, architecture, and ADRB history, and acknowledge appraisal risk.
• What does your pre-market and off-market network look like? If buying, this is where the inventory pipeline lives. If selling, this is the optional pre-market test channel. Either way, the answer should be specific.
• How will you handle discretion in marketing, showings, and communications? Hillsborough sellers and serious buyers alike value a quiet process. The answer should describe how showings are screened, how marketing is calibrated, and how information is handled.

Two additional questions can be useful in particular situations. For families considering renovation: "Walk me through the ADRB documentation you would request during the contingency period on a target property." For sellers with historic homes: "How do you evaluate Mills Act eligibility and prior register listings?" The depth of these answers tells you whether the agent has done the work in real transactions or read about it.

Lisa M. Lum: Background, Approach, and Hillsborough Practice

Lisa M. Lum is a Realtor with Coldwell Banker Realty, based at 1706 El Camino Real, Suite 220, Menlo Park, CA 94027. She works across San Mateo and Santa Clara counties, with a substantial focus on Peninsula estate communities including Hillsborough, Atherton, Woodside, and Menlo Park. Her practice combines technical due-diligence rigor (disclosure review, contingency structuring, appraisal coordination on thin comp sets) with editorial estate marketing (architectural storytelling, photography direction, prep sequencing).

Lisa speaks English, Chinese, Japanese, and French, which supports work with international buyers and multigenerational households where elder family members may prefer to discuss material terms in their first language. Direct conversation, rather than translation, tends to build trust faster with these families and surface concerns earlier in the transaction.

Buyers and sellers typically come to Lisa earlier than they expect, often during the financing or property-preparation phase rather than after specific properties or offers are on the table. That early engagement is where the highest-value work happens: calibrating financing structure, assessing ADRB risk against renovation plans, sequencing preparation and pricing, and weighing whether a quiet pre-market exposure is appropriate for a particular property and seller.

The Hillsborough Real Estate Guide is the pillar reference on the town's market, sub-areas, schools, ADRB framework, and buying and selling process. The Hillsborough community page sits alongside as a faster overview, and the sub-area pages for the Country Club and Historic Estates areas have street-level detail. For buyers exploring Hillsborough alongside the wider Peninsula, the Silicon Valley Home Buyer's Guide covers the broader playbook on financing, contingencies, inspections, and offer structure. Lisa's about page has the longer background on her practice.

Practical Next Steps if You Want to Interview Lisa

If you are preparing to buy or sell in Hillsborough and want to evaluate Lisa for the role, the practical first step is a short conversation: priorities, timeline, constraints, and how she would approach your situation. There is no obligation in the first meeting, and Lisa is comfortable with prospective clients interviewing other agents in parallel.

Practical contact details:

• Phone: 650-275-7727
• Email: lisa.lum@cbrealty.com
• Office: 1706 El Camino Real, Suite 220, Menlo Park, CA 94027
• Brokerage: Coldwell Banker Realty
• License: California DRE 02005150
• Languages: English, Chinese, Japanese, French
• Online: lisamlum.com/contact

For buyers, come to the first meeting with a working sense of price range, timeline, school priorities, and any renovation thinking. Pre-approval is not required for the first conversation, but Lisa can introduce mortgage broker relationships at the relevant price band if helpful. For sellers, come with a working sense of timeline, prior improvements and ADRB history, and the level of public exposure you are comfortable with. The first conversation often surfaces preparation work worth starting before any listing decision is finalized.

Choosing a realtor in Hillsborough is a careful exercise, not a quick one. Depth of local experience, ADRB familiarity, off-market network, and discretion are the inputs that consistently separate a strong agent from a competent one in this market. Take the interviews seriously, ask for specifics, and choose the person whose answers reflect the kind of process you want to run.