NOT LISTED FOR SALE

Estimated Value: $1,094,000 - $1,532,000

2 Beds
3 Baths
2,093 Sq Ft
$652/Sq Ft Est. Value

About This Home

This home is located at 178 Helm Unkn, the Sea Ranch, CA 95497 and is currently estimated at $1,365,501, approximately $652 per square foot. 178 Helm Unkn is a home located in Sonoma County with nearby schools including Point Arena High School.

Ownership History

Date Name Owned For Owner Type

Purchase Details

Closed on
Sep 5, 2025
Sold by
Shaw Polly Nicole
Bought by
Polly Nicole Shaw Trust and Shaw
Current Estimated Value
$1,365,501

Purchase Details

Closed on
Jan 3, 2018
Sold by
Robins Scott T and Byarlyrobins Belinda P
Bought by
Shaw Polly N

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$345,000
Interest Rate
3.92%
Mortgage Type
New Conventional

Purchase Details

Closed on
Dec 11, 2016
Sold by
Goodman Janet K and Goodman Family Bypass Trust
Bought by
Robins Scott T and Byerly Robins Belinda P

Purchase Details

Closed on
Nov 20, 2013
Sold by
Goodman Janet K and Goodman Family Revocable Trust
Bought by
Goodman Family Revocable Trust and Goodman Family Bypass Trust

Purchase Details

Closed on
Jan 3, 2000
Sold by
Dean Corliss P and Dean Sandra L
Bought by
Goodman Ronald L and Goodman Janet K

Purchase Details

Closed on
Nov 4, 1998
Sold by
Piket Richard J and Piket Bonnie C
Bought by
Dean Corliss P and Dean Sandra L

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$312,000
Interest Rate
6.42%

Purchase Details

Closed on
Feb 18, 1998
Sold by
Piket Richard J and Piket Bonnie C
Bought by
Piket Richard J and Piket Bonnie C

Purchase Details

Closed on
Aug 24, 1994
Sold by
Richardson John K and Richardson Marilyn S
Bought by
Piket Richard J and Piket Bonnie C

Purchase Details

Closed on
Mar 8, 1994
Sold by
Richardson John K and Richardson Marilyn S
Bought by
Richardson John K and Richardson Marilyn S

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$94,880
Interest Rate
7%
Mortgage Type
Seller Take Back

Purchase Details

Closed on
Mar 3, 1994
Sold by
Forrester Donald D and Forrester Elizabeth V
Bought by
Richardson John K and Richardson Marilyn S

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$94,880
Interest Rate
7%
Mortgage Type
Seller Take Back
Source: Public Records

Range of Values:

--
Value Increase
--
Percent Increase
--
Adjusted for Inflation
Collateral Analytics

Collateral Analytics Collateral Analytics AVMs (Automated Valuation Model) employ a number of statistical approaches combined with neighborhood-specific comparable selection guarantees the most up-to-date and precise valuations.

Not Available

Collateral Analytics does not have data for the current month. Please view the chart for historical values.

ICE

ICE Mortgage Technology ICE Mortgage Technology’s AVM (Automated Valuation Model) is a state-of-the-art online residential property valuation tool that provides a quick and accurate estimate of the value of almost any home in the U.S.

Not Available

ICE Mortgage Technology does not have data for the current month. Please view the chart for historical values.

First American

First American First American Data & Analytics’ next-generation AVM combines unrivaled data assets with a blended ensemble of valuation models to produce highly accurate, reliable valuations you can trust.

Not Available

First American does not have data for the current month. Please view the chart for historical values.

Quantarium

Quantarium Quantarium’s valuation service, repeatedly proven the industry’s most accurate and comprehensive, is supercharged with a self-learning and auto-tuning AI engine that continually becomes smarter and more accurate as it processes daily inputs from the industry’s leading RE data lake.

Not Available

Quantarium does not have data for the current month. Please view the chart for historical values.

Average Value
Not Available
List Price
Sold Price
Create a Home Valuation Report for This Property
The Home Valuation Report is an in-depth analysis detailing your home's value as well as a comparison with similar homes in the area

Home Values in the Area

Source: Public Records

Average Home Value in this Area





Source: Public Records

Purchase History

Date Buyer Sale Price Title Company
Polly Nicole Shaw Trust -- None Listed On Document
Shaw Polly N $845,000 Fidelity National Title Co
Robins Scott T $725,000 Fidelity National Title Co
Goodman Family Revocable Trust -- None Available
Goodman Ronald L $495,000 North American Title Co
Dean Corliss P $390,000 First American Title
Piket Richard J -- --
Piket Richard J $227,000 Northwestern Title
Richardson John K -- Northwestern Title Security
Richardson John K $114,000 Northwestern Title Security
Source: Public Records

Mortgage History

Date Status Borrower Loan Amount
Previous Owner Shaw Polly N $345,000
Previous Owner Dean Corliss P $312,000
Previous Owner Richardson John K $94,880
Source: Public Records

Tax History

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2025 $12,082 $961,460 $375,481 $585,979
2024 $12,082 $942,609 $368,119 $574,490
2023 $12,082 $924,127 $360,901 $563,226
2022 $11,212 $906,008 $353,825 $552,183
2021 $10,931 $888,244 $346,888 $541,356
2020 $10,923 $879,138 $343,332 $535,806
2019 $10,828 $861,900 $336,600 $525,300
2018 $9,446 $739,500 $295,800 $443,700
2017 $9,304 $725,000 $290,000 $435,000
2016 $8,385 $642,691 $259,671 $383,020
2015 -- $633,038 $255,771 $377,267
2014 -- $620,638 $250,761 $369,877
Source: Public Records

Map

Your Personal Tour Guide

Ask me questions while you tour the home.