CondominiumResidential
300 Los Alamos Rd
SANTA ROSA, CA 95409
1,226 ft²
Lot SizeThe size of the land the home sits on, from county records.
1973
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
Built 19733 floors18 units786–1,328 ft²
$6.8M
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.
$378K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$362
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.
-25.6%vs the Santa Rosa ZIP median sale $/ft² ($487)
Sales Performance
$350K
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
+18.6%
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
1
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
5.6%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+3.9%per yeartypical hold 8.4 yrsfrom 35 same-unit resales
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
19891993200020042009201520202025
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
19891993200020042009201520202025
55 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.
1 bd2 bd
1 bed
9 units$325K · $364/ft²
2 bed
9 units$403K · $361/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.
1 bd · 1 ba · 938 ft²
4 units$338K · $361/ft²
2 bd · 2 ba · 1,107 ft²
3 units$407K · $368/ft²
1 bd · 1 ba · 786 ft²
2 units$290K · $369/ft²
1 bd · 1 ba · 904 ft²
2 units$320K · $354/ft²
2 bd · 1 ba · 1,107 ft²
2 units$396K · $358/ft²
2 bd · 2 ba · 1,328 ft²
2 units$482K · $363/ft²
One-off layouts
3 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.
$288K–$311K
3 units
$324K–$329K
3 units
$348K–$352K
2 units
$377K–$379K
2 units
$389K–$407K
5 units
$461K–$485K
3 units
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
$362/ft²6 units · +0%
Floor 2
$365/ft²6 units · +1%
Floor 3
$357/ft²6 units · -2%
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 ·04
$382/ft²3 units · +5%
Line ·02
$379/ft²3 units · +5%
Line ·05
$362/ft²3 units · +0%
Line ·01
$353/ft²3 units · -3%
Line ·03
$352/ft²3 units · -3%
Line ·06
$339/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.94%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.33%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.9.7 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.0%
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.52%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$385,103
Median tax billThe middle annual property tax bill among the building's units.$3,500
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 306Dec 19, 2025$350,000$306/ft²Unit 105Jan 3, 2025$295,000$375/ft²Unit 102Mar 29, 2024$342,822$365/ft²Unit 204Dec 9, 2022$365,000$330/ft²Unit 305Jan 26, 2021$325,000$285/ft²Unit 204Aug 20, 2020$335,000$303/ft²Unit 302Sep 3, 2019$370,000$279/ft²Unit 303Mar 11, 2019$394,500$297/ft²Unit 104Apr 30, 2018$335,000$303/ft²Unit 202Aug 15, 2016$275,000$293/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.41
96
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
82
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
27
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.94 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.minimal
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
CountySonoma
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1990
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.Central
CoolingThe type of cooling or air conditioning in the home.None
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No
Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.
EMH
Austin Creek Elementary SchoolA+
Elementary · Grades KG–6 · 0.6 mi
Spring Lake Middle SchoolB-
Middle · Grades 7–8 · 1.3 mi
Maria Carrillo High SchoolA+
High · Grades 9–12 · 2.1 mi
District: Santa Rosa High School District
Neighborhood · ZIP 95409These 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.105
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.83
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.459
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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.24,776
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.847 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$99,190
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$126,830
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.44 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.78%
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.
300 Los Alamos Rd Apt 101
2 bd · 1 ba · 1,107 ft²
300 Los Alamos Rd Apt 102
1 bd · 1 ba · 938 ft²
300 Los Alamos Rd Apt 103
1 bd · 1 ba · 938 ft²
300 Los Alamos Rd # 104
2 bd · 1.5 ba · 1,107 ft²
300 Los Alamos Rd Apt 105
1 bd · 1 ba · 786 ft²
300 Los Alamos Rd Apt 106
1 bd · 1 ba · 786 ft²
300 Los Alamos Rd Apt 201
2 bd · 1 ba · 1,107 ft²
300 Los Alamos Rd Apt 202
1 bd · 1 ba · 938 ft²
300 Los Alamos Rd Apt 203
1 bd · 1 ba · 938 ft²
300 Los Alamos Rd Apt 204
2 bd · 2 ba · 1,107 ft²
300 Los Alamos Rd Apt 205
1 bd · 1 ba · 904 ft²
300 Los Alamos Rd Apt 206
1 bd · 1 ba · 904 ft²
300 Los Alamos Rd Apt 301
2 bd · 2 ba · 1,107 ft²
300 Los Alamos Rd Apt 302
2 bd · 2 ba · 1,328 ft²
300 Los Alamos Rd Apt 303
2 bd · 2 ba · 1,328 ft²
300 Los Alamos Rd Apt 304
2 bd · 2 ba · 1,107 ft²
300 Los Alamos Rd Apt 305
1 bd · 1 ba · 1,142 ft²
300 Los Alamos Rd Apt 306
2 bd · 1 ba · 1,142 ft²
Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.
About 300 Los Alamos Rd
How many units are in 300 Los Alamos Rd, Santa Rosa, CA?
300 Los Alamos Rd, Santa Rosa, CA has 18 residential units across 3 floors, built in 1973, according to county assessor records.
What is a unit at 300 Los Alamos Rd, Santa Rosa, CA worth?
The median TopHap Estimate across the 18 units at 300 Los Alamos Rd, Santa Rosa, CA is $378,474. That works out to $362 per square foot. Units run from 786 to 1,328 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.
Is 300 Los Alamos Rd, Santa Rosa, CA expensive for Santa Rosa?
Units at 300 Los Alamos Rd, Santa Rosa, CA carry a median of $362 per square foot, 26% below the Santa Rosa median of $487 per square foot.
How often do units sell at 300 Los Alamos Rd, Santa Rosa, CA?
1 units at 300 Los Alamos Rd, Santa Rosa, CA sold in the last 12 months, out of 55 recorded arms-length sales all time. That is a turnover rate of 5.6% of the building per year. The median sale over that period was $350K.
Have units at 300 Los Alamos Rd, Santa Rosa, CA appreciated?
Across 35 repeat sales of the same unit, 300 Los Alamos Rd, Santa Rosa, CA returned a median 3.9% 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 8.4 years.
What floor plans does 300 Los Alamos Rd, Santa Rosa, CA have?
The most common plan at 300 Los Alamos Rd, Santa Rosa, CA is a 1-bedroom of 938 square feet, repeated 4 times, with a median estimate of $338,496. TopHap identifies 6 recurring plans in the building.
More homes on Los Alamos Rd Apt 303
- 1483 Los Alamos Rd3 bd · 2.5 ba · 2,343 ft² · Sold $280K · Jul 2026
- 1111 Los Alamos Rd4 bd · 1 ba · 1,228 ft² · Sold $510K · Jul 2026
- 1921 Los Alamos Rd3 bd · 2.5 ba · 4,011 ft² · Sold $308K · Apr 2026
- 314 Los Alamos Rd$457K2 bd · 1 ba · 1,011 ft² · Sold $459K · Feb 2026
- 300 Los Alamos Rd Apt 306$348K2 bd · 1 ba · 1,142 ft² · Sold $350K · Dec 2025
- 238 Los Alamos Rd$450K2 bd · 2 ba · 1,323 ft² · Sold $452K · Dec 2025
- 250 Los Alamos Rd$517K3 bd · 3 ba · 1,584 ft² · Sold Dec 2025
- 502 Los Alamos Rd$1.2M5 bd · 3 ba · 4,018 ft² · Sold $1.2M · Dec 2025
- 328 Los Alamos Rd$473K2 bd · 2 ba · 1,220 ft² · Sold $340K · Jul 2025
- 394 Los Alamos Rd$464K2 bd · 2 ba · 1,220 ft² · Sold $468K · Jun 2025
- 1236 Los Alamos Rd$1.1M26.64 ac · Sold $108K · Jun 2025
- 376 Los Alamos Rd$466K2 bd · 1 ba · 1,011 ft² · Sold $470K · Feb 2025
Closest homes
- 300 Los Alamos Rd Apt 103$324K0 ft · 1 bd · 1 ba · 938 ft² · Sold $190K · Jul 2014
- 300 Los Alamos Rd Apt 203$325K0 ft · 1 bd · 1 ba · 938 ft² · Sold $158K · Mar 2015
- 300 Los Alamos Rd Apt 102$352K28 ft · 1 bd · 1 ba · 938 ft² · Sold $343K · Mar 2024
- 300 Los Alamos Rd Apt 302$479K28 ft · 2 bd · 2 ba · 1,328 ft² · Sold $370K · Sep 2019
- 300 Los Alamos Rd Apt 202$377K28 ft · 1 bd · 1 ba · 938 ft² · Sold Jun 2017
- 300 Los Alamos Rd$400K31 ft · 2 bd · 1.5 ba · 1,107 ft² · Sold $335K · Apr 2018
- 300 Los Alamos Rd Apt 204$407K34 ft · 2 bd · 2 ba · 1,107 ft² · Sold $365K · Dec 2022
- 300 Los Alamos Rd Apt 304$461K34 ft · 2 bd · 2 ba · 1,107 ft² · Sold $289K · Sep 2002
More homes in Santa Rosa 95409
- 6514 Meadowgreen Pl$859K2 bd · 2 ba · 1,870 ft² · Sold $850K · Jul 2026
- 360 Twin Lakes Dr$725K2 bd · 2 ba · 1,686 ft² · Sold $710K · Jul 2026
- 5972 San Aleso Ct$1M4 bd · 2 ba · 2,049 ft² · Sold $998K · Jul 2026
- 6505 Stonecroft Ter$994K2 bd · 2 ba · 1,955 ft² · Sold $1M · Jul 2026
- 274 Beech Ave$725K3 bd · 2 ba · 1,551 ft² · Sold $725K · Jul 2026
- 6311 Melita Rd$935K3 bd · 2.5 ba · 1,713 ft² · Sold $940K · Jul 2026
- 496 Oak Brook Ct$850K2 bd · 2 ba · 1,401 ft² · Sold $820K · Jul 2026
- 113 Valley Oaks Dr$799K2 bd · 2 ba · 1,870 ft² · Sold $808K · Jul 2026
- 417 Hillsdale Dr$919K2 bd · 2 ba · 1,870 ft² · Sold $950K · Jul 2026
- 318 Schiappino St$999K4 bd · 2.5 ba · 2,468 ft² · Sold $990K · Jul 2026
- 5565 Highway 12$699K2 bd · 2 ba · 1,466 ft² · Sold $750K · Jul 2026
- 4414 Vine St$801K3 bd · 2 ba · 1,707 ft² · Sold $750K · Jul 2026
Assigned schools
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