Permitting Authorities / City of Watertown, South Dakota - Building Inspection / Licenses & Permits
Do you need a permit to replace a roof in Watertown, SD?
Adopted code
City of Watertown, South Dakota - Building Inspection / Licenses & Permits
Yes, a permit is required to replace a roof in Watertown, SD, issued by City of Watertown, South Dakota - Building Inspection / Licenses & Permits. Resolved 2026-08-10 by the decision rule set when the ordinance and the city's operations disagreed: the city's own permitting portal record for the "Reroofing Permit" states its scope as "either Residential or Commercial reroofing projects" with mandatory submittals (the Roofing Fillable Standard Plate) and photos throughout the installation for required inspections; it is not limited to decking or structural repairs. The ordinance-book exemption (Ord 18-27, Rev 12-28-18, amended IRC R105.2) for "[r]eplacement of siding, gutters, downspouts, storm windows, storm doors, or similar type roofing materials" is therefore read as covering those component replacements, not full reroofs. See repair_permit_threshold for the full exemption text and history.
Roof code checklist: Watertown, SD
Each row comes from the sourced record on this page; full wording is in the table below. "Not published" means no official source for that item was found when the record was last verified.
Jurisdiction
City of Watertown, South Dakota
Address
20 N. Maple Street, Watertown, SD 57201
Contact
- url: https://www.watertownsd.us/197/Licenses-Permits
- phone: (605) 882-6200
Roofing permit required
Required
Contractor registration required
Required
Registration details
- license: CITY-LEVEL CREDENTIAL REQUIRED. Watertown's own Code of Ordinances, Title 12, Chapter 12.06 ("Residential Contractors License"), makes it unlawful to "conduct, carry on or engage in the business of residential contracting work or act in the capacity of a residential contractor" without a City-issued residential contractor's license, and expressly lists "all building trade contracting including roofing, remodeling, siding, rough framing" among the covered activities (Sec. 12.0602). Exemptions: employees/bona fide subcontractors of a licensed contractor; persons licensed for a different trade doing work commensurate with that license; and a homeowner working on their own owner-occupied residence (capped at one self-built single-family dwelling per three years without a license). Licensed contractors must carry a minimum $500,000 general-liability policy, provide proof of workers' compensation insurance, and supply their South Dakota contractor's excise tax number on the license application (Sec. 12.0603). Licenses expire December 31 each year. STATE LEVEL: South Dakota's Department of Labor and Regulation licenses no general or roofing contractor board (its boards are Abstracters, Athletic Commission, Accountancy, Barber Examiners, Technical Professions, Cosmetology, Electrical, Plumbing, and Real Estate) - the state-level gap is what Watertown's own municipal license fills. The only state-level registration applicable to a roofer is the Contractor's Excise Tax Licence from the SD Department of Revenue under SDCL ch. 10-46A, a tax filing requirement rather than a trade credential.
Permit process note
Resolved 2026-08-10 by the decision rule set when the ordinance and the city's operations disagreed: the city's own permitting portal record for the "Reroofing Permit" states its scope as "either Residential or Commercial reroofing projects" with mandatory submittals (the Roofing Fillable Standard Plate) and photos throughout the installation for required inspections; it is not limited to decking or structural repairs. The ordinance-book exemption (Ord 18-27, Rev 12-28-18, amended IRC R105.2) for "[r]eplacement of siding, gutters, downspouts, storm windows, storm doors, or similar type roofing materials" is therefore read as covering those component replacements, not full reroofs. See repair_permit_threshold for the full exemption text and history.
Adopted code
2018 International Residential Code, Chapters 1-23 and 43, and Appendices H and J, adopted with local amendments at Title 5, Chapter 5.03, Sec. 5.0301(2) of the city's Revised Ordinances (Ord 18-27, most recently revised 12-28-18). The same ordinance separately adopts the 2018 International Building Code (Chapters 1-26, 30-35, Appendices C and I) at Sec. 5.0301(3). South Dakota has no mandatory statewide residential building code - SDCL ch. 11-10 sets up a local-option framework - so the 2018 IRC is Watertown's own choice of edition, not an inherited state mandate.
Drip edge
Required — The city adopts the 2018 IRC (Ord 18-27, Title 5, Chapter 5.03). Its lettered amendment list (items a. through zz., read in full) does not touch drip edge (IRC Sec. R905.2.8.5), so the base 2018 IRC drip-edge requirement applies unmodified.
About drip edgeIce & water shield
Required — Table R301.2(1), as filled in by the city's amendment (Ord 18-27, Rev 12-28-18), states "Ice Shield Underlayment Required - Yes." The city separately amends IRC Sec. R905.1.2 (Ice Barrier), extending the required membrane from the base-code 24 inches to 36 inches inside the exterior wall line: "Section R905.1.2 Ice Barrier. Amend '24 inches (610 mm) inside the exterior wall line of the building' to '36 inches'."
About ice & water barrierMid-roof inspection
Not required — I read Title 5, Chapter 5.03 of the city's Code of Ordinances in full (the 2018 IRC/IBC adoption chapter and its full lettered amendment list, items a. through zz.) and searched the full 584-page Ordinance Book for staged-inspection terms. The only inspection provision touching Sec. R109 adds general applicant-responsibility language ("All construction or work for which a permit is required shall be subject to inspection by the Building Official... the permit applicant to cause the work to remain accessible and exposed for inspection purposes"); no mid-roof, dry-in, sheathing, or other staged inspection distinct from a final inspection is named anywhere in the document for roofing work.
Impact-resistant roofing
Not required — I read Title 5, Chapter 5.03 of the city's Code of Ordinances in full (the 2018 IRC/IBC adoption chapter and its full lettered amendment list, items a. through zz., which is the only place the city modifies IRC Chapter 9 roofing provisions) and searched the full 584-page Ordinance Book text for "UL 2218" and "Class 4" - neither term appears anywhere in the document. No impact-resistant or Class 4 shingle mandate appears in the city's adopted code or its amendments.
Repair permit threshold
Watertown sets no dollar-value threshold; its permit exemption is scoped by the TYPE of work, not job cost. The city's own amendment to IRC Sec. R105.2 (Ord 18-27, Rev 12-28-18) exempts "[r]eplacement of siding, gutters, downspouts, storm windows, storm doors, or similar type roofing materials" from the permit requirement regardless of value. Pulling the other way, the city's own Licenses & Permits page and its OpenGov citizen portal both list a "Reroofing Permit" as a distinct permit type, which is not how a city usually treats work it has exempted. Both of these are true of Watertown today and they point in opposite directions. The portal record's own scope language resolves the conflict: opened 2026-08-10, the Reroofing Permit record type states "Use this permit for either Residential or Commercial reroofing projects," with required submittals (the Roofing Fillable Standard Plate) and photos throughout the installation for required inspections. The permit is not limited to decking or structural work, so the ordinance's type-of-work exemption is read as covering siding, gutters, downspouts and similar components rather than full reroofs.
Wind design criteria
Table R301.2(1) (Climatic and geographic design criteria) as filled in by the city's amendment (Ord 18-27, Rev 12-28-18): Ground Snow Load 50 psf; Wind speed 90 mph; Seismic Design Category A; Weathering Severe; Frost line depth 48" to bottom of footing; Termite Slight to moderate; Decay None to slight; Ice Shield Underlayment Required - Yes; Air Freezing Index 3033; Mean Annual Temperature 42.1 F.
Roof layer limit / recover
The city adopts the 2018 IRC (Ord 18-27, Title 5, Chapter 5.03). Its lettered amendment list (items a. through zz., read in full) does not touch roof recovering/replacement layer limits (IRC Chapter 9, Sec. R907), so the base 2018 IRC provisions on roof layers apply unmodified. No Watertown-specific layer-count figure is published in the city's own Code of Ordinances. Base-code rule, read at 2018 IRC Section R908.3.1.1 (Roof recover not allowed) and quoted here rather than left behind the ICC paywall: a roof recover "shall not be permitted" where "the existing roof has two or more applications of any type of roof covering" (nor where the existing covering is water soaked or deteriorated, or is slate, clay, cement or asbestos-cement tile). One existing layer may therefore be recovered; a second existing layer forces tear-off to the deck.
Deck & sheathing requirements
The city adopts the 2018 IRC (Ord 18-27, Title 5, Chapter 5.03). Its lettered amendment list (items a. through zz., read in full) does not touch deck sheathing requirements, so the base 2018 IRC sheathing provisions apply unmodified. No Watertown-specific sheathing thickness or material figure is published in the city's own Code of Ordinances.
Sales & use tax
South Dakota taxes roofing work as a realty improvement under the contractors' excise tax rather than as a retail sale, so the rate that governs a Watertown roofing contract is the state contractors' excise tax: SDCL ch. 10-46A imposes a 2% excise tax on the gross receipts of prime contractors and subcontractors performing construction services and realty-improvement projects, and every contractor must hold a Contractor's Excise Tax Licence from the South Dakota Department of Revenue. This excise-tax regime is statewide and applies in Watertown identically to everywhere else in South Dakota; Watertown's own Chapter 12.06 residential-contractor-license application separately requires applicants to supply their excise tax number, cross-referencing the two regimes locally.
Local roofing hub
More roof permit pages in South Dakota
Related guides
The City of Watertown's Licenses & Permits function lists building permits, including a "Reroofing Permit" as its own distinct permit type, separate from the general Residential Alteration Building Permit and from a Contractor License (Commercial & Residential) category. South Dakota does not impose a single mandatory statewide residential building code; SDCL ch. 11-10 sets up a local-option framework under which a municipality that chooses to adopt a construction code does so on its own. Permit applications and licensing are administered through the city's OpenGov citizen portal.
Hail reports near Watertown, SD
- Reports, last 24 months
- 8
- Largest, last 24 months
- 2.75 in Jul 27, 2025
- Most recent
- Jul 6, 2026 1.00 in
- Reports, last 5 years
- 26
Source: NOAA Storm Prediction Center severe weather database and daily storm reports (reports since the start of the current year are preliminary), within 10 miles of Watertown, SD (Census point). Data through Sep 23, 2026. A report is an observation, not a damage record.
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Roofing questions: Watertown, SD
Do you need a permit to replace a roof in Watertown, SD?
Yes, a permit is required to replace a roof in Watertown, SD. Watertown sets no dollar-value threshold; its permit exemption is scoped by the TYPE of work, not job cost. The city's own amendment to IRC Sec. R105.2 (Ord 18-27, Rev 12-28-18) exempts "[r]eplacement of siding, gutters, downspouts, storm windows, storm doors, or similar type roofing materials" from the permit requirement regardless of value. Pulling the other way, the city's own Licenses & Permits page and its OpenGov citizen portal both list a "Reroofing Permit" as a distinct permit type, which is not how a city usually treats work it has exempted. Both of these are true of Watertown today and they point in opposite directions. The portal record's own scope language resolves the conflict: opened 2026-08-10, the Reroofing Permit record type states "Use this permit for either Residential or Commercial reroofing projects," with required submittals (the Roofing Fillable Standard Plate) and photos throughout the installation for required inspections. The permit is not limited to decking or structural work, so the ordinance's type-of-work exemption is read as covering siding, gutters, downspouts and similar components rather than full reroofs.
Is ice & water shield required in Watertown, SD?
Yes. Table R301.2(1), as filled in by the city's amendment (Ord 18-27, Rev 12-28-18), states "Ice Shield Underlayment Required - Yes." The city separately amends IRC Sec. R905.1.2 (Ice Barrier), extending the required membrane from the base-code 24 inches to 36 inches inside the exterior wall line: "Section R905.1.2 Ice Barrier. Amend '24 inches (610 mm) inside the exterior wall line of the building' to '36 inches'."
Is drip edge required in Watertown, SD?
Yes. The city adopts the 2018 IRC (Ord 18-27, Title 5, Chapter 5.03). Its lettered amendment list (items a. through zz., read in full) does not touch drip edge (IRC Sec. R905.2.8.5), so the base 2018 IRC drip-edge requirement applies unmodified.
Can you roof over an existing roof in Watertown, SD?
The city adopts the 2018 IRC (Ord 18-27, Title 5, Chapter 5.03). Its lettered amendment list (items a. through zz., read in full) does not touch roof recovering/replacement layer limits (IRC Chapter 9, Sec. R907), so the base 2018 IRC provisions on roof layers apply unmodified. No Watertown-specific layer-count figure is published in the city's own Code of Ordinances. Base-code rule, read at 2018 IRC Section R908.3.1.1 (Roof recover not allowed) and quoted here rather than left behind the ICC paywall: a roof recover "shall not be permitted" where "the existing roof has two or more applications of any type of roof covering" (nor where the existing covering is water soaked or deteriorated, or is slate, clay, cement or asbestos-cement tile). One existing layer may therefore be recovered; a second existing layer forces tear-off to the deck.
Do roofing contractors need a license or registration in Watertown, SD?
Yes. CITY-LEVEL CREDENTIAL REQUIRED. Watertown's own Code of Ordinances, Title 12, Chapter 12.06 ("Residential Contractors License"), makes it unlawful to "conduct, carry on or engage in the business of residential contracting work or act in the capacity of a residential contractor" without a City-issued residential contractor's license, and expressly lists "all building trade contracting including roofing, remodeling, siding, rough framing" among the covered activities (Sec. 12.0602). Exemptions: employees/bona fide subcontractors of a licensed contractor; persons licensed for a different trade doing work commensurate with that license; and a homeowner working on their own owner-occupied residence (capped at one self-built single-family dwelling per three years without a license). Licensed contractors must carry a minimum $500,000 general-liability policy, provide proof of workers' compensation insurance, and supply their South Dakota contractor's excise tax number on the license application (Sec. 12.0603). Licenses expire December 31 each year. STATE LEVEL: South Dakota's Department of Labor and Regulation licenses no general or roofing contractor board (its boards are Abstracters, Athletic Commission, Accountancy, Barber Examiners, Technical Professions, Cosmetology, Electrical, Plumbing, and Real Estate) - the state-level gap is what Watertown's own municipal license fills. The only state-level registration applicable to a roofer is the Contractor's Excise Tax Licence from the SD Department of Revenue under SDCL ch. 10-46A, a tax filing requirement rather than a trade credential.
What building code does Watertown, SD use?
2018 International Residential Code, Chapters 1-23 and 43, and Appendices H and J, adopted with local amendments at Title 5, Chapter 5.03, Sec. 5.0301(2) of the city's Revised Ordinances (Ord 18-27, most recently revised 12-28-18). The same ordinance separately adopts the 2018 International Building Code (Chapters 1-26, 30-35, Appendices C and I) at Sec. 5.0301(3). South Dakota has no mandatory statewide residential building code - SDCL ch. 11-10 sets up a local-option framework - so the 2018 IRC is Watertown's own choice of edition, not an inherited state mandate.