House Prices

Grass Island Guilford, CT House Prices & Home Values 2026


Average Data

average house price$757,628
average size per house2381 ft²
average price per ft²331 $ / ft²

06/26/2026 - The value range (VR) for house prices in Grass Island Guilford, CT is $314.45/ sqft to $347.55/ sqft. An average home with 2381 sqft costs approximately $777,905 to $859,790. Guilford, CT includes 1 ZIP codes and it is located in New Haven county. The lowest prices are found in ZIP 06437, while the highest are in ZIP 06437. The average price per sqare feet is $331. Our analysis is based on 9 property listings.

Avergage prices by ZIP codes Grass Island Guilford

06437405 $ / ft²




Historical development of home values in Grass Island Guilford

Year Estimated value (USD) Change vs. 2025
2010 $351,856 -53.6%
2011 $338,250 -55.4%
2012 $337,339 -55.5%
2013 $349,948 -53.8%
2014 $367,349 -51.5%
2015 $386,203 -49.0%
2016 $406,357 -46.4%
2017 $428,290 -43.5%
2018 $451,968 -40.3%
2019 $472,925 -37.6%
2020 $497,373 -34.4%
2021 $565,708 -25.3%
2022 $659,489 -13.0%
2023 $695,462 -8.2%
2024 $735,695 -2.9%
2025 $757,628 0.0%

Graph: estimated home values in Grass Island Guilford over time (USD)



Example: 100% financing house in Grass Island Guilford

Loan amount: $757,628

Interest rate: 6.23%

Fixed monthly payment: $4,656.96

Breakdown in the 1st month:
Interest portion: $3,935.88  –  Principal portion: $721.09

Yearly breakdown (100% financing)

Year Interest per year ($) Principal per year ($) Remaining balance at year-end ($)
1 $46,978.96 $8,904.62 $748,723.38
2 $46,407.71 $9,475.87 $739,247.51
3 $45,799.81 $10,083.77 $729,163.74
4 $45,152.91 $10,730.67 $718,433.07
5 $44,464.51 $11,419.07 $707,014.00
6 $43,731.95 $12,151.63 $694,862.37
7 $42,952.39 $12,931.19 $681,931.18
8 $42,122.82 $13,760.75 $668,170.43
9 $41,240.04 $14,643.54 $653,526.89
10 $40,300.62 $15,582.96 $637,943.93
11 $39,300.94 $16,582.64 $621,361.29
12 $38,237.12 $17,646.46 $603,714.83
13 $37,105.06 $18,778.52 $584,936.31
14 $35,900.37 $19,983.21 $564,953.10
15 $34,618.40 $21,265.18 $543,687.92
16 $33,254.19 $22,629.39 $521,058.53
17 $31,802.46 $24,081.12 $496,977.41
18 $30,257.59 $25,625.98 $471,351.42
19 $28,613.62 $27,269.95 $444,081.47
20 $26,864.19 $29,019.39 $415,062.08
21 $25,002.53 $30,881.05 $384,181.03
22 $23,021.43 $32,862.14 $351,318.89
23 $20,913.25 $34,970.33 $316,348.56
24 $18,669.82 $37,213.76 $279,134.79
25 $16,282.46 $39,601.12 $239,533.68
26 $13,741.96 $42,141.62 $197,392.06
27 $11,038.47 $44,845.11 $152,546.95
28 $8,161.55 $47,722.03 $104,824.92
29 $5,100.06 $50,783.52 $54,041.40
30 $1,842.18 $54,041.40 $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 Grass Island Guilford, CT


1500 sqft3900 sqft
Ø selling price$624,195$1,327,833
Ø fast selling$567,450$1,195,050
Ø high price sale$680,940$1,460,616

In 2026, houses in Grass Island Guilford, CT will be offered at an average price of $331 per square foot. A 1,500 sqft home priced at $624,195 is 23.90% more expensive per square foot than a 3,900 sqft home priced at $1,327,833. Home prices in Grass Island Guilford, CT 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 $919,269. Sellers who can wait longer may achieve a higher price of up to $1,123,551.

FAQ – Home Values in Grass Island Guilford

What is the median home value in Grass Island Guilford in 2026?

In 2026, the typical home value in Grass Island Guilford is about $757,628 for an average home size of 2381 square feet. This corresponds to an average price of roughly $331 per square foot.

What is the average cost per square foot in Grass Island Guilford?

In 2026, homes in Grass Island Guilford sell for an average of around $331 per square foot, with a typical range between $314.45 and $347.55 per square foot, depending on the property’s location, condition, and lot size.

What is the average home size in Grass Island?

The average home size in Grass Island Guilford is about 2381 square feet, with an estimated 2026 value around $757,628.



Neighborhoods close to Grass Island Guilford, CT

Haddam Center Haddam, CT208 $ / ft²
Higganum Center Higganum, CT143 $ / ft²
Madison Center Madison, CT266 $ / ft²
Essex Village Essex, CT280 $ / ft²
Lake Pocotopaug East Hampton, CT189 $ / ft²
East Haddam Village East Haddam, CT147 $ / ft²
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