Unibit 
A conical drill bit designed to drill a larger hole the further it is pushed into the subject material. 

Uniform Commercial Code (UCC) 
Group of laws, which standardize the state laws applicable to commercial transactions. 

Uniform Load 
A load that is distributed evenly over a given area. 

Uniform Residential Appraisal Report (URAR) 
The standard form which is used for reporting the appraisal of a dwelling and provides numerous checklists, definitions and certifications. 

Uniform Residential Landlord and Tenant Act 
Legislation dealing with landlord-tenant contracts and relationships and provides protection in 13 states to renters. 

Uniform Settlement Statement 
Form prescribed by the Real Estate Settlement Procedures Act for Federally Related Mortgages and must be prepared at the Closing of Title and must contain certain relevant closing information. Both buyer and seller are given copies. 

Uniform Standards of Professional Appraisal Practices (UNPAP) 
Set of requirements, formulated and adhered to by the members of the Appraisal Foundation. 

Unilateral Contract 
One-sided contract where, even if one party makes a promise, the second party is not legally required to perform, but may do so, thus obligating the first party. 

Unilateral Listing
Listing of property that is open and has no one real estate agent who has the sole right to sell the property. 

Unimproved Land 
Raw land in its natural state that has no installed improvements or structures.

Unincorporated Group 
Association of persons not treated as a corporation, such as a limited partnership. 

Union
1. A trade association of workers created to leverage political and bargaining leverage. 
2. A joining or combining. 
3. A plumbing fitting used to join lengths of pipe. The union has female threads at both ends to allow two pipes to be connected. 

Unit
Segregated part of a structure, i.e. one apartment in an apartment building or an office in a commercial building. 

Unit Cost 
The cost of a single item on a construction budget, for example one 2x4x8' stud. The unit cost is multiplied by the number of units required for the job to determine the total cost. 

Unit in Place Method 
Valuation of property based on its replacement cost. Cost of major elements per square foot multiplied by amount of square feet is the estimate of building cost. 

Unit Rise 
1. The rise, in inches, of a slope over a 12-inch run. 
2. The vertical distance from the tread of one stair to the tread of the next. 

Unities
Unity of interest, possession, time and title that must be necessary to form a joint tenancy. 

Unity
Legal dictate necessary for property to be owned as joint tenants. 

Unity of Interest 
Joint tenants must acquire their interest by the same conveyance and with the same interest.

Unity of Possession
Joint tenants must have equal rights to possession of the entire property. 

Unity of Time
Joint tenants must acquire their title simultaneously. 

Unity of Title 
Joint tenants must acquire their interest from the same deed or will. 

Unjust Enrichment
Benefiting from the work of another, without giving compensation. 

Unlawful Detainer
Illegally holding on to or keeping the property of another. 

Unrealized Gain
Increase in the value of property while it is being held. Gain is only realized upon sale. 

Unrecorded Deed 
Deed transferring ownership from one person to another but that is not officially recorded. 

Unrippable Rock 
Rock that cannot be removed from a site without blasting.