House Prices

Viejo Castilla San Marcos, CA House Prices & Home Values 2026


Average Data

average house price$711,509
average size per house1837 ft²
average price per ft²407 $ / ft²

07/05/2026 - The value range (VR) for house prices in Viejo Castilla San Marcos, CA is $386.65/ sqft to $427.35/ sqft. An average home with 1837 sqft costs approximately $744,370 to $822,724. San Marcos, CA includes 1 ZIP codes and it is located in San Diego county. The lowest prices are found in ZIP 92078, while the highest are in ZIP 92078. The average price per sqare feet is $407. Our analysis is based on 19 property listings.

Avergage prices by ZIP codes Viejo Castilla San Marcos

92078451 $ / ft²




Historical development of home values in Viejo Castilla San Marcos

Year Estimated value (USD) Change vs. 2025
2010 $330,438 -53.6%
2011 $317,660 -55.4%
2012 $316,804 -55.5%
2013 $328,646 -53.8%
2014 $344,987 -51.5%
2015 $362,693 -49.0%
2016 $381,621 -46.4%
2017 $402,219 -43.5%
2018 $424,456 -40.3%
2019 $444,137 -37.6%
2020 $467,097 -34.4%
2021 $531,272 -25.3%
2022 $619,344 -13.0%
2023 $653,127 -8.2%
2024 $690,911 -2.9%
2025 $711,509 0.0%

Graph: estimated home values in Viejo Castilla San Marcos over time (USD)



Example: 100% financing house in Viejo Castilla San Marcos

Loan amount: $711,509

Interest rate: 6.29%

Fixed monthly payment: $4,398.48

Breakdown in the 1st month:
Interest portion: $3,728.31  –  Principal portion: $670.18

Yearly breakdown (100% financing)

Year Interest per year ($) Principal per year ($) Remaining balance at year-end ($)
1 $44,503.82 $8,277.98 $703,231.02
2 $43,968.03 $8,813.77 $694,417.25
3 $43,397.57 $9,384.23 $685,033.02
4 $42,790.18 $9,991.62 $675,041.40
5 $42,143.48 $10,638.32 $664,403.09
6 $41,454.92 $11,326.87 $653,076.21
7 $40,721.80 $12,060.00 $641,016.22
8 $39,941.22 $12,840.57 $628,175.64
9 $39,110.13 $13,671.67 $614,503.98
10 $38,225.24 $14,556.56 $599,947.42
11 $37,283.08 $15,498.72 $584,448.70
12 $36,279.94 $16,501.86 $567,946.84
13 $35,211.87 $17,569.93 $550,376.91
14 $34,074.67 $18,707.13 $531,669.78
15 $32,863.86 $19,917.94 $511,751.84
16 $31,574.69 $21,207.11 $490,544.73
17 $30,202.07 $22,579.72 $467,965.01
18 $28,740.62 $24,041.18 $443,923.83
19 $27,184.57 $25,597.22 $418,326.61
20 $25,527.81 $27,253.99 $391,072.62
21 $23,763.82 $29,017.98 $362,054.65
22 $21,885.65 $30,896.14 $331,158.50
23 $19,885.92 $32,895.87 $298,262.63
24 $17,756.76 $35,025.03 $263,237.59
25 $15,489.79 $37,292.00 $225,945.59
26 $13,076.10 $39,705.70 $186,239.89
27 $10,506.18 $42,275.62 $143,964.27
28 $7,769.92 $45,011.88 $98,952.40
29 $4,856.56 $47,925.24 $51,027.16
30 $1,754.64 $51,027.16 $0.00

Note: The calculation is based on a standard annuity mortgage with a fixed monthly payment over the entire term. Extra payments, interest rate changes, and additional purchase costs (e.g. taxes, notary fees) are not included.


How to sell in Viejo Castilla San Marcos, CA


1500 sqft3900 sqft
Ø selling price$774,163$1,646,856
Ø fast selling$703,785$1,482,170
Ø high price sale$844,542$1,811,542

In 2026, houses in Viejo Castilla San Marcos, CA will be offered at an average price of $407 per square foot. A 1,500 sqft home priced at $774,163 is 24.10% more expensive per square foot than a 3,900 sqft home priced at $1,646,856. Home prices in Viejo Castilla San Marcos, CA vary significantly depending on the property’s condition and exact location. For a quick sale, a 2,700 sqft home should be listed at around $1,140,131. Sellers who can wait longer may achieve a higher price of up to $1,393,494.


Viejo Castilla, San Marcos, CA Neighborhood Guide

Overview

Viejo Castilla in San Marcos, CA is a quiet, well-kept neighborhood that blends suburban comfort with North County convenience. Buyers appreciate its tree-lined streets, friendly vibe, and proximity to everyday essentials.

Location and Lifestyle

Located near shopping, dining, and local parks, the community makes daily errands and weekend recreation simple.
Residents enjoy walkable sidewalks, nearby trails, and quick access to regional destinations throughout North County San Diego.

Real Estate and Homes for Sale

Real estate in Viejo Castilla typically features low-maintenance residences suited to both first-time buyers and downsizers. Searchers looking for homes for sale in Viejo Castilla will find competitive prices for San Marcos along with strong rental and ownership demand.

Schools and Amenities

Families value access to well-regarded San Marcos schools and a variety of youth sports, libraries, and community programs. Nearby amenities include grocery stores, fitness centers, medical offices, and casual eateries that keep daily life convenient.

Things to Do and Commute

Weekend options range from exploring local parks and breweries to quick trips to coastal beaches via CA-78. With its central location, friendly atmosphere, and solid value, Viejo Castilla is a standout choice for San Marcos real estate.



FAQ – Home Values in Viejo Castilla San Marcos

What is the median home value in Viejo Castilla San Marcos in 2026?

In 2026, the typical home value in Viejo Castilla San Marcos is about $711,509 for an average home size of 1837 square feet. This corresponds to an average price of roughly $407 per square foot.

What is the average cost per square foot in Viejo Castilla San Marcos?

In 2026, homes in Viejo Castilla San Marcos sell for an average of around $407 per square foot, with a typical range between $386.65 and $427.35 per square foot, depending on the property’s location, condition, and lot size.

What is the average home size in Viejo Castilla?

The average home size in Viejo Castilla San Marcos is about 1837 square feet, with an estimated 2026 value around $711,509.



Neighborhoods close to Viejo Castilla San Marcos, CA

Shadowridge Vista, CA309 $ / ft²
Woods Valley Valley Center, CA249 $ / ft²
Sunshine Summit Warner Springs, CA302 $ / ft²
Eden Gardens (La Colonia) Solana Beach, CA1011 $ / ft²
Carlton Hills Santee, CA153 $ / ft²
Mesa Grande Santa Ysabel, CA627 $ / ft²
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