Find the Loudoun Parcel, Verify the Value, and Complete the Tax Task
Search Loudoun County real estate by street address, 12-character Parcel Identification Number or tax map number, then open the detailed record to review ownership, deed references, legal description, sales, land, house characteristics, 2026 assessment values, land-use status, special tax districts and payment history.
This guide goes beyond a basic directory link. It explains the actual iasWorld search quirks, how to use WebLogis, what Virginia’s 100% fair-market assessment means, the current $0.805 real-property tax rate, the December 7, 2026 payment deadline, expired 2026 appeal dates, senior and disability relief, land-use rollback risks and the separate Clerk system for recorded deeds.
Quick answer: start with Loudoun’s official iasWorld parcel database
Search the official Loudoun County Real Estate Tax, Assessment & Parcel Database by property address, Parcel ID Number or tax map number. Open the correct parcel, verify its 12-character PIN and physical location, then save the assessment, tax-district and deed information before moving to payment, GIS, relief or land records.
Current Loudoun County real-estate facts
The official parcel portal says its data is updated weekly. Its current search interface also provides Advanced Search, Combined Search, parcel mapping, Neighborhood Sales, Tax Payment/History and land-use information.
Choose the Loudoun property task you need
Use the section that matches the problem instead of opening several county systems at random.
Assessment, payment, deeds and maps belong to different offices
Parcel data
Relief
Land use
Payment
Posting
Collections
Trusts
Judgments
Plats
Adjoiners
Layers
Aerials
Equity
Market value
Hearing
Your question |
Start here |
What it provides |
Important limit |
|---|---|---|---|
What is the property’s assessed value? |
Commissioner of the Revenue |
Annual fair-market assessment and property characteristics. |
The Commissioner does not collect your payment. |
How much tax is due now? |
Treasurer |
Current bill, payment posting, delinquency and receipts. |
The Treasurer does not set your market value. |
Who is shown as owner? |
iasWorld parcel profile |
Owner display, mailing address and deed references. |
Use recorded land records for legal title research. |
Where is the deed or deed of trust? |
Circuit Court Clerk |
Recorded deeds, deeds of trust, judgments, plats and satisfactions. |
Index research does not guarantee clear title. |
Where is the parcel on a map? |
WebLogis |
Parcel, aerial, adjoining-parcel and environmental context. |
GIS lines are not professional boundary surveys. |
Can my 2026 assessment be reduced? |
Commissioner review / BOE |
Administrative and formal assessment review. |
The regular 2026 filing deadlines have already passed. |
Do I qualify for senior/disability relief? |
Exemptions & Deferrals Division |
Eligibility, applications and relief determination. |
Income and net-worth rules are specific to the program year. |
Search by address, 12-character PIN or tax map number
- Enter the house number.
- Enter the main street name.
- Leave the street type off first.
- Add quadrant or unit only when necessary.
- Use the wildcard if spelling is uncertain.
- Use the 12-character PIN from a bill or assessment.
- Enter it with or without dashes.
- Use the entire PIN for an exact result.
- Use * for partial PIN searches.
- Verify the address after opening the record.
- Copy the tax-map number exactly.
- Keep slashes and letters where shown.
- Use * when looking for a tax-map group.
- Check all matching parcels.
- Save the PIN from the correct result.
Open the full parcel record
iasWorld search tricks that save failed searches
Portal behavior |
What to do |
Why it matters |
|---|---|---|
Street-type matching |
Leave RD, ST, DR, CT, LN, AVE and similar suffixes off the first search. |
The official portal says address searches work best without the street suffix. |
Wildcard |
Use * before, after or within a partial string. |
Useful for uncertain street spelling, PIN fragments and tax-map groups. |
PIN length |
Expect a 12-character Parcel ID. |
A missing or extra digit can point to the wrong record or no result. |
PIN punctuation |
Enter the PIN with or without dashes. |
The portal accepts both formats. |
Range search |
Use Advanced Search for criteria such as year-built, tax-map ranges or stories. |
The ordinary tabs are not designed for range searches. |
Data timing |
Check the “Data Current as of” date shown in the portal. |
The county states parcel data is updated weekly rather than continuously. |
Condo parking / garage |
Search for separate parcel IDs if the unit has an assigned taxable garage or parking space. |
Loudoun warns these may be separately assessed parcels. |
Special districts |
Inspect Billing District, Special Ad Valorem Tax District and Special Project District. |
The base county tax rate may not be the parcel’s entire tax burden. |
No Loudoun parcel found? Diagnose the identifier first
Save more than the owner name and total value
Field / tab |
What it tells you |
What to do next |
|---|---|---|
Parcel ID / PIN |
12-character identifier connecting assessment, GIS and tax research. |
Save it before leaving the parcel record. |
Tax Map Number |
Loudoun map-reference identifier. |
Useful in older land and subdivision research. |
Owner / Mailing Address |
Ownership and mailing information used in assessment records. |
Use the Clerk’s actual deed for legal title verification. |
Instrument / Book / Page |
Recorded-document clues tied to ownership. |
Use these references in the Clerk’s land-record system. |
Values |
Annual assessed-value history. |
Compare 2026 with prior years and the January 1 value date. |
Sales / Transfers |
Recorded sale and transfer history used for research. |
Determine whether a transaction was a useful market comparable. |
Billing District |
Shows whether the parcel is associated with an incorporated town or county billing district. |
Check whether town tax applies in addition to county tax. |
Special Ad Valorem / Project District |
Identifies special taxing districts. |
Add the applicable district rate when estimating taxes. |
Land Use Status |
Shows special use-value treatment where applicable. |
Investigate rollback exposure before a purchase or use change. |
Residential / Detached Structures |
Building characteristics used in valuation. |
Report incorrect living area, bathrooms, finished basement or structures. |
Neighborhood Sales |
Nearby sales selected for market comparison research. |
Use comparable properties rather than simply the lowest sale price. |
Loudoun real estate is assessed at 100% of fair market value
The assessed value is the county’s market-value estimate
Virginia real estate is assessed at 100% of fair market value. Loudoun’s 2026 assessment represents estimated market value as of January 1, 2026 and reflects market activity examined from 2025.
The assessment is not the tax bill. The Board of Supervisors separately sets the tax rate, and a parcel may also have special district taxes, incorporated-town taxes, approved relief or land-use valuation.
2026 assessment date.
2026 assessments became available online.
Assessment notices began mailing to property owners.
Example: $800,000 regular-district assessment
$800,000 at 100% fair-market assessment.
8,000 taxable $100 units.
Estimated county real-property tax: $6,440 before special districts, town taxes, relief or adjustments.
The next 2026 Loudoun real-estate deadline is December 7
First-half real-estate taxes were due on this date.
The county’s 2026 assessment release identifies this as the second bill due date.
Loudoun’s normal second-half date is December 5; the exact 2026 bill controls.
Current 2026 regular-district rate
Pay through the Treasurer
The $0.805 county rate may not be the whole bill
Loudoun’s parcel Profile contains fields for Billing District, Special Ad Valorem Tax District and Special Project District. Check those fields before estimating a tax bill from the regular county rate.
Profile clue |
What it may indicate |
Current example |
What to do |
|---|---|---|---|
Billing District |
County or incorporated-town billing context. |
Leesburg, Purcellville, Middleburg and other incorporated towns can affect the total local burden. |
Review the actual bill rather than using only county rate. |
Special Ad Valorem Tax District |
An additional property-tax district. |
Dulles Rail Service District: $0.20 per $100. |
Add applicable rate to the parcel-specific estimate. |
Special Project District |
Special infrastructure-related taxing area. |
Route 28 Highway Improvement: $0.105 per $100. |
Confirm current district status in Profile/WebLogis. |
Town property |
Parcel sits inside an incorporated municipality. |
County administers billing/collection for most incorporated towns. |
Check all line items shown on the actual bill. |
The regular 2026 review and BOE filing deadlines have passed
Commissioner Application for Review deadline has passed.
Regular 2026 BOE filing deadline has passed.
Owners who timely filed may be in the hearing stage.
Evidence matched to the assessment problem
First-time senior or disability real-estate applicants still have a 2026 deadline
Household income |
Net financial worth |
Potential exemption |
|---|---|---|
$0–$87,000 |
$0–$498,000 |
100% |
$0–$79,000 |
$498,000.01–$635,000 |
50% |
$0–$71,000 |
$635,000.01–$771,000 |
50% |
$0–$63,000 |
$771,000.01–$907,000 |
50% |
$0–$55,000 |
$907,000.01–$1,028,000 |
50% |
Core eligibility checkpoints
Other real-estate exemptions to check
Veterans with a qualifying 100% service-connected total and permanent disability may receive a real-estate tax exemption on the primary home under program rules.
Qualified surviving spouses of disabled veterans or service members who died in the line of duty may qualify under separate rules.
Qualifying permitted and certified solar equipment can reduce taxable real-estate value under current Loudoun rules.
Farm, forest and open-space parcels need a rollback-tax check before purchase
Loudoun’s Land Use Assessment Program may value qualifying agricultural, horticultural, forest or open-space land according to use rather than full fair-market value. That can reduce current taxes, but deferred taxes may become payable when eligibility ends or land use changes.
Review the Land Use Status tab, qualifying use, acreage, renewal history and documentation requirements before assuming the special valuation will continue.
Ask for a rollback-tax estimate before a development, conversion, split or purchase when land-use valuation appears in parcel history.
The county requires an application at least 60 days before the tax year for which land-use taxation is sought.
Each parcel requires its own application.
A full renewal is required every six years.
Use or ownership changes can create deferred-tax liability.
Use WebLogis to understand the parcel—not to establish a legal boundary
Useful WebLogis actions
Begin typing an address and select the matching official location.
Show a parcel, adjoining parcels or parcels within a selected distance.
Retrieve parcel and plat-file information directly from the map.
Calculate mapped acreage of selected GIS features contained within the parcel.
Layer / tool |
Useful for |
Do not use it to prove |
|---|---|---|
Parcel Boundaries |
Locating the tract and adjoining parcels. |
Exact surveyed boundary. |
Aerial Imagery |
Visible structures, vegetation and site context. |
Legal access or easement rights. |
Floodplain / Environmental |
Preliminary development-risk research. |
Final regulatory determination. |
Zoning |
Initial zoning and overlay research. |
Building approval or guaranteed permitted use. |
Special Tax District |
Checking Route 28, Metrorail and related district context. |
The exact live tax balance. |
Platfile Info |
Locating recorded or mapped plat references. |
A current field survey. |
Move from the assessment deed reference to the actual recorded document
Loudoun County land records are maintained by the Clerk of the Circuit Court. Records from 1757 to the present can be researched through Clerk resources. The newer occasional-user remote system uses Document Technology Systems’ TrakRecord/Public Access platform.
Current land-record access costs
18 E. Market Street, Leesburg, VA 20176
Monday–Friday
8:00 a.m.–4:00 p.m.
1757 to present through Clerk research resources.
Before buying, inspect the parcel history—not only the current assessment
Call the office that can actually fix the problem
Office |
Use it for |
Contact |
Location / hours |
|---|---|---|---|
Commissioner of the Revenue — Real Estate |
Assessment, parcel data, characteristics, review, land use and tax-relief routing. |
1 Harrison St. SE 5th Floor, Mailstop 32B Leesburg, VA 20175 |
|
Treasurer |
Tax bills, balances, payment posting, receipts and collections. |
1 Harrison St. SE, 1st Floor Leesburg, VA 20175 Mon–Fri, 8:30 a.m.–5 p.m. |
|
Treasurer — Sterling |
In-person tax payments and Treasurer services. |
46000 Center Oak Plaza Sterling, VA 20166 Mon–Fri, 8:30 a.m.–5 p.m. |
|
Land Records Recording |
Recorded deeds, trusts, judgments, plats and document questions. |
18 E. Market Street Leesburg, VA 20176 Mon–Fri, 8 a.m.–4 p.m. |
|
Mapping & GIS |
PIN, tax-map and parcel-location assistance. |
Loudoun County mapping services
|
|
Tax Relief / Exemptions |
Senior, disability, veteran, land-use and other relief programs. |
Commissioner of the Revenue
|
|
Board of Equalization |
Formal real-estate assessment appeals. |
2026 regular filing deadline was June 1
|
Understand Virginia’s office structure before searching another locality
Use this guide when you need to compare Loudoun with another Virginia county or independent city. It explains Commissioner, Treasurer, Circuit Court and local GIS roles statewide.
Open Virginia property records guideUse the national directory when you are unsure whether a jurisdiction uses an assessor, commissioner, auditor, treasurer, recorder or clerk.
Open County Auditor DirectoryLoudoun County assessment and property records FAQs
How do I search Loudoun County property assessment records?
Use the official Loudoun County Real Estate Tax, Assessment & Parcel Database. Search by physical property address, 12-character Parcel ID Number or tax map number, then verify the PIN and physical location before relying on the result.
What software does Loudoun County use for property assessment search?
The official real-property public search is powered by iasWorld Public Access. Loudoun’s separate parcel mapping system is WebLogis.
What is the best way to search a Loudoun property by address?
Enter the street number and main street name first and leave off the street type such as Road, Street or Drive. The official portal recommends omitting the street suffix for better results and supports an asterisk wildcard when spelling is uncertain.
How long is a Loudoun County Parcel ID Number?
The iasWorld search instructions state that Loudoun Parcel ID Numbers are 12 characters long. They can be entered with or without dashes, and the asterisk wildcard can be used for partial PIN searches.
How is Loudoun County real estate assessed?
Virginia real estate is assessed at 100% of fair market value. Loudoun’s Tax Year 2026 assessment represents estimated fair market value as of January 1, 2026.
What is the Loudoun County real-property tax rate for 2026?
The adopted 2026 regular real-property tax rate is $0.805 per $100 of assessed value. Parcels in special tax districts or incorporated towns can have additional taxes, so check the parcel’s Billing District and special-district fields.
When are Loudoun County real-estate taxes due in 2026?
The first-half 2026 real-estate tax was due June 5, 2026. Loudoun’s 2026 assessment announcement states that the second-half bill is due December 7, 2026. The county’s standard calendar uses December 5, so the exact 2026 bill or live Treasurer account should control.
Can I still appeal my 2026 Loudoun property assessment?
The regular administrative-review deadline was March 16, 2026 and the Board of Equalization filing deadline was June 1, 2026. Both have passed. Contact the Commissioner or BOE if you have a special circumstance or need to understand any remaining legal review option.
Where can I find a Loudoun County deed or lien?
Use the Loudoun County Clerk of the Circuit Court land-record system. Occasional users can create a free account for basic index research, while document images cost $0.50 per page plus the applicable transaction convenience fee.
Are Loudoun WebLogis parcel lines legal boundaries?
No. WebLogis is useful for locating parcels, adjoining properties, aerial imagery and map layers, but exact legal boundaries should be verified with recorded plats, deeds and a professional survey.

Khushboo Bobade is the editor and digital publisher of CountyAuditors.org. She oversees the research and editorial process for the website, ensuring that information about county auditor offices, property records, and government resources is accurate, verified, and easy for visitors to understand.
10 Ohio Property Tax Calculators & Auditor Tools
Built specifically for Ohio's 35% assessment ratio, current DTE forms, and 2026 Homestead, Owner-Occupancy, CAUV, Conveyance Fee, and Board of Revision rules. Every number reflects verified Ohio Department of Taxation amounts.
Annual Tax Bill Estimator
OHIOApplies Ohio's 35% assessment ratio plus your county's effective millage tier — the actual math your auditor uses.
Homestead Reduction Calculator
DTE 105A2026 Ohio Homestead: $29,000 general or $58,000 enhanced (100% disabled vet, KIA spouse). OAGI under $41,000 required for non-veteran applicants.
Owner-Occupancy & Non-Business Credits
DTE 105CEvery Ohio owner-occupied home qualifies for the 2.5% Owner-Occupancy Credit plus the automatic 10% Non-Business Credit. Most owners don't realize these stack.
Conveyance Fee Calculator
ORC 322When you sell or transfer Ohio property, the auditor collects $1 state + up to $3 county per $1,000, plus $0.50 per parcel. Counties choose their rate.
CAUV Agricultural Savings
DTE 109Ohio's Current Agricultural Use Value cuts taxable value dramatically for farmland (10+ acres, or smaller with $2,500+ annual gross income).
Mill Rate Converter
Ohio tax rates appear three ways on auditor sites: mills, percent, or dollars per $1,000. Convert between them instantly.
Parcel Number Cleaner
Ohio's 88 counties each format parcels differently — Franklin uses 010-123456-00, Cuyahoga uses 001-23-456, Hamilton uses 100-0001-0001-00. Auto-detects.
35% Ratio Sanity Check
Ohio law sets taxable value at 35% of market value. If yours is significantly higher, you're a strong BOR appeal candidate.
BOR Appeal Savings
DTE 1A successful Board of Revision complaint typically cuts your value 10–20%. Filing is free and stays in effect until the next reappraisal.
BOR Deadline Countdown
MAR 31Ohio's statutory Board of Revision filing deadline is March 31 for the prior tax year. Miss it and you wait until next year — no extensions.
Verify with the official Ohio source
These calculators use the verified 2026 Ohio Department of Taxation amounts and statutory rules. For your exact bill, exemption status, and county-specific deadlines, always confirm with your county auditor and the Ohio Revised Code:
Estimates use Ohio's 35% statutory assessment ratio and effective tax rate tiers averaged across major Ohio counties. Your actual bill depends on local school levies, voted millage, inside vs. outside millage splits, House Bill 920 reduction factors (HB 920), and special assessments. The 2026 Homestead general amount ($29,000) and enhanced amount ($58,000) reflect HB 187 inflation indexing — your county auditor's office may show slightly different transitional figures. Nothing here is legal or tax advice. CountyAuditors.org is an independent informational directory, not affiliated with any county government.