What are the setbacks for structures, impervious surfaces, and facilities in the MRCCA?

Setbacks in the MRCCA are dependent on the Critical Area District. Maps are available showing the district boundaries and primary conservation areas including bluffs. 


Separated from River District
River Neighborhood District
Urban Mixed District
Height
Underlying Zoning
35 feet
65 feet
Setback from Bluff
40 feet
40 feet
40 feet
Setback from River
NA
100 feet
50 feet
Setback from Tributary
50 feet
50 feet
 NA


There are some exceptions to the setbacks listed above. Legally nonconforming principal structures that do not meet the setback requirements may be expanded laterally provided that: 

  • The expansion does not extend into the shore or bluff impact zone or further into the required setback than the building line of the existing principal structure.
  • The expanded structure’s scale and bulk is consistent with that of the original structure and existing surrounding development.

Decks and at-grade patios may encroach into the required setbacks from the ordinary high water level and blufflines without a variance, provided that:

  • The deck or patio does not extend into the bluff impact zone. 
  • The encroachment of the deck or patio into the required setback area does not exceed 15% of the required structure setback
  • The area of the deck or patio that extends into the required setback area occupies no more than 25% of the total area between the required setback and the 15% using the formula:

Required setback depth (feet) x 0.15 x lot width at setback (feet) x 0.25 = maximum total area.

A water-oriented accessory structure is a small building or other improvement, except stairways, fences, docks, and retaining walls, that, because of the relationship of its use to public waters, needs to be located closer to public waters than the normal structure setback. Examples include gazebos, screen houses and detached decks and patios. One water-oriented accessory structure is allowed for each riparian lot or parcel less than 300 feet in width at the ordinary high water level, with one additional water-oriented accessory structure allowed for each additional 300 feet of shoreline on the same lot or parcel. Water-oriented accessory structures must

  • Not exceed 12 feet in height;
  • Not exceed 120 square feet in area; 
  • Be placed a minimum of ten feet from the ordinary high water level
  • Not be placed within the bluff impact zone



Show All Answers

1. What are the setbacks for structures, impervious surfaces, and facilities in the MRCCA?
2. Is my property in the MRCCA?
3. Is my property in the MRCCA?
4. Is my property in the MRCCA?
5. Is my property in the MRCCA?
6. Does my project need a permit?
7. How do I apply for a Critical Area permit?
8. What are the setbacks for structures, impervious surfaces, and facilities in the MRCCA?
9. What are the standards for access paths and stairways to the river?
10. What are the standards for vegetation clearing in the MRCCA?
11. What are the standards for land alteration in the MRCCA?
12. What are the standards for lighting along the river?
13. What if my existing property does not meet the new rules?
14. What if my project is below the ordinary high water line of the river?