Town of Riverhead, New York Building Permit Guide

The Town of Riverhead Building Department at 4 West Second Street issues building, demolition, sign and electrical permits and certificates of occupancy for the whole town, which has no incorporated villages. Applications must reach the department as signed, notarized originals, and the town’s own Electrical Inspector permits and inspects wiring.

What requires a building permit in Riverhead?

Chapter 217 of the Town Code requires a building or demolition permit for any addition, renovation, demolition, alteration, roof deck replacement, new construction or change of occupancy. That permit is separate from any landmarks or zoning approval the same work needs. Electrical work needs its own permit from the town Electrical Inspector.

The shed and fence exemptions do not hold near a tidal or freshwater wetland, a bluff, or in the Pine Barrens Overlay District, where a permit and other approvals may be needed.

What the town decides and what the state holds

The Uniform Code sets the construction standards, and Part 1 of Chapter 217 is the town law that administers them. The Town Board writes Riverhead’s own rules alongside it: zoning in Chapter 301, the wetlands and coastal erosion chapters, the outdoor lighting (Dark Skies) code, the accessory dwelling unit law adopted on March 17, 2026, and the fee schedule. Construction standards stricter than the Uniform Code would need Code Council approval.

Riverhead building department: who handles permitting

The Building Department, led by the Community Development Planning and Building Administrator, enforces the state building code and the town zoning regulations, issues permits for new construction, additions, alterations and signs, inspects work in progress and issues certificates of occupancy for all 36,394 residents of the town. Riverhead contains no villages, so there is no second permit office to check.

Since March 2026 the Building Department also reviews, issues, renews, transfers and enforces accessory dwelling unit permits, a job the town’s former oversight board used to do. Wetlands applications go to the Planning Department, and the Planning Board administers the coastal erosion law.

Riverhead permit types and filing

Riverhead posts a separate application for each permit type, from residential and commercial building permits to use permits, bed-and-breakfast permits, agricultural worker housing, bulkheading, manufactured homes and amendments. The original, signed and notarized application must physically reach the department before a permit is issued, and processing starts only when every required form is in and the fee is paid.

Residential permits

The residential checklist calls for the two-page application and a General Municipal Law 809 disclosure affidavit, both notarized; an inspection acknowledgment checklist; the contractor’s liability (minimum $2 million / $1 million), workers’ compensation (C-105.2) and disability (DB-120.1) certificates naming the town as holder; an electrical application where needed; two complete plan sets plus a digital copy if possible; REScheck or equivalent (an insulation chart is enough for an addition under 500 square feet); and three plot plans or surveys, one carrying Health Department approval when required. Plans must carry a New York design professional’s seal, except for alterations costing $20,000 or less that do not affect structural or public safety, such as most finished basements.

An accessory dwelling unit must be in an owner-occupied house or legal accessory building; a new unit must be 400 to 1,000 square feet and no more than 40% of the main home’s living area, with a bedroom of at least 100 square feet, while older units of at least 300 square feet are treated as legally conforming. ADU permits run for five years, the owner must prove the house is his or her primary residence at approval and every renewal, transient rentals are banned, and the lot needs one extra paved off-street parking space, shown on the survey or site plan.

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Commercial permits

Commercial applications often need site plan approval, Fire Marshal review and Suffolk County Health Department approval before the permit. If a project looks viable, staff can place it on a Tuesday presubmission conference with the Planning Department. A land clearing permit is needed wherever site plan review applies, and a foundation-only permit requires a bond or cash deposit of 10% of the foundation’s cost. The town keeps that security and can remove the foundation if no certificate of occupancy is issued within a year, a period the inspector may extend twice by 30 days. Demolition permits need no plans unless the inspector asks for them, but shoring diagrams and proof of electric and gas disconnects may be required.

For tenant improvements and new commercial builds, Alliance handles commercial building permits through issuance. More on this: commercial building permits explained.

What comes before the building permit

Building within 150 feet of a freshwater wetland or watercourse, or within 300 feet of tidal water or a tidal wetland, needs a town wetlands permit: file the original and three copies with the Planning Department, and the Conservation Advisory Council reports within 60 days. Lots in those buffers must also meet the code’s grading rules, with the driveway apron at least 1½ feet below the finished floor. The Council starts its review within 30 days of referral, and the approving board may require a performance bond of up to 5% of the project cost. Work in the coastal erosion hazard area needs a coastal erosion management permit, and state DEC, highway, water and sewer approvals are attached where they apply.

Riverhead permit fees

Under section 217-12 the Town Board sets the building permit fee schedule by resolution, outside the code. The department’s inspectors estimate the cost of a project from its lineal or square footage, checked against the cost the applicant enters. The resolution itself is not posted; the department’s FAQ says only that “for large projects, permit fees approach 1.2% of the estimated cost of construction.” Several fees are still fixed in Chapter 217, and the electrical schedule is posted:

All Chapter 217 fees are non-refundable. The code waives building permit fees for work that improves access for people with disabilities, and waives building, plumbing and electrical fees for homes replacing cesspools under Suffolk County’s Septic Improvement Program. A missed inspection is treated as a failed one and is charged the duplicate fee.

Trade permits and who may pull them

Electrical. Riverhead employs its own Electrical Inspector, who reviews electrical permit applications, inspects the trench, rough wiring and final, and issues the certificate of compliance needed for a certificate of occupancy. Applications list the electrician and license number, and the forms page adds an electric device count sheet and an electrical affidavit. Homeowners may make ordinary electrical repairs on their own residential property. Applications for two or more meters on a single-family property are denied unless the layout of the buildings requires them and the owner signs a single-family affidavit.

Plumbing and contractors. The building application names the plumber, electrician and contractor with license numbers, and a plumber’s affidavit is filed before the certificate of occupancy. Riverhead’s code has no trade licensing chapter of its own, so Suffolk County’s Department of Labor, Licensing and Consumer Affairs licenses home improvement contractors and master electricians and plumbers working in the town. Work on an existing manufactured home must be done by an installer or mechanic certified by the New York Department of State.

Septic. New houses, added bedrooms and sanitary upgrades go through the Suffolk County Department of Health Services Office of Wastewater Management (631-852-5700) before the town permit, and the county approval is part of the certificate of occupancy file. Where the county requires an upgraded or innovative septic design, the owner must install it. One of the three surveys filed with the building application must carry that county approval and show the existing and proposed sanitary system.

How to apply for a Riverhead building permit

Review, corrections and what causes delay

The department says missing documents cause significant delays, especially when another agency’s approval is needed; pool permits, by contrast, usually issue in under two weeks and solar fast-track applications get a 14-day review. Under the 2025 amendment, an ordinary demolition must begin within 45 days of issue and finish within one year, and a demolition ordered to cure a violation within six months. Nonconforming lots need a single and separate title search, and recorded covenants must be supplied where they exist.

Riverhead inspections and certificates

Request inspections by email to buildinginspections@townofriverheadny.gov, giving one week’s notice. The first inspection must happen within four months of the permit, and the sequence is footing reinforcement, footing keyway and wall reinforcement, foundation before backfill, under-slab plumbing and insulation, framing and sheathing before housewrap, rough plumbing (with an air or water test if required), rough electric, insulation and draft stopping, and the final building, plumbing and electrical inspections. In a flood zone, a flood elevation certificate is due after the foundation is poured and before framing starts. If rebar is covered before it is seen, the town may require third-party imaging. Land-clearing and construction debris must leave the site; it may not be buried or used to backfill footings and foundations, and the owner and contractor answer for drainage and flooding problems on the lot.

The certificate of occupancy file needs a final survey and final flood elevation certificate where they apply, the Electrical Inspector’s certificate of compliance, Suffolk County Health approval, the plumber’s and final floor affidavits and a Dark Skies acknowledgment. Allow at least 72 hours after the last document arrives. Additions and alterations may not be used for more than 30 days after completion without the certificate.

New York building code

New York builds on one statewide code, the Uniform Code, outside New York City; the 2025 edition and 2025 Energy Code took effect on 31 December 2025 (the all-electric provisions remain suspended by court order). Cities, towns and villages administer it, and local standards stricter than the code need Code Council approval. The Uniform Code in New York

Town of Riverhead permit FAQ

Do I need a permit for an above-ground pool in Riverhead?

Yes, even for a storable pool, unless it is designed for water less than 24 inches deep and sits entirely above ground. Pool permits usually issue in under two weeks.

Do I need a permit for a shed?

One shed under 144 square feet at a single-family house is exempt if it is in the rear yard and at least 5 feet from the lines, and not near wetlands, a bluff or in the Pine Barrens Overlay.

Does reroofing need a permit?

No. Reroofing, roof re-cover and replacement siding are exempt; replacing the roof deck is not.

Who inspects electrical work?

The Town of Riverhead Electrical Inspector, who also issues the certificate of compliance. Electrical permits start at $75 for ten devices or fewer.

How much is a building permit?

It is based on the estimated cost of construction under the Town Board’s fee resolution, which is not posted online; the department’s FAQ says that “for large projects, permit fees approach 1.2% of the estimated cost of construction.”

Can I add an accessory apartment?

If you live in the house, yes, with an ADU permit from the Building Department under the March 2026 law; new units must be 400 to 1,000 square feet.

How do I get copies of old permits or a certificate of occupancy?

File a Freedom of Information request with the Town Clerk, online or on paper.

Is Riverhead in FEMA’s flood insurance program?

Yes. FEMA’s Community Status Book lists the Town of Riverhead as participating, with a current flood map dated September 25, 2009.

Riverhead permit search and official resources

Copies of permits, certificates of occupancy and surveys are released only through the Freedom of Information Law: the Town Clerk receives the request, online or on paper, and routes it to the Building Department.

• Town of Riverhead Building Department
• Building Department forms
• Building Department FAQs
• Residential building permit application
• Electrical fee schedule
• Inspection and certificate of occupancy information sheet
• Riverhead online FOIL requests
• Code of the Town of Riverhead (eCode360)
• Suffolk County residential sanitary permits
• Suffolk County Consumer Affairs licensing
• NYS Uniform Code adoption notice

Simplify Town of Riverhead permitting with Alliance Permitting

Alliance Permitting is a permit documentation and submission company in New York. We prepare your paperwork, file it correctly and coordinate with the permitting authority through issuance. We are not a contractor and we do not perform licensed plan review or inspections; that work stays with your licensed team and the jurisdiction.

This guide is provided by Alliance Permitting for general information about Town of Riverhead permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.