CondominiumResidential
555 Byron St
PALO ALTO, CA 94301
1,432 ft²
Lot SizeThe size of the land the home sits on, from county records.
1997
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
4
ParkingThe number of parking spaces on the property, including the garage.
Built 19974 floors36 units1,354–2,574 ft²
$67M
All units combinedThe sum of our current value estimates for every unit in the building — roughly what the whole building's homes are worth together.
$1.9M
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$1048
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.
-53.9%vs the Palo Alto ZIP median sale $/ft² ($2273)
Sales Performance
$1.9M
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
-17.2%
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
3
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
8.3%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+1.9%per yeartypical hold 10.2 yrsfrom 60 same-unit resales
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
19972001200620112015201920222026
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
19972001200620112015201920222026
96 arms-length sales on record for this building.
Unit Mix & Floor PlansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.
Every unit: size vs estimated valueEvery unit in the building as one dot: across is its size, up is our current value estimate, and color is its bedroom count. Vertical columns of dots are recurring floor plans; the height spread within a column shows how much floor, view and condition move prices for the same layout.
2 bd3 bd
2 bed
15 units$1.9M · $1045/ft²
3 bed
21 units$1.9M · $1051/ft²
Recurring floor plansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.
3 bd · 3 ba · 2,067 ft²
6 units$2.4M · $1174/ft²
2 bd · 2 ba · 1,354 ft²
4 units$1.4M · $1016/ft²
2 bd · 2 ba · 1,454 ft²
3 units$1.4M · $993/ft²
3 bd · 2 ba · 1,546 ft²
3 units$1.6M · $1051/ft²
2 bd · 2 ba · 1,548 ft²
3 units$1.7M · $1104/ft²
3 bd · 2 ba · 1,589 ft²
3 units$1.4M · $912/ft²
3 bd · 2.5 ba · 1,825 ft²
3 units$1.8M · $978/ft²
2 bd · 2.5 ba · 2,042 ft²
3 units$2.5M · $1224/ft²
3 bd · 2.5 ba · 1,844 ft²
2 units$1.9M · $1025/ft²
One-off layouts
6 units
Value DistributionHow the building's units spread across value ranges by our current estimates. A wide spread usually means big differences in size, floor or view.
$1.2M–$1.5M
8 units
$1.5M–$1.7M
5 units
$1.8M–$2M
8 units
$2.1M–$2.2M
4 units
$2.4M–$2.5M
4 units
$2.6M–$2.8M
3 units
$2.9M–$2.9M
1 unit
$3.4M–$3.4M
1 unit
Value by Floor & LineAverage estimated price per square foot by floor range, using unit numbers to infer floors. Higher floors usually price higher — the gap shows how much the view is worth here.
Floor 1
$1116/ft²8 units · +7%
Floor 2
$1207/ft²10 units · +15%
Floor 3
$1028/ft²10 units · -2%
Floor 4
$1156/ft²6 units · +10%
Unit lines by $/ft²Condo units stacked vertically share a unit line — the last digits of the unit number (like 05 in 1205, 1305, 1405). Lines share a layout and exposure, so comparing estimated $/ft² by line shows which position in the building commands a premium.
Line ·03
$1331/ft²3 units · +27%
Line ·09
$1198/ft²3 units · +14%
Line ·11
$1190/ft²3 units · +14%
Line ·10
$1184/ft²3 units · +13%
Line ·02
$1137/ft²4 units · +8%
Line ·05
$1116/ft²3 units · +7%
Line ·04
$1055/ft²3 units · +1%
Line ·01
$997/ft²4 units · -5%
Line ·07
$983/ft²3 units · -6%
Line ·06
$977/ft²3 units · -7%
Ownership & Financing
Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.53%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.89%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.5.4 yrs
Cash purchases (5 yrs)The share of purchases in the last 5 years with no mortgage recorded. High cash share is common in second-home and investor buildings.87%
Avg. loan-to-valueAverage current loan balance against unit value across the building. Low numbers mean owners hold lots of equity — a sign of financial stability.19%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$1,906,272
Median tax billThe middle annual property tax bill among the building's units.$14,947
Pre-foreclosure noticesUnits with an active pre-foreclosure or foreclosure notice on file.0
Recent SalesThe latest recorded arms-length sales in the building, newest first.
Unit 305Jun 11, 2026$1,525,000$985/ft²Unit 208Mar 12, 2026$2,000,000$1477/ft²Unit 105Nov 25, 2025$1,925,000$1244/ft²Unit 210Mar 7, 2025$2,325,000$1504/ft²Unit 206May 20, 2024$1,600,000$877/ft²Unit 107Apr 30, 2024$1,150,000$849/ft²Unit 305Dec 14, 2023$1,150,500$743/ft²Unit 106Sep 6, 2023$1,650,000$904/ft²Unit 410Jul 28, 2023$1,180,000$763/ft²Unit 201Jun 15, 2023$1,400,000$759/ft²
Values are TopHap estimates, not appraisals. Sales, ownership and tax figures come from recorded county documents via ATTOM and can lag by several weeks.
Climate Risk
Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.40
44
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
28
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
28
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
40
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
60
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.17 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.1 percent flood zone
Scores 0–100; higher = greater projected risk.
Property Facts
Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
CountySANTA CLARA
Lot (acres)The size of the land the home sits on, from county records.0.03
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Carport (Unspecified)
PoolWhether the property has a pool, and what kind, such as in-ground.Pool W/Hot Tub/Spa
Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.
EHM
Addison Elementary SchoolA+
Elementary · Grades KG–5 · 0.4 mi
Palo Alto High SchoolA+
High · Grades 9–12 · 0.9 mi
Frank S. Greene Jr Middle SchoolA+
Middle · Grades 6–8 · 1.4 mi
District: Palo Alto Unified School District
Neighborhood · ZIP 94301These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.
CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.124
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.87
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.450
Index scale: 100 = US average (tick). Lower is better.
Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.88%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.18,260
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.7,497 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$189,809
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$274,470
Average tempThe average temperature here across a full year.59°F
Annual precipHow much rain and melted snow falls here in a typical year.16 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.73%
All UnitsEvery property record the county has at this street address, such as the units in a condo building. Prices shown are our estimates, not asking prices.
555 Byron St # 101
3 bd · 2.5 ba · 1,810 ft²
555 Byron St # 102
2 bd · 2 ba · 1,454 ft²
555 Byron St # 103
3 bd · 3 ba · 1,984 ft²
555 Byron St # 104
3 bd · 2 ba · 1,589 ft²
555 Byron St # 105
2 bd · 2 ba · 1,548 ft²
555 Byron St # 106
3 bd · 2.5 ba · 1,825 ft²
555 Byron St # 107
2 bd · 2 ba · 1,354 ft²
555 Byron St # 109
3 bd · 3 ba · 2,067 ft²
555 Byron St # 201
3 bd · 2.5 ba · 1,844 ft²
555 Byron St # 202
2 bd · 2 ba · 1,454 ft²
555 Byron St # 203
3 bd · 3 ba · 2,067 ft²
555 Byron St # 204
3 bd · 2 ba · 1,589 ft²
555 Byron St # 205
2 bd · 2 ba · 1,548 ft²
555 Byron St # 206
3 bd · 2.5 ba · 1,825 ft²
555 Byron St # 207
2 bd · 2 ba · 1,354 ft²
555 Byron St # 208
2 bd · 2 ba · 1,354 ft²
555 Byron St # 209
3 bd · 3 ba · 2,067 ft²
555 Byron St # 210
3 bd · 2 ba · 1,546 ft²
555 Byron St # 211
2 bd · 2.5 ba · 2,042 ft²
555 Byron St # 301
3 bd · 2.5 ba · 1,844 ft²
555 Byron St # 302
2 bd · 2 ba · 1,454 ft²
555 Byron St # 303
3 bd · 3 ba · 2,067 ft²
555 Byron St # 304
3 bd · 2 ba · 1,589 ft²
555 Byron St # 305
2 bd · 2 ba · 1,548 ft²
555 Byron St # 306
3 bd · 2.5 ba · 1,825 ft²
555 Byron St # 307
2 bd · 2 ba · 1,354 ft²
555 Byron St # 308
3 bd · 2.5 ba · 1,778 ft²
555 Byron St # 309
3 bd · 3 ba · 2,067 ft²
555 Byron St # 310
3 bd · 2 ba · 1,546 ft²
555 Byron St # 311
2 bd · 2.5 ba · 2,042 ft²
555 Byron St # 401
2 bd · 2.5 ba · 2,574 ft²
555 Byron St # 402
2 bd · 2 ba · 1,813 ft²
555 Byron St # 403
3 bd · 2.5 ba · 2,451 ft²
555 Byron St # 409
3 bd · 3 ba · 2,067 ft²
555 Byron St # 410
3 bd · 2 ba · 1,546 ft²
555 Byron St # 411
2 bd · 2.5 ba · 2,042 ft²
Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.
About 555 Byron St
How many units are in 555 Byron St, Palo Alto, CA?
555 Byron St, Palo Alto, CA has 36 residential units across 4 floors, built in 1997, according to county assessor records.
What is a unit at 555 Byron St, Palo Alto, CA worth?
The median TopHap Estimate across the 36 units at 555 Byron St, Palo Alto, CA is $1,903,874. That works out to $1048 per square foot. Units run from 1,354 to 2,574 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.
Is 555 Byron St, Palo Alto, CA expensive for Palo Alto?
Units at 555 Byron St, Palo Alto, CA carry a median of $1048 per square foot, 54% below the Palo Alto median of $2273 per square foot.
How often do units sell at 555 Byron St, Palo Alto, CA?
3 units at 555 Byron St, Palo Alto, CA sold in the last 12 months, out of 96 recorded arms-length sales all time. That is a turnover rate of 8.3% of the building per year. The median sale over that period was $1.9M.
Have units at 555 Byron St, Palo Alto, CA appreciated?
Across 60 repeat sales of the same unit, 555 Byron St, Palo Alto, CA returned a median 1.9% per year. Because each pair is the same unit bought and sold, the figure is not distorted by which units traded. The median owner held for 10.2 years.
What floor plans does 555 Byron St, Palo Alto, CA have?
The most common plan at 555 Byron St, Palo Alto, CA is a 3-bedroom of 2,067 square feet, repeated 6 times, with a median estimate of $2,427,124. TopHap identifies 9 recurring plans in the building.
More homes on Byron St
- 2725 Byron St1,729 ft² · Sold $2.4M · Aug 2026
- 1427 Byron St$5.6M4 bd · 3 ba · 3,030 ft² · Sold $5.6M · Jul 2026
- 555 Byron St # 305$1.5M2 bd · 2 ba · 1,548 ft² · Sold $1.5M · Jun 2026
- 1150 Byron St$7M4 bd · 3.5 ba · 3,293 ft² · Sold $6.9M · Jun 2026
- 2066 Byron St$7.4M4 bd · 3 ba · 3,065 ft² · Sold $7.4M · May 2026
- 555 Byron St # 208$2M2 bd · 2 ba · 1,354 ft² · Sold $2M · Mar 2026
- 2745 Byron St4,310 ft² · Sold $2.2M · Feb 2026
- 2735 Byron St3,263 ft² · Sold $3M · Feb 2026
- 4148 Byron St3,401 ft² · Sold $2.9M · Jan 2026
- 555 Byron St # 105$1.9M2 bd · 2 ba · 1,548 ft² · Sold $1.9M · Nov 2025
- 1252 Byron St$2.7M2 bd · 2 ba · 1,364 ft² · Sold $2.6M · Oct 2025
- 221 Byron St$2.7M2 bd · 1 ba · 1,152 ft² · Sold $217K · Jul 2025
Closest homes
- 555 Byron St$1.9M0 ft · 2 bd · 2 ba · 1,548 ft² · Sold $1.9M · Nov 2025
- 555 Byron St$1.9M0 ft · 3 bd · 2.5 ba · 1,844 ft² · Sold $1.4M · Jun 2023
- 555 Byron St0 ft · 3 bd · 3 ba · 2,067 ft² · Sold $2.1M · Mar 2020
- 555 Byron St$2.6M0 ft · 2 bd · 2.5 ba · 2,042 ft² · Sold $2.4M · Aug 2022
- 555 Byron St$1.8M0 ft · 3 bd · 2.5 ba · 1,825 ft² · Sold $1.6M · May 2024
- 555 Byron St$1.9M0 ft · 3 bd · 2.5 ba · 1,825 ft² · Sold $1.7M · Sep 2023
- 555 Byron St$2.2M0 ft · 2 bd · 2.5 ba · 2,042 ft² · Sold $3M · Mar 2015
- 555 Byron St$1.4M0 ft · 2 bd · 2 ba · 1,354 ft² · Sold $1.1M · Jan 2019
More homes in Palo Alto 94301
- 655 Embarcadero Rd$3.6M4 bd · 2 ba · 1,920 ft² · Sold $1.8M · Oct 2026
- 1301 Bryant St$6M4 bd · 2 ba · 2,029 ft² · Sold $6M · Oct 2026
- 1432 Hamilton Ave$5.7M3 bd · 2 ba · 2,364 ft² · Sold $6.2M · Oct 2026
- 302 Channing Ave$3.5M2 bd · 2 ba · 1,782 ft² · Sold $3.4M · Oct 2026
- 911 Cowper St$2.4M3 bd · 3 ba · 1,700 ft² · Sold $2.4M · Oct 2026
- 103 Tennyson Ave3,371 ft² · Sold $2.5M · Oct 2026
- 536 Everett Ave3,596 ft² · Sold $2.9M · Oct 2026
- 1751 Alma St1,716 ft² · Sold $1.8M · Oct 2026
- 101 Alma St$1.7M2 bd · 2 ba · 1,032 ft² · Sold $1.6M · Oct 2026
- 2535 South Ct$3.7M2 bd · 2 ba · 1,403 ft² · Sold $4.1M · Oct 2026
- 834 Addison Ave$4.1M4 bd · 2 ba · 2,136 ft² · Sold $4.4M · Oct 2026
- 160 Santa Rita Ave$2.9M2 bd · 2 ba · 1,190 ft² · Sold $2.8M · Oct 2026
Assigned schools
Explore the area
See this home in context
Open 555 Byron St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.
Open in map