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9817 Mainsail Dr, Gaithersburg, MD 20879 Property Records

Montgomery County property record for 9817 Mainsail Dr, Gaithersburg, MD 20879 · Last verified August 2026

Property Summary

Property TypeSingle Family Home
Details2.5 ba · 2,560 sqft · built 1986
Lot Size0.51 acres (22,220 sqft)
Owner2 Individual Names on File
Last Sale$158,500 (Oct 1986)
Tax Bill$5,700 (2025)
Deeds & MortgagesJun 2021 Mortgage
Flood ZoneZone X (minimal risk)
APN09-02482081

Property Details

APN / Parcel Number

Primary APN09-02482081
Alternative APN
  • 02482081

Interior

Full Baths2.5 Baths
Half Baths1 Half Bath
Stories2 Stories
Building Area2,560 sqft Living Area
Gross Area2,980 sqft
1st Floor Area1,514 sqft
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 1986
Effective Year BuiltEffective 1986
Architectural StyleBi-Level
Exterior MaterialSiding
Roof MaterialComposition Shingle
Lot Area22,220 sqft (0.51 acres)
Garage TypeAttached
Garage Area420 sqft
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Cooling SystemCentral
Heating SystemHVAC
SewerMunicipal

Location & Zoning

Account Number02482081
Street Address9817 MAINSAIL DR
CityGAITHERSBURG
StateMD
Zip20879-1139
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionGOSHEN ESTATES
Legal SubdivisionGOSHEN ESTATES
Legal BlockS
Legal Lot Number42
JurisdictionMONTGOMERY MD
Township / Civil Division9
Census Block Group1
Census Block1001
Census Tract700810

Owner

Source: Montgomery County records · APN 09-02482081

Assessment roll updated August 17, 2026 · Last verified August 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record2 Individual Names on File
Mailing Address9817 MAINSAIL DR, GAITHERSBURG, MD 20879-1139
OccupancyOwner Occupied
Owner TypeIndividual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names2 Verified Names on Deed
Last SaleOct 02, 1986 · Amount on Record
Deed SaleOct 02, 1986 · Amount on Record
Deed Book / Page7327 / 191
Record UpdatedSep 20, 2026

June 2021: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionMONTGOMERY MD
Property Address9817 MAINSAIL DR, GAITHERSBURG, MD 20879-1139
Transaction TypeMortgage
Record UpdatedJul 01, 2021
Title CompanyBOSTON NATIONAL TITLE

Transferred To (Grantee/Buyer)

NameVerified Name
Address9817 MAINSAIL DR, GAITHERSBURG, MD 20879-1139

Mortgage

Document Number0632910365
DateJun 17, 2021
Book Page63291/365
Lender
NameGUARANTEED RATE INC
TypeMortgage Company
AddressCHICAGO, IL 60613
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term358 Months
DueApr 01, 2051

Tax Assessment & Valuation

Source: Montgomery County records · Assessment roll updated August 17, 2026 · Last verified August 2026

Property Jurisdictions

TypeName
StateMaryland
CountyMontgomery County
Unified School DistrictMontgomery County Public Schools (PK - 12)

Tax Bill & Assessment History

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

YearTax BillAssessed ValueAssessed Market Value
2026$575,000 (+9.84%) Land $228,200 Building $346,800$575,000 (-) Land $228,200 Building $346,800
2025$5,700.00 (+30.88%)$523,500 (+24.49%)$575,000 (+36.74%) Land $228,200 Building $346,800
2023$420,500 Land $224,400 Building $196,100$420,500 Land $224,400 Building $196,100
2022$4,355.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Montgomery County (24031C), updated April 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 240317008101, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood ZoneZone X
Special Flood Hazard AreaNo
Flood HazardMinimal
500-Year FloodplainNo
Nearest Special Flood Hazard AreaZone A, within 500 ft
Nearby Flood Policies1 in force

Wildfire

Wildfire RiskLow
above 20% of the US · above 41% of Maryland
Wildfire LikelihoodAbout 1 in 10,000 per year
ExposureDirect
burnable vegetation at the parcel

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Internet Providers

Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 493 locations within about half a mile of this property

ProviderTechnologyDownload / Upload (Mbps)
VerizonFiber2,300 / 2,300
XfinityCable2,000 / 250

May also be available at this address: T-Mobile USA. Availability varies by address; speeds are provider-advertised maximums, not measured.

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