The purpose of the Residential Medium Density RM District is to: 

1. allow continuation of permanent residential and transient housing in original residential Areas of Park City,
   
2. encourage new Development along an important corridor, that is Compatible with Historic Structures in the surrounding Area,
   
3. encourage the rehabilitation of existing Historic Structures,
   
4. encourage Development that provides a transition in Use and scale between the Historic District and the resort Developments,
   
5. encourage affordable housing,
   
6. encourage Development that minimizes the number of new driveways Accessing existing thoroughfares and minimizes the visibility of Parking Areas.

Uses in the RM District are limited to the following:

1. ALLOWED USES.
   
   1. Single Family Dwelling
      
   2. Duplex Dwelling
      
   3. Triplex Dwelling
      
   4. Secondary Living Quarters
      
   5. Lockout Unit¹ 
      
   6. Accessory Apartment² 
      
   7. Nightly Rental³ 
      
   8. Home Occupation
      
   9. Child Care, In-Home Babysitting⁴ 
      
   10. Child Care, Family Group⁴
       
   11. Accessory Building and Use
       
   12. Conservation Activity
       
   13. Agriculture
       
   14. Bed and Breakfast Inn
       
   15. Parking Area or Structure with four (4) or fewer spaces
       
   16. Internal Accessory Dwelling Unit⁹
       
2. CONDITIONAL USES.
   
   1. Multi-Unit Dwelling 
      
   2. Guest House, on Lot greater than one (1) acre 
      
   3. Group Care Facility
      
   4. Child Care Center⁴
      
   5. Public and Quasi-Public Institution, Church, and School
      
   6. Essential Municipal Public Utility Use, Facility, Service, and Structure
      
   7. Telecommunication Antenna⁵ 
      
   8. Satellite Dish Antenna, greater than thirty-nine inches (39") in diameter⁶ 
      
   9. Boarding House, Hostel
      
   10. Hotel, Minor⁷  
       
   11. Outdoor Event⁸ 
       
   12. Parking Area or Structure with five (5) or more spaces
       
   13. Temporary Improvement⁸
       
   14. Recreation Facility, Public and Private¹⁰
       
   15. Fences greater than six feet in Height from Final Grade⁸
   16. Residential and transient lodging Uses⁷
3. PROHIBITED USES. Any Use not listed above as an Allowed or Conditional Use is a prohibited Use.

¹Nightly rental of Lockout Units requires a Conditional Use permit.

²Requires an Administrative Permit. See Section 15-4-7, Accessory Apartments.

³Nightly Rentals do not include the Use of dwellings for Commercial Uses.

⁴See Section 15-4-9, Child Care and Child Care Facilities. Family Group Child Care and Child Care Center Uses require an Administrative Conditional Use permit.

⁵See Section 15-4-14, Telecommunications Facilities.

⁶See Section 15-4-13, Placement of Satellite Receiving Antennas.

⁷Subject to Master Planned Development approval. See Chapter 15-6.

⁸Requires an Administrative Conditional Use permit.

⁹See Section 15-4-7.1, Internal Accessory Dwelling Units.

¹⁰See Section 15-4-22, Outdoor Pickleball Courts in Residential Areas.

Except as may otherwise be provided in this Code, no Building Permit shall be issued for a Lot unless such Lot has the Area, width, and depth required, and Frontage on a Street shown as a private or Public Street on the Streets Master Plan or on a private easement connecting the Lot to a Street shown on the Streets Master Plan. 

All Development must comply with the following:

1. LOT SIZE. Minimum Lot Area for Residential Uses is as follows:
   
   

   Single Family Dwelling	2,812 sq. ft.
   Duplex Dwelling	3,750 sq. ft.
   Triplex Dwelling	4,687 sq. ft.
   Four-plex Dwelling	5,625 sq. ft.

   Minimum Lot Area for all other Uses shall be determined by the Planning Commission during the Conditional Use review.
   
   Developments consisting of more than four (4) Dwelling Units require a Lot Area at least equal to 5,625 square feet plus an additional 1,000 square feet per each additional Dwelling Unit over four (4) units. All Setback, height, parking, Open Space, and architectural requirements must be met. See Section 15-1-10, Conditional Use permit review.
   
2. LOT WIDTH. The minimum width of a Lot is 37.50 feet, measured fifteen feet (15') back from the Front Lot Line. In the case of unusual Lot configurations, Lot Width measurements shall be determined by the Planning Director. The Planning Commission may reduce the minimum Lot Width during review of a Master Planned Development.
   
3. FRONT SETBACK. 
   
   1. The minimum Front Setback for all Single Family, Duplex Dwellings, and Accessory Buildings is fifteen feet (15'). See 15-2.13-3(C)(3) for exception for Lots with a depth of seventy-five feet (75’) or less.
      
   2. New Front Facing Garages for Single-Family and Duplex Dwellings must be at least twenty feet (20') from the Front Lot Line. 
      
   3. The minimum Front Setback for Lots seventy-five feet (75') deep or less is ten feet (10'). 
      
   4. See Section 15-2.15-4 for special requirements for Tri-Plex and Multi-Unit Dwellings.
      
4. FRONT SETBACK EXCEPTIONS. The Front Setback must be open and free of any Structure except:
   
   1. Fences, walls, and retaining walls not more than four feet (4') in height, or as permitted in Section 15-4-2. On Corner Lots, Fences more than three feet (3') in height are prohibited within twenty-five feet (25') of the intersection at back of curb.
      
   2. Uncovered steps leading to the Main Building, provided, the steps are not more than four feet (4') in height from Final Grade, not including any required handrails, and do not cause any danger or hazard to traffic by obstructing the view of a Street or intersection.
      
   3. Decks, porches, and Bay Windows not more than ten feet (10') wide, projecting not more than five feet (5') into the Front Setback.
      
   4. Roof overhangs, eaves, and cornices projecting not more than three feet (3') into the Front Setback. 
      
   5. Sidewalks, patios, and pathways. 
      
   6. Driveways leading to a garage or approved Parking Area. No portion of a Front Yard, except for approved driveways, patios, allowed Parking Areas, and sidewalks, may be Hard-Surfaced or graveled.
      
   7. Circular driveways meeting all requirements stated in Section 15-3-4 herein.
      
5. REAR SETBACK. 
   
   1. The minimum Rear Setback for Single Family and Duplex Dwellings is ten feet (10').
      
   2. See Section 15-2.15-4 special requirements for Multi-Unit Dwellings.
      
6. REAR SETBACK EXCEPTIONS. The Rear Setback must be open and free of any Structure except:
   
   1. Bay Windows not more than ten feet (10') wide projecting not more than two feet (2') into the Rear Setback. 
      
   2. Chimneys not more than five feet (5') wide projecting not more than two feet (2') into the Rear Setback. 
      
   3. Window wells and light wells projecting not more than four feet (4') into the Rear Setback. 
      
   4. Roof overhangs and eaves projecting not more than three feet (3') into the Rear Setback.
      
   5. Window sills, belt courses, cornices, trim, and other ornamental features projecting not more than six inches (6") beyond the window or main Structure to which it is attached.
      
   6. Detached Accessory Buildings not more than eighteen feet (18') in height and maintaining a minimum Rear Setback of five feet (5'). Such Structures must not cover over fifty percent (50%) of the Rear Setback. See the following illustration:
      
   7. Hard-Surfaced Parking Areas subject to the same location requirements as a detached Accessory Building.
      
   8. Screened mechanical equipment, hot tubs, and similar Structures located at least five feet (5') from the Rear Lot Line.
      
   9. Fences, walls, and retaining walls not more than six feet (6') in height, or as permitted in Section 15-4-2. Retaining walls may have multiple steps, however, each exposed face cannot exceed six feet (6') in height and the horizontal distance between the walls, front face to rear face, must be at least three feet (3') and planted with approved vegetation. The Planning Director may approve minor deviations to the height and stepping requirements based on Site specific review.¹
      
   10. Patios, decks, pathways, steps, or similar Structures not more than thirty inches (30") above Final Grade, located at least five feet (5') from the Rear Lot Line.
       
7. SIDE SETBACK.
   
   1. The minimum Side Setback for any Single Family, Duplex Dwelling or Accessory Building is five feet (5').
      
   2. A Side Setback between connected Structures is not required where Structures are designed with a common wall on a Property Line, each Structure is located on an individual Lot, the Lots are burdened with a party wall agreement in a form approved by the City Attorney and Chief Building Official, all applicable Building and Fire Code requirements are met, and the Use is an Allowed or Conditional Use in the Zoning District.
      
      1. Exterior Side Setbacks shall be based on the required minimum Side Setback for each Lot; however the Planning Commission may consider increasing exterior Side Setbacks during Conditional Use Permit review to mitigate potential impacts on adjacent Property. Side Setback exceptions continue to apply.
         
   3. The minimum Side Setback for a detached Accessory Building not greater than eighteen feet (18') in height, located at least five feet (5') behind the front facade of the Main Building is three feet (3'). See teh following illustration:
      
   4. On Corner Lots, the Side Yard that faces a Street or platted Right-of-Way is considered a Front Yard, and the minimum Setback is ten feet (10') for both Main and Accessory Buildings.
      
   5. See Section 15-2.15-4 Special Requirements for Multi-Unit Dwellings.
      
8. SIDE SETBACK EXCEPTIONS. The Side Setback must be open and free of any Structure except:
   1. Bay windows not more than ten feet (10') wide projecting not more than two feet (2') into the Side Setback. 
      
   2. Chimneys not more than five feet (5') wide projecting not more than two feet (2') into the Side Setback. 
      
   3. Window wells and light wells projecting not more than four feet (4') into the Side Setback.
      
   4. Roof overhangs and eaves projecting not more than three feet (3') into the Side Setback.
      
   5. Window sills, belt courses, cornices, trim, and other ornamental features projecting not more than six inches (6") beyond the window or main Structure to which it is attached.
      
   6. Patios, decks, pathways, steps, and similar Structures not more than thirty inches (30") in height above Final Grade, provided there is at least a one foot (1') Setback to the Side Lot Line.
      
   7. Fences, walls, and retaining walls not more than six feet (6') in height, or as permitted in Section 15-4-2. Retaining walls may have multiple steps, however each exposed face cannot exceed six feet (6') in height and the horizontal distance between the walls, front face to rear face, must be at least three feet (3') and planted with approved vegetation. The Planning Director may approve minor deviations to the height and stepping requirements based on Site specific review.¹
      
   8. Driveways leading to an approved garage or Parking Area maintaining a three foot (3') landscaped Setback to the Side Lot Line.
      
   9. Paths, patios, and steps connecting to a City stairway or path.
      
   10. Screened mechanical equipment, hot tubs, and similar Structures located a minimum of five feet (5') from the Side Lot Line.
       
9. SNOW RELEASE. Site plans and Building design must resolve snow release issues to the satisfaction of the Chief Building Official.
10. CLEAR VIEW OF INTERSECTION. No visual obstruction in excess of two feet (2') in height above Road Grade shall be placed on any Corner Lot within the Site Distance Triangle. A reasonable number of trees may be allowed, if pruned high enough to permit automobile drivers an unobstructed view. This provision must not require changes in the Natural Grade on the Site.

¹Fences and walls greater than six feet (6') in height require an administrative Conditional Use permit

1. FRONT SETBACK. The Front Setback for any Triplex, or Multi-Unit Dwelling is twenty feet (20'). All new Front Facing Garages shall be a minimum of twenty-five feet (25') from the Front Property Line. All Yards fronting any Street are considered Front Yards for the purposes of determining Setbacks. See Front Setback Exceptions, Section 15-2.15-3(D).
   
2. REAR SETBACK. The Rear Setback for a Triplex, or Multi-Unit Dwelling is fifteen feet (15'). See Rear Setback Exceptions, Section 15-2.15-3(F).
   
3. SIDE SETBACK. The minimum Side Setback for any Triplex, or Multi-Unit Dwelling is ten feet (10'). See Side Setback Exceptions, Section 15-2.15-3(H).
   
4. OPEN SPACE. The Applicant must provide Open Space equal to at least sixty percent (60%) of the total Site for all Triplex and Multi-Unit Dwellings. Parking is prohibited within the Open Space. This Transferred Development Right (TDR) Open Space must be Natural or Landscaped Open Space.

No Structure shall be erected to a height greater than twenty-eight feet (28') from Existing Grade. This is the Zone Height.

1. BUILDING HEIGHT EXCEPTIONS. The following height exceptions apply:
   
   1. Gable, hip, Barrel, and similar pitched roofs may extend up to five feet (5') above the Zone Height, if the roof pitch is 4/12 or greater.
      
   2. Antennas, chimneys, flues, vents, and similar Structures may extend up to five feet (5') above the highest point of the Building to comply with International Building Code (IBC) requirements.
      
   3. Water towers, mechanical equipment, and associated Screening, when enclosed or Screened, may extend up to five feet (5') above the height of the Building.
      
   4. Church spires, bell towers, and like architectural features, subject to the Architectural Guidelines, LMC Chapter 15-5, may extend up to fifty percent (50%) above the Zone Height, but may not contain Habitable Space above the Zone Height. Such exception requires approval by the Planning Director.
      
   5. Elevator Penthouses may extend up to eight feet (8') above the Zone Height.

Prior to the issuance of a Building Permit, for any Conditional or Allowed Use, the Community Development Department must review the proposed plans for compliance with Architectural Review, Chapter 15-5.

A Bed and Breakfast Inn is an Allowed Use, subject to an Administrative Permit. No permit may be issued unless the following criteria are met:

1. If the Use is in an Historic Structure, the Applicant will make every attempt to rehabilitate the Historic portion of the Structure to its original condition. 
   
2. The Structure has at least two (2) rentable rooms. The maximum number of rooms will be determined by the Applicant's ability to mitigate neighborhood impacts.
   
3. In an Historic Structure, the size and configuration of the rooms are Compatible with the Historic character of the Building and neighborhood.
   
4. The rooms are available for Nightly Rental only. 
   
5. An Owner/manager is living on-Site, or in Historic Structures there must be twenty-four (24) hour on-Site management and check-in. 
   
6. Food service is for the benefit of overnight guests only. 
   
7. No Kitchen is permitted within rental rooms. 
   
8. Parking on-Site is required at a rate of one (1) space per rentable room. The Planning Director may waive the parking requirement for Historic Structures if the Applicant proves that:
   
   1. no on-Site parking is possible without compromising the Historic Structure or Site, including removal of existing Significant Vegetation and all alternatives for proximate parking have been explored and exhausted; and
      
   2. the Structure is not economically feasible to restore or maintain without the adaptive Use.
      
9. The Use complies with Section 15-1-10, Conditional Use review.

Outdoor events and music require an administrative Conditional Use permit. The Use must also comply with Section 15-1-10, Conditional Use review. An Applicant must submit a Site plan and written description of the event, addressing the following:

1. Notification of adjacent Property Owners.
   
2. No violation of the City Noise Ordinance, Title 6.
   
3. Impacts on adjacent Residential Uses.
   
4. Proposed plans for music, lighting, Structures, electrical, signs, etc.
   
5. Parking demand and impacts on neighboring Properties.
   
6. Duration and hours of operation.
   
7. Impacts on emergency Access and circulation.

The Property Owner must protect Significant Vegetation during any Development activity. Significant Vegetation includes large trees six inches (6") in diameter or greater measured four and one-half feet (4.5') above the ground, groves of smaller trees, or clumps of oak and maple covering an Area fifty square feet (50 sq. ft.) or more measured at the drip line. 

Development plans must show all Significant Vegetation within twenty feet (20') of a proposed Development. The Property Owner must demonstrate the health and viability of all large trees through a certified arborist. The Planning Director shall determine the Limits of Disturbance and may require mitigation for loss of Significant Vegetation consistent with Landscape Criteria in Sections 15-3-3 and 15-5-5(N), and Title 14.

Signs are allowed in the RM District as provided in the Park City Sign Code, Title 12. 

• Fences and Walls. Section 15-4-2.
  
• Accessory Apartments. Section 15-4.
  
• Satellite Receiving Antenna. Section 15-4-13. 
  
• Telecommunication Facility. Section 15-4-14.
  
• Parking. Chapter 15-3.
  
• Landscaping. Title 14; Sections 15-3-3 and 15-5-5(N).
  
• Lighting. Sections 15-3-3 and 15-5-5(J).
  
• Historic Preservation. Chapters 15-11 and 15-13.
  
• Park City Sign Code. Title 12.
  
• Architectural Review. Chapter 15-5.
  
• Snow Storage. Section 15-3-3.
  
• Parking Ratio Requirements. Section 15-3-6.