Can you build an ADU in Dover, NY?

Rural District — Front yards and road frontage are measured from the CENTER LINE of the road, not the property line. The 40 ft recorded is the figure for a private or Town road; on a county or state road it is 60 ft. The front yard may also be adjusted to the prevailing setbacks of the immediate neighbourhood on any road. Minimum road frontage differs by road class: 100 ft on a private road, 250 ft on a Town road — the figure recorded — and 300 ft on a county or state road. Lots in conservation density subdivisions and rear lots may have shorter frontages (§§ 145-21, 145-22). Coverage is maximum IMPERMEABLE SURFACE at 10%, not building footprint (§ 145-73), and it applies both to each lot and to an entire subdivision including its new roads and public areas; in a flexible subdivision it applies to the subdivision as a whole only. Height is measured above average grade; for exceptions see § 145-30D. A nonresidential structure may not exceed 6,000 sq ft of footprint, excluding agricultural structures and anything legally completed or permitted before this chapter was adopted. A FLEXIBLE subdivision is the alternative to the conventional lot minimum recorded here, and its density, lot dimensions and setbacks come from §§ 145-19C and 145-19D rather than from the Dimensional Table.

Resource Conservation District — Front yards and road frontage are measured from the CENTER LINE of the road, not the property line. The 40 ft recorded is the figure for a private or Town road; on a county or state road it is 60 ft. The front yard may also be adjusted to the prevailing setbacks of the immediate neighbourhood on any road. Minimum road frontage differs by road class: 100 ft on a private road, 250 ft on a Town road — the figure recorded — and 400 ft on a county or state road. Lots in conservation density subdivisions and rear lots may have shorter frontages (§§ 145-21, 145-22). Coverage is maximum IMPERMEABLE SURFACE at 10%, not building footprint (§ 145-73), and it applies both to each lot and to an entire subdivision including its new roads and public areas; in a flexible subdivision it applies to the subdivision as a whole only. Height is measured above average grade; for exceptions see § 145-30D. A nonresidential structure may not exceed 4,000 sq ft of footprint, excluding agricultural structures and anything legally completed or permitted before this chapter was adopted. A FLEXIBLE subdivision is the alternative to the conventional lot minimum recorded here, and its density, lot dimensions and setbacks come from §§ 145-19C and 145-19D rather than from the Dimensional Table.

Hamlet Mixed-Use District — The Dimensional Table prints no lot area for this district; § 145-11D sets it by infrastructure, and the base row here is the unserviced case of one acre. Front yards and road frontage are measured from the CENTER LINE of the road, not the property line. The 25 ft recorded is the figure for a private or Town road; on a county or state road it is 30 ft. The front yard may also be adjusted to the prevailing setbacks of the immediate neighbourhood on any road. The side yard may be ZERO for a party-wall or zero-lot-line building. A maximum setback or "build-to line" may be established in the HM and HR Districts to maintain the street wall. Minimum road frontage differs by road class: 50 ft on a private road, 80 ft on a Town road — the figure recorded — and 100 ft on a county or state road. Lots in conservation density subdivisions and rear lots may have shorter frontages (§§ 145-21, 145-22). Coverage is maximum IMPERMEABLE SURFACE at 50%, not building footprint (§ 145-73), and it applies both to each lot and to an entire subdivision including its new roads and public areas; in a flexible subdivision it applies to the subdivision as a whole only. Height is measured above average grade; for exceptions see § 145-30D. A nonresidential structure may not exceed 10,000 sq ft of footprint, excluding agricultural structures and anything legally completed or permitted before this chapter was adopted. It may be enlarged to 50,000 sq ft for a supermarket or another use deemed essential to the economic viability of the hamlet.

Hamlet Residential District — The Dimensional Table prints no lot area for this district; § 145-11D sets it by infrastructure, and the base row here is the unserviced case of one acre. Front yards and road frontage are measured from the CENTER LINE of the road, not the property line. The 25 ft recorded is the figure for a private or Town road; on a county or state road it is 40 ft. The front yard may also be adjusted to the prevailing setbacks of the immediate neighbourhood on any road. The side yard may be ZERO for a party-wall or zero-lot-line building. A maximum setback or "build-to line" may be established in the HM and HR Districts to maintain the street wall. Minimum road frontage differs by road class: 50 ft on a private road, 70 ft on a Town road — the figure recorded — and 100 ft on a county or state road. Lots in conservation density subdivisions and rear lots may have shorter frontages (§§ 145-21, 145-22). Coverage is maximum IMPERMEABLE SURFACE at 30%, not building footprint (§ 145-73), and it applies both to each lot and to an entire subdivision including its new roads and public areas; in a flexible subdivision it applies to the subdivision as a whole only. Height is measured above average grade; for exceptions see § 145-30D. A nonresidential structure may not exceed 1,000 sq ft of footprint, excluding agricultural structures and anything legally completed or permitted before this chapter was adopted.

Suburban Residential — Front yards and road frontage are measured from the CENTER LINE of the road, not the property line. The 50 ft recorded is the figure for a private or Town road; on a county or state road it is 75 ft. The front yard may also be adjusted to the prevailing setbacks of the immediate neighbourhood on any road. Minimum road frontage differs by road class: 100 ft on a private road, 200 ft on a Town road — the figure recorded — and 200 ft on a county or state road. Lots in conservation density subdivisions and rear lots may have shorter frontages (§§ 145-21, 145-22). Coverage is maximum IMPERMEABLE SURFACE at 20%, not building footprint (§ 145-73), and it applies both to each lot and to an entire subdivision including its new roads and public areas; in a flexible subdivision it applies to the subdivision as a whole only. Height is measured above average grade; for exceptions see § 145-30D. The Dimensional Table sets no maximum footprint for a nonresidential structure here. A FLEXIBLE subdivision is the alternative to the conventional lot minimum recorded here, and its density, lot dimensions and setbacks come from §§ 145-19C and 145-19D rather than from the Dimensional Table.

Highway Commercial District — Front yards and road frontage are measured from the CENTER LINE of the road, not the property line. The 25 ft recorded is the figure for a private or Town road; on a county or state road it is 35 ft. The front yard may also be adjusted to the prevailing setbacks of the immediate neighbourhood on any road. The side yard may be ZERO for a party-wall or zero-lot-line building. Where the lot abuts a residential district the setback rises to 100 ft with a wooded buffer. Minimum road frontage differs by road class: none stated for a private road, 200 ft on a Town road — the figure recorded — and 300 ft on a county or state road. Lots in conservation density subdivisions and rear lots may have shorter frontages (§§ 145-21, 145-22). Coverage is maximum IMPERMEABLE SURFACE at 60%, not building footprint (§ 145-73), and it applies both to each lot and to an entire subdivision including its new roads and public areas; in a flexible subdivision it applies to the subdivision as a whole only. Height is measured above average grade; for exceptions see § 145-30D. A nonresidential structure may not exceed 40,000 sq ft of footprint, excluding agricultural structures and anything legally completed or permitted before this chapter was adopted.

Commercial/Industry/Office Mixed-Use District — Front yards and road frontage are measured from the CENTER LINE of the road, not the property line. The 50 ft recorded is the figure for a private or Town road; on a county or state road it is 150 ft. The front yard may also be adjusted to the prevailing setbacks of the immediate neighbourhood on any road. The side yard may be ZERO for a party-wall or zero-lot-line building. Where the lot abuts a residential district the setback rises to 100 ft with a wooded buffer. Minimum road frontage differs by road class: 100 ft on a private road, 200 ft on a Town road — the figure recorded — and 200 ft on a county or state road. Lots in conservation density subdivisions and rear lots may have shorter frontages (§§ 145-21, 145-22). Coverage is maximum IMPERMEABLE SURFACE at 40%, not building footprint (§ 145-73), and it applies both to each lot and to an entire subdivision including its new roads and public areas; in a flexible subdivision it applies to the subdivision as a whole only. Height is measured above average grade; for exceptions see § 145-30D. A nonresidential structure may not exceed 200,000 sq ft of footprint, excluding agricultural structures and anything legally completed or permitted before this chapter was adopted.

Industrial/Manufacturing District — Front yards and road frontage are measured from the CENTER LINE of the road, not the property line. The 100 ft recorded is the figure for a private or Town road; on a county or state road it is 200 ft. The front yard may also be adjusted to the prevailing setbacks of the immediate neighbourhood on any road. Where the lot abuts a residential district the setback rises to 100 ft with a wooded buffer. Minimum road frontage differs by road class: 100 ft on a private road, 200 ft on a Town road — the figure recorded — and 200 ft on a county or state road. Lots in conservation density subdivisions and rear lots may have shorter frontages (§§ 145-21, 145-22). Coverage is maximum IMPERMEABLE SURFACE at 30%, not building footprint (§ 145-73), and it applies both to each lot and to an entire subdivision including its new roads and public areas; in a flexible subdivision it applies to the subdivision as a whole only. Height is measured above average grade; for exceptions see § 145-30D. The Dimensional Table sets no maximum footprint for a nonresidential structure here.