Nature and Form of Contract of Sale

A contract of sale happens when one party agrees to transfer ownership of something specific to another party who agrees to pay for it. These contracts can be either absolute (no conditions attached) or conditional (with specific conditions).

The contract of sale has several key characteristics. It's consensual (formed by agreement), bilateral (obligations on both sides), and onerous (exchange of value). It's also commutative (equal exchange), nominate (has a specific name in civil law), and principal (stands on its own).

Three essential elements must exist for a valid sale:

• Consent - meeting of minds between parties
• Object - something specific being sold
• Cause - price in money or equivalent

Remember: A contract of sale progresses through three stages: negotiation (offer being considered), perfection (agreement on object and price), and consummation (when parties perform their obligations).

In contrast to a regular sale, a contract to sell means the seller retains ownership until the buyer pays the full price. This is a crucial distinction that affects your rights as either buyer or seller.

Special Types of Sales

Sales can take various forms depending on what's being sold and the conditions attached. Emptio Rei Speratae is when you buy something that doesn't exist yet but is expected to (like future crops). This sale depends on the thing eventually existing.

Emptio Spei is different - you're buying a mere hope or chance, and the contract is valid regardless of whether the thing comes into existence. However, selling a "vain hope" (something impossible) is void.

Goods can be classified as:

• Existing goods - already owned by the seller
• Future goods - to be manufactured or acquired after the contract

When money changes hands early in a sale, it matters whether it's:

• Earnest money - an advance payment deducted from the total price
• Option money - paid to secure the right to buy, but not deducted from the price

Quick tip: In a barter contract, parties exchange one thing for another, rather than for money. If both goods and money are involved, the transaction is still considered barter if the value of the thing exceeds the money amount.

A contract for "piece of work" is different from a sale - it involves goods manufactured specifically for a customer, not for the general market.

Special Sales Arrangements

Sale by auction is finalized when the auctioneer announces its completion by the fall of the hammer. Before this moment, any bidder can retract their bid, and the auctioneer may withdraw goods (unless the auction was announced "without reserve").

According to Article 1477, ownership transfers to the buyer upon delivery of the goods. Sellers may bid in their own auctions only if this right was reserved, notice was given, and such bidding isn't prohibited.

Sale by description occurs when a seller describes items in a particular way, and the buyer relies on this description without knowing if it's true. If the delivered goods don't match the description, the contract may be rescinded.

Sale by sample means the parties contracted based solely on a sample, with the understanding that the bulk will match it. The seller warrants that delivered goods will conform to the sample in kind, character, and quality.

Important distinction: In a "sale or return" contract, the buyer becomes owner upon delivery but has the option to return the goods instead of paying. In a "sale on trial or approval," ownership remains with the seller until the buyer approves the goods or fails to return them.

These arrangements provide different levels of flexibility and protection for both buyers and sellers, depending on the nature of the transaction.

Price Requirements and Effects

For a valid contract of sale, the price must meet four key requirements:

• Real - not simulated or fictitious
• Certain or ascertainable - expressed as a specific amount or determinable by reference to something certain
• In money or equivalent - monetary value
• Manner of payment agreed upon - disagreement on payment terms equals failure to agree on price

Gross inadequacy of price (when the price is extremely low compared to fair market value) doesn't invalidate a contract of sale by itself. However, it might indicate a defect in consent or that the parties actually intended something else, like a donation.

On the other hand, a simulated price (where there's no real agreement on price) renders the contract void, though it might be shown to actually be a donation or other type of contract.

Watch out: Failing to determine the price generally makes the contract void. However, if the thing has already been delivered and used by the buyer, they must pay a reasonable price for it.

Article 1479 establishes that "a promise to buy and sell a determinate thing for a price certain is reciprocally demandable." This means both parties can demand performance of a properly formed sales contract.

Capacity to Buy or Sell

As a general rule, all persons (natural or juridical) who can bind themselves have legal capacity to enter into contracts of sale. However, there are important exceptions to this rule.

There are two types of incapacity:

• Absolute incapacity - persons who cannot enter into any sales contracts
• Relative incapacity - persons who, under specific circumstances, cannot buy certain property

When it comes to "necessaries" (items essential for sustenance, dwelling, clothing, medical care, education, and transportation), even persons without capacity to act must pay a reasonable price if these are sold and delivered to them.

Article 1490 prohibits spouses from selling property to each other, except when:

• They've agreed on separation of property in their marriage
• There has been judicial separation of property

Important restrictions: Article 1491 lists several persons who cannot acquire property through purchase (even at public or judicial auctions):

• Guardians cannot buy property of persons under their guardianship
• Agents cannot buy property they administer
• Executors/administrators cannot buy estate property
• Public officials cannot buy state property
• Judges, prosecutors and court employees cannot buy property involved in litigation

These restrictions prevent conflicts of interest and protect vulnerable parties in transactions.

Effects When the Thing Sold Has Been Lost

What happens when the object of a sale is lost before or during the contract? Article 1493 addresses this: if the thing is completely lost when the contract is perfected, the contract has no effect. This makes sense - you can't sell something that doesn't exist!

A thing is considered "lost" when it perishes, goes out of commerce, or disappears in a way that its existence is unknown or it cannot be recovered.

If the thing is only partially lost, the buyer has two options:

• Withdraw from the contract entirely
• Demand the remaining part, paying a proportional price

Article 1494 covers situations where specific goods have perished or deteriorated without the seller's knowledge. The buyer can:

1. Consider the sale avoided
2. Treat the sale as valid for the existing undeteriorated goods (if divisible)

Remember: These rules protect buyers from paying for goods that no longer exist or have substantially changed in character at the time of contract perfection.

The key timing here is at perfection of the contract - when both parties agree on the object and price. Loss before this point affects the validity of the entire agreement.

Obligations of the Vendor

Article 1495 establishes that the seller has several fundamental obligations:

• Transfer ownership of the thing sold
• Deliver the thing
• Warrant the thing against eviction and hidden defects
• Take care of the thing pending delivery
• Pay for the execution and registration of the sale (unless agreed otherwise)

Delivery occurs when the thing sold is placed under the buyer's control and possession. There are two main types of delivery:

1. Actual or Real delivery - physical transfer of the thing

2. Legal or Constructive delivery:

   • By executing a public document
   • By symbolic delivery (traditio symbolica) - using a token to represent the thing
   • By traditio longa manu - pointing to the thing at the buyer's disposal
   • By brevi manu - when the buyer already possesses the thing under another title
   • By constitutum possessorium - when the seller continues possession but in another capacity

Important principle: According to Article 1505, no one can transfer better title than they have. However, if the owner's conduct suggests the seller had authority to sell, the buyer might acquire good title.

Remember that ownership is generally acquired only upon actual or constructive delivery to the buyer - not merely by agreement.

Rights of Unpaid Sellers

An unpaid seller is one who hasn't been paid the full price or received payment via a negotiable instrument that was later dishonored. Article 1586 grants unpaid sellers several important remedies:

1. A lien on goods (right to retain them) while they remain in the seller's possession
2. Right to stop goods in transit if the buyer becomes insolvent
3. Right to resell the goods
4. Right to rescind the sale

To stop goods in transit, several conditions must be met:

• The seller must be unpaid
• The buyer must be insolvent
• The goods must be in transit
• The seller must take possession or give notice to the carrier
• The seller must bear delivery expenses after exercising this right

Important concepts: A condition is a future uncertain event that determines whether a contract obligation exists. A warranty is a representation by the seller about the thing's character, quality, or ownership.

Warranties can be:

• Express - specific statements or promises about the thing
• Implied - unspoken assurances about the thing

The doctrine of caveat emptor ("buyer beware") places responsibility on the buyer to examine purchases carefully. It applies especially to execution sales, where sheriffs don't warrant property titles.

Special Rules for Sale of Animals

The sale of animals has special warranty rules:

• A redhibitory defect (hidden defect) in one animal doesn't allow redhibition of others sold in the same transaction
• There's no warranty against hidden defects for animals sold at fairs, public auctions, or livestock sold as condemned
• Sale of animals with contagious diseases is void
• If an animal dies within 3 days of purchase, the seller is liable if the disease existed at the time of contract

Note: A redhibitory defect in animals must be so subtle that even expert professional inspection can't discover it.

The prescription period for a redhibitory action (legal claim) for animals is 40 days from delivery to the buyer. This is a much shorter timeframe than for other goods, reflecting the unique nature of livestock transactions.

These special rules acknowledge both the unique challenges in determining an animal's health and the higher risks involved in livestock transactions compared to other goods.

Obligations of the Vendee (Buyer)

The buyer has two primary obligations:

• Accept delivery of the thing sold
• Pay the price at the time and place stipulated

If the time and place aren't specified, payment must be made at the time and place of delivery. This balances the interests of both parties in the transaction.

Acceptance means assenting to the terms of an offer, either explicitly or implicitly through conduct. It can be:

1. Express acceptance - explicitly telling the seller you've accepted the goods
2. Implied acceptance - acting in a way that's inconsistent with the seller's ownership, or keeping the goods for an unreasonable time without rejecting them

Regarding delivery and payment, several important rules apply:

• The seller isn't required to deliver until the price is paid, nor is the buyer required to pay before delivery (unless agreed otherwise)
• If stipulated, the buyer must pay at the designated time and place
• Without stipulation about place, delivery happens wherever the thing was when the contract was formed

Important consequence: If a buyer unjustifiably refuses to accept goods, ownership still passes to them when the goods are placed at their disposal. This prevents buyers from avoiding ownership simply by refusing delivery.

This fair balance of obligations ensures that neither party can take advantage of the other in the performance of the contract.