Real estate law is the body of rules that governs how land and the structures attached to it are owned, used, shared, limited, and transferred. It draws on state property statutes, local zoning codes, federal tax and civil rights laws, and centuries of common-law doctrine. Whether you are buying a first home, co-owning a cabin with siblings, inheriting farmland, or leasing out a storefront, the same core concepts shape what you actually hold and what you can do with it. The rules vary by state, but the fundamentals below apply broadly across the United States.
What Counts as Real Property
The starting line in property law is the split between real property and personal property. Real property covers the land itself, everything beneath it (mineral deposits, groundwater), and everything permanently attached above it. Houses, barns, and office buildings qualify because they are built to stay. Trees and perennial crops are real property until someone harvests them.
Personal property is movable: cars, furniture, equipment, inventory. The categories follow different rules for taxation, transfer, and lending. A land deed and a car title work nothing alike, and selling a couch takes no written contract.
The line blurs when someone attaches movable property to a building in a way that looks permanent. A furnace bolted into a basement, built-in shelving, a pizza oven cemented to a restaurant floor. Courts call these fixtures and typically weigh three factors: how the item was attached, whether it was adapted to the property’s specific use, and whether the installer intended it to be permanent. Intention tends to carry the most weight, and courts infer it from the circumstances rather than from what the owner later claims. A fixture transfers with the real property in a sale unless the contract specifically excludes it.
How Ownership Is Structured
Owning real property is not a single, uniform concept. The law divides ownership into categories called estates, each defining how long and under what conditions you hold your interest.
Fee simple absolute is the most complete form. You can use, sell, gift, or pass the property to your heirs, with no expiration and no conditions. Ownership continues indefinitely unless you transfer it or lose it through a tax sale or similar legal process.1Legal Information Institute. Fee Simple
A fee simple defeasible looks similar but carries conditions that can end ownership. A deed might grant land to an organization only for educational purposes; if the organization switches to a different use, title can revert to the original grantor or their heirs. These show up most often in charitable gifts and grants with strings attached.
Leasehold estates are temporary. A lease gives a tenant the right to possess and use property for a set term or on a recurring basis like month-to-month. The landlord keeps a reversionary interest, so the property returns at the end of the lease. Lease agreements must comply with state landlord-tenant laws covering security deposits, maintenance, and eviction.
A life estate lasts for the duration of a specific person’s life, usually the person living on the property.2Legal Information Institute. Life Estate When that person dies, the property passes to a designated remainderman or reverts to the original owner’s estate. A parent might keep a life estate in the family home while naming a child as remainderman, locking in a place to live now and inheritance later.
The Bundle of Rights
Ownership is often described as holding a bundle of sticks, each stick a distinct legal right: possession (occupying the land), control (deciding how to use it), enjoyment (using it without outside interference), exclusion (keeping others off), and disposition (selling, leasing, or giving it away). You can hold all five at once, or hand individual sticks to different people.
A landlord does exactly that at every lease signing. The tenant receives possession and enjoyment. The landlord keeps disposition and can sell the building even with the tenant in place. During the lease, the landlord generally cannot enter without notice except in emergencies, because the right to exclude has shifted to the tenant.
Exclusion is the foundation of trespass law and lets owners fence land and control access. Control lets you decide to farm, build, or leave the land alone, subject to zoning. Disposition is what makes real estate a financial asset: you can sell it, pledge it as collateral for a mortgage, or place it in a trust.
Mineral and Air Rights
Owning land does not always mean owning everything above and below it. Mineral and surface rights can be split into separate estates, a situation known as a split estate. Once severed, mineral rights and surface rights can be bought and sold independently and often end up in different hands over time.
In most states, the mineral estate is dominant over the surface estate. The mineral owner has the right to reasonable use of the surface for exploration and extraction, even without the surface owner’s consent. Operators are encouraged to negotiate surface-use agreements covering crop loss and damage, but if no agreement is reached, extraction can proceed anyway. If you are buying rural land, confirming whether the mineral rights have been severed is one of the most important steps in your due diligence.
Owning Property With Other People
When more than one person owns the same property, the form of co-ownership controls each owner’s rights, what happens at death, and how disputes get resolved.
Tenancy in common is the default in most states. Each owner holds an undivided fractional interest in the whole, and shares do not have to be equal: one person might own 70% and another 30%.3Legal Information Institute. Tenancy in Common There is no right of survivorship, so a deceased owner’s share passes through their will or state intestacy law rather than to the other owners. Any co-owner can sell or mortgage their individual interest without the others’ consent, and any one of them can file a partition action to force a physical division or a sale when things break down.
Joint tenancy requires equal shares and includes a right of survivorship. When one joint tenant dies, their interest passes directly to the surviving owners outside of probate.4Legal Information Institute. Joint Tenancy Four conditions must coexist for a valid joint tenancy: owners must take their interest at the same time, through the same deed, in equal shares, and with equal rights to possess the whole. Break any of these unities and the arrangement converts to tenancy in common.
Tenancy by the entirety is available only to married couples and is recognized in roughly 25 states plus the District of Columbia. It works like a joint tenancy with survivorship, with an extra layer: neither spouse can sell or mortgage the property without the other’s consent, and creditors of only one spouse generally cannot force a sale to satisfy that spouse’s individual debts. This makes it a strong shield for the family home.
Nine states follow a community property system, which treats most assets acquired during a marriage as equally owned by both spouses regardless of who earned the income or whose name sits on the title.5Legal Information Institute. Community Property Property owned before the marriage or received as a gift or inheritance during the marriage generally stays separate. If you own real estate in a community property state, both spouses typically must sign off on a sale or mortgage of community assets.
Claims and Limits That Travel With the Land
Owning property does not mean owning it free of outside claims. Encumbrances are legal interests held by someone other than the owner that either limit the property’s use or create financial obligations. Most run with the land, so they survive a sale and bind the new owner. A thorough title search is the main way buyers discover them before closing.
Easements
An easement gives a non-owner the right to use part of your land for a specific purpose. Utility easements for power lines and sewer pipes are the most common. A neighbor might hold an easement to use a shared driveway or to cross your land to reach a public road.
Easements can arise through written agreement, by implication (when a parcel is divided in a way that makes access impossible without one), or by prescription. A prescriptive easement arises when someone uses your land openly, continuously, and without your permission for a period set by state law.6Legal Information Institute. Prescriptive Easement That period ranges from a few years to over twenty depending on the state. Easements can affect property value significantly when they restrict where you can build or what you can do on the affected area.
Liens
A lien is a financial claim against your property that secures a debt. Fail to pay property taxes and the local government places a tax lien. Property tax liens hold special priority status and generally take precedence over nearly all other claims, including mortgages.7Internal Revenue Service. IRM 5.17.2 Federal Tax Liens Contractors who improve your property and go unpaid can file a mechanic’s lien. Any unpaid lienholder may eventually force a foreclosure sale.
Federal tax liens follow their own rules. When you owe the IRS and the debt is assessed, a lien arises against all your property. The IRS must file a Notice of Federal Tax Lien to establish priority against later purchasers and secured creditors, and the general rule is first in time, first in right. Certain interests hold superpriority status and can jump ahead of a filed federal tax lien, including state and local property tax liens on real property and residential mechanic’s liens below a threshold amount.
Covenants, Deed Restrictions, and Encroachments
Private agreements can also limit how you use your property. Covenants and deed restrictions are rules typically imposed by developers or homeowner associations to maintain a neighborhood’s character. They might dictate exterior paint colors, fence heights, or whether a commercial vehicle can park in the driveway. Violations can produce daily fines or court orders stopping the prohibited activity.
An encroachment happens when a neighbor’s structure (a fence, a garage, an overhanging roof) crosses onto your land. The simplest fix is a conversation and a written agreement. If that fails, you can grant an easement or license, sell the strip to the neighbor, or sue to establish ownership and compel removal. Dealing with encroachments early matters, because waiting too long can let the use ripen into an adverse possession or prescriptive easement claim.
Zoning and Land Use
Even with no private encumbrances, government zoning places broad restrictions on what you can do with your property. Local governments divide their territory into zones, each permitting specific uses: residential, commercial, industrial, agricultural, or mixed. Zoning rules also control building heights, minimum lot sizes, setbacks from property lines, parking requirements, and density limits.
If you want to use your property in a way the current zoning does not allow, you generally have two options. A special use permit (sometimes called a conditional use permit) allows a use the code already contemplates for that district, provided you meet certain conditions designed to minimize impact on neighbors. You do not need to show hardship. A variance is permission to deviate from a specific requirement like a setback or lot-size minimum, and it is harder to get: you usually must show that strict compliance would create an unreasonable hardship unique to your property, not a mere inconvenience.
How Real Property Changes Hands
The main instrument for voluntarily transferring real property is a deed, which must be in writing to satisfy the Statute of Frauds.8Legal Information Institute. Statute of Frauds A general warranty deed gives the buyer the strongest protection: the seller guarantees that the title is free of hidden defects and encumbrances and agrees to defend the buyer against future claims. A quitclaim deed is the opposite: the seller transfers whatever interest they currently hold, if any, with no guarantees. Quitclaim deeds are common between family members and divorcing spouses. A buyer purchasing from a stranger should insist on a warranty deed.
A valid transfer requires the grantor’s signature, delivery of the deed to the grantee, and acceptance. Recording the deed in the local land records office is not strictly required for the transfer to be valid between the two parties, but it is essential for protecting the buyer against the rest of the world. Recording creates constructive notice: everyone is legally presumed to know about the transfer whether they checked the records or not. Most states use a race-notice system, meaning a later buyer who records first and had no knowledge of the earlier unrecorded transfer takes priority. Skipping the recording step is how people lose property to double sales and fraudulent conveyances.
Real Estate Contracts
Before any deed is signed, buyer and seller enter into a purchase agreement. For enforceability, it needs mutual agreement on terms, consideration (the price), a clear legal description of the property, competent parties of legal age and sound mind, a lawful purpose, and signatures.
Most purchase agreements include contingencies that let the buyer walk away under specific conditions without losing their deposit. Common ones protect the buyer if financing falls through, if the inspection turns up serious problems, or if the appraisal comes in below the agreed price. A title contingency allows the buyer to confirm clear ownership. Sellers sometimes accept a contingency giving the buyer time to sell their current home first, though this weakens the offer in a competitive market.
Federal law layers on disclosure duties. Sellers of any home built before 1978 must give the buyer information about known lead-based paint hazards, an EPA-approved lead hazard information pamphlet, and any available inspection reports. The buyer must receive at least ten days to conduct a lead paint inspection, though the period can be adjusted by written agreement.9eCFR. Disclosure of Known Lead-Based Paint and/or Lead-Based Paint Hazards Upon Sale or Lease of Residential Property The contract must include a specific lead warning statement and signed acknowledgments from both parties, and sellers and agents must keep copies for at least three years.
Adverse Possession
Property can change hands involuntarily through adverse possession. If someone occupies your land openly, continuously, exclusively, and without your permission for the period set by state statute, they can take legal title.10Legal Information Institute. Adverse Possession The possession must be hostile (meaning it infringes on the true owner’s rights, not that it involves personal animosity) and obvious enough that a diligent owner would notice. Statutory periods vary widely, from as few as five years in some states to twenty or more in others. Tenants cannot claim adverse possession, because their use is with the owner’s permission.
Eminent Domain
Government entities can take private property for public use under the power of eminent domain. The Fifth Amendment requires just compensation, which is typically the property’s fair market value as determined by independent appraisal.11Constitution Annotated. Amdt5.10.1 Overview of Takings Clause The courts have read “public use” broadly to include highways, schools, utilities, and even economic development projects. Owners can challenge both the taking itself and the amount offered, but outright blocking a lawful taking is rare.
Due-on-Sale Clauses
Transferring a property that still carries a mortgage can trigger the lender’s right to demand full repayment. Most residential mortgages include a due-on-sale clause giving the lender this power on any sale or transfer.12Legal Information Institute. Due-on-Sale Clause Federal law carves out exceptions where the lender cannot enforce the clause, including transfers to a spouse or child, transfers resulting from divorce, transfers at the death of a joint tenant, and transfers into a living trust where the borrower remains a beneficiary.13Office of the Law Revision Counsel. 12 USC 1701j-3 – Preemption of Due-on-Sale Prohibitions Ignoring a due-on-sale clause can lead the lender to call the entire loan due, which can trigger foreclosure if you cannot pay it off.
Title and Title Insurance
A marketable title is one free from reasonable doubt about who owns the property and what claims might exist against it. Mortgages, adverse possession claims, zoning violations, and unresolved liens can all make a title unmarketable.14Legal Information Institute. Marketable Title Every seller makes an implied promise to deliver marketable title even if the contract never says so, and a buyer who finds title defects before closing can usually refuse to proceed until they are cleared.
Title insurance exists because no title search catches everything. A standard owner’s policy protects against defects that existed before the purchase but went undiscovered: forged signatures in the chain of title, unknown heirs with a claim, recording errors, undisclosed liens. Extended policies add coverage for issues like encroachments, zoning violations affecting existing structures, and problems with building permits. The cost is a one-time premium paid at closing. Lenders almost always require a separate lender’s policy to protect their mortgage interest, and buyers can buy an owner’s policy to protect their own equity.
Taxes That Come With Ownership
Owning real property creates ongoing tax obligations and opens up significant tax savings when you eventually sell.
Property Taxes and Homestead Exemptions
Local governments fund schools, roads, and services primarily through ad valorem property taxes, calculated as a percentage of your property’s assessed fair market value.15Legal Information Institute. Ad Valorem Tax A tax assessor sets the value and the local government applies its rate (sometimes called a mill rate). Most states cap the maximum rate or limit annual assessment increases. Failing to pay property taxes is one of the surest ways to lose your home, because tax liens take priority over almost every other claim on the property.
Most states offer a homestead exemption that reduces the taxable value of your primary residence. Sizes vary dramatically, from a few hundred dollars of assessed value to well over $100,000. Many states also provide homestead protections against creditors, shielding some or all of your home equity from forced sale to satisfy unsecured debts like credit cards and medical bills. These creditor protections do not apply to mortgages, property tax liens, or mechanic’s liens, which remain enforceable regardless of any homestead claim.
Capital Gains and the Section 121 Exclusion
When you sell real property for more than you paid, the profit is a capital gain subject to federal income tax. Long-term capital gains on property held more than one year are taxed at 0%, 15%, or 20% depending on your taxable income, generally well below ordinary income tax rates.
The biggest tax break available to homeowners is the Section 121 exclusion. If you owned and used a home as your primary residence for at least two of the five years before the sale, you can exclude up to $250,000 of gain from your income. Married couples filing jointly can exclude up to $500,000 if at least one spouse meets the ownership test and both meet the use test.16Office of the Law Revision Counsel. 26 USC 121 – Exclusion of Gain From Sale of Principal Residence The two years of ownership and use do not need to be consecutive. For many homeowners, this exclusion means paying zero federal tax on the sale of their home.
1031 Like-Kind Exchanges
Investment and business properties do not qualify for the Section 121 exclusion, but owners can defer capital gains tax entirely through a like-kind exchange under Section 1031. Instead of selling and paying tax on the gain, you exchange the property for another of equal or greater value. In practice, exchanges are rarely simultaneous swaps. The seller typically uses a qualified intermediary to hold the sale proceeds and then reinvests them in a replacement property.
The deadlines are strict and generally cannot be extended except for a presidentially declared disaster. You have 45 days from the sale of your original property to identify potential replacement properties in writing, and 180 days (or the due date of your tax return for that year, whichever comes first) to complete the purchase.17Office of the Law Revision Counsel. 26 USC 1031 – Exchange of Real Property Held for Productive Use or Investment Miss either deadline and the entire gain becomes taxable. Section 1031 applies only to real property held for business or investment; it does not cover a personal residence or property held primarily for resale.
Fair Housing Rules
Federal law prohibits discrimination in the sale, rental, and financing of housing based on race, color, religion, sex, national origin, familial status, and disability.18Office of the Law Revision Counsel. 42 USC 3604 – Discrimination in the Sale or Rental of Housing and Other Prohibited Practices These protections apply to landlords, sellers, real estate agents, mortgage lenders, and anyone involved in a housing transaction. A landlord cannot refuse to rent to a family with children, a seller cannot reject an offer based on a buyer’s religion, and an agent cannot steer clients toward or away from particular neighborhoods based on race.
The Fair Housing Act also requires landlords to allow reasonable modifications for tenants with disabilities at the tenant’s expense, and to make reasonable accommodations in rules and policies when necessary for a disabled tenant to use the housing equally.19eCFR. Discriminatory Conduct Under the Fair Housing Act Many states and cities add protected categories such as sexual orientation, gender identity, source of income, or age. Violations can lead to complaints with the U.S. Department of Housing and Urban Development, private lawsuits, and substantial damages including compensatory awards and civil penalties.