The Town of Greenwich's Building Inspection Division, part of the Department of Public Works on the second floor of Town Hall at 101 Field Point Road, enforces the Connecticut State Building Code for a coastal town of around 65,000 people at the south-western corner of the state, with the state line at its back. The public counter is open from eight in the morning to one in the afternoon, and the division's process starts before the application does: a group number and sign-off sheet are obtained in person, the sheet shows which town departments must approve the project, and the applicant collects those approvals — zoning, sewer, health and whichever others are ticked — before the building permit is filed with two sets of plans.
Zoning is the first tick on every sheet. Every zoning permit and some trade permits are reviewed for compliance with the Building Zone Regulations before the division will accept the application, the Zoning Enforcement Office sits inside the division for that reason, and both the zoning enforcement officer and the building official must sign every certificate of occupancy before it takes effect. Re-roofing, re-siding and replacement windows on one- and two-family houses can be filed by email; the rest are filed in person, and inspections are scheduled through the City Squared system once a permit exists.
This guide covers the Town of Greenwich, including its villages of Old Greenwich, Riverside, Cos Cob and Byram. Stamford is a separate city, the state line lies to the west and south-west, and no county building department exists anywhere in Connecticut.
Get the group number before anything else. Nothing is filed in Greenwich until the Building Inspection Division has issued a group number and a sign-off sheet, and the sheet is the route map: each ticked department must approve by signature or by email before the application is accepted. Zoning review comes first, and the zoning enforcement officer co-signs the certificate of occupancy at the end.
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Get a free quote →What requires a building permit in Greenwich?
Connecticut has one building code and no town may amend it. The State Building Inspector and the Codes and Standards Committee adopt the Connecticut State Building Code jointly under section 29-252 of the General Statutes, with the approval of the Commissioner of Administrative Services, and section 29-253 makes it the building code of every town, city and borough in the state. The edition in force is the 2022 Connecticut State Building Code, which has governed every permit applied for since the first of October 2022 and is built on the 2021 international building, residential, existing building, mechanical, plumbing, energy and swimming pool codes with Connecticut amendments, together with the 2020 National Electrical Code. A 2026 edition built on the 2024 model codes was drafted to take effect in July 2026, but the legislature's Regulation Review Committee declined to approve it that April and its effective date is delayed; the 2022 code governs until a new one is approved, and when the change comes it will turn on the date of the permit application. So Greenwich neither adopts nor amends the code — it enforces it through a building official licensed by the state — and the practical questions are the local process, the zoning and wetlands approvals that come before a building permit, and the group number and sign-off sheet the town requires before it will take a filing.
Typically permit required
- Interior renovations that alter walls, windows, load-bearing elements or any trade system, under the town's own guidance
- A group number and completed sign-off sheet before any building permit application is accepted
- Zoning review under the Building Zone Regulations before the division will take the file
- New buildings, additions and any structural work, under section 29-263 of the General Statutes
- Alterations, renovations and repairs beyond the code's ordinary-repair exemption, and any change of use or occupancy
- Decks, sheds and accessory structures above the code's exemption sizes, retaining walls and swimming pools
Often exempt
- Painting, tiling, cabinetry without moving utilities and certain minor repairs, on the town's work-exempt list
- Ordinary repairs that do not alter structure, egress, fire protection or building systems
- Ordinary repairs that do not alter structure, egress, fire protection or building systems
- One-storey detached accessory structures, fences and retaining walls below the code's stated exemption sizes
- Painting, papering, tiling, carpeting, cabinets, worktops and similar finish work
What the town decides and what the state holds
Locally, what stands out is the group number and sign-off sheet that precede every filing, the zoning review that comes first, the shoreline and the coastal review, and the state line that ends the town's jurisdiction.
Connecticut has one State Building Code: the code itself sets which work needs a permit and which is exempt, every town’s building official is licensed by the State Building Inspector, and there is no county government. Connecticut rules
Not sure this scope needs a permit?
Get a free quote →Who handles permitting in Greenwich?
The Building Inspection Division of the Department of Public Works is the permitting authority inside the town, enforcing the Connecticut State Building Code through a state-licensed building official and issuing building and trade permits. The Zoning Enforcement Office inside the division reviews zoning compliance first and co-signs certificates of occupancy, the sewer, health, conservation and coastal reviews sign the sheet where ticked, the fire marshal reviews plans alongside the building official, and the Department of Consumer Protection registers and licenses contractors statewide.
| Detail | Information |
|---|---|
| Department | Greenwich Building Inspection Division, Department of Public Works |
| Office | Town Hall, 101 Field Point Road, 2nd floor, Greenwich, CT 06830 |
| Phone | (203) 992-8910 |
| Process | Group number and sign-off sheet first; two plan sets in person, limited types by email |
| Counter hours | Monday to Friday, 8:00 am to 1:00 pm; by appointment 1:00 to 3:30 pm |
| Inspections | Scheduled through City Squared against the permit number |
Permit types
Residential permits
A Greenwich house project begins at the second-floor counter with the group number, carries the sign-off sheet to zoning, sewer or septic and health, and files two sets of plans once every ticked box is signed or confirmed by email; the trades follow on their own permits. A re-roof, re-siding or window replacement on a one- or two-family house can be filed by email instead. The Building Zone Regulations govern setbacks, coverage and floor area closely, and on the shore, the Mianus and Byram river valleys and the back-country wetlands the conservation and coastal reviews are ticks on the sheet too.
Commercial permits
Commercial work in Greenwich — the Greenwich Avenue and railway-station districts, the office campuses along the parkway and the hospital — files with sealed drawings after the same sign-off sequence, the fire marshal's review and, where the Planning and Zoning Commission's approval is required, the commission's decision in hand. The town's height limits keep most buildings below the threshold limits, but the review and the major contractor registration apply where they are crossed.
What comes before the building permit
In Greenwich the Sound shoreline and the tidal river mouths bring coastal site plan review and flood-zone elevation rules, the back-country wetlands and watercourses bring the conservation review, and the state line to the west and south-west ends the town's jurisdiction where the road signs change.
Rather talk it over?
Call 1-855-478-4290 →Connecticut has no general contractor licence: the Department of Consumer Protection registers home improvement and new home construction contractors and licenses the trades. Connecticut rules
Greenwich permit costs and fees
Greenwich charges building permit fees on the valuation of the work under its published fee schedule, and that valuation includes the mechanical trades: trade permits covered by a building permit must still be obtained but carry no separate fee. The zoning permit and the other sign-offs on the sheet carry their own fees.
| Item | Fee or rule |
|---|---|
| Building permit | $13.26 per $1,000 of valuation (residential) or $15.26 (commercial), minimum $40.26; valuation includes the trade work |
| State education fee | 26 cents per $1,000 of declared value, remitted to the state |
| Zoning permit | Separate fee, reviewed before the building permit is accepted |
| Trade permits | No fee when covered by a building permit; a stand-alone electrical, plumbing or heating and cooling permit is $12 per $1,000, minimum $40 |
| Sewer, health and conservation | Their own fees where ticked on the sign-off sheet |
| Records | Surveys, permit reports, plans and certificate copies by email request and appointment |
The counter closes at one. Greenwich’s public counter runs from eight to one, with appointments from one to half past three. Group numbers are issued and most applications are filed in person, so a file that arrives at two in the afternoon without an appointment waits for the next morning. Building the counter’s hours into the filing plan is not optional.
Rather not deal with the building department?
Get a free quote →Trade permits and who may pull them
Permit required
- Any trade permit that needs a zoning sign-off — reviewed for zoning compliance before the division accepts it
- Electrical — permit required (a separate trade permit in many towns), by a licensed electrical contractor of the right class
- Plumbing and piping — permit required (a separate trade permit in many towns), by a licensed plumbing and piping contractor
- Heating, cooling and sheet metal — permit required under the mechanical code (a separate trade permit in many towns), by the licensed contractor for that class
- Fire sprinklers and fire alarms — permit required; sprinkler work by a licensed fire protection sprinkler contractor, alarm wiring by a licensed electrician; the local fire marshal reviews the plans where the Fire Safety Code applies
Typically exempt
- Stopping leaks, clearing blockages, minor part replacements and portable appliances, as listed in the code's plumbing, gas and mechanical exemptions
- Minor low-voltage and portable equipment work within the code's electrical exemptions
Trade work needs a permit in every town, often a separate trade permit, and must be done by a tradesperson holding the Department of Consumer Protection licence for that trade. Connecticut rules
How to apply for a Greenwich building permit
No building permit can be issued until the zoning enforcement officer certifies the work complies. Wetlands permits come from the town's inland wetlands agency, coastal site plan review runs through zoning, and septic approval comes from the local health department.
The 2022 Connecticut State Building Code governs until the delayed 2026 edition takes effect; the application date fixes which one applies.
Home improvement or new home construction registration from the Department of Consumer Protection, and the occupational licence for each trade.
Section 29-263 requires the application to come from the owner or the owner's authorised agent; the building official reviews the plans, the fire marshal also reviews them where the Fire Safety Code applies, and the state education fee is charged on the declared construction value.
The building official must issue or refuse the permit within 30 days of the application; if the plans do not comply, the refusal must be in writing with reasons. Projects above the threshold limits also need an independent structural review.
Footing to final, trade inspections as the town requires, then the certificate of occupancy under section 29-265.
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Get a free quote →Review, corrections and what actually causes delay
The Building Inspection Division reviews for the State Building Code with the fire marshal alongside, but only once the sign-off sheet is complete; zoning review comes before that. What delays a Greenwich project is an application presented without a group number, a sheet with a department unsigned, a set filed by email that the division only takes in person, and an arrival after one o’clock without an appointment.
Inspections in Greenwich
Inspections follow the code's sequence in every town — footing, foundation, framing, rough electrical, plumbing and mechanical, insulation and final — requested from the building official by permit number, with the trades inspected on their own permits. Work that passes final receives a certificate of occupancy under section 29-265, without which a new or altered building may not be occupied; on a project above the threshold limits the architect and engineer of record and the general contractor also sign a statement of professional opinion that the finished work substantially matches the approved plans. Greenwich inspections are scheduled through City Squared against the permit number, with building, electrical, plumbing and heating and cooling inspectors at each critical stage; the certificate of occupancy takes effect only once both the building official and the zoning enforcement officer have signed it.
Inspections are where schedules slip.
Get a free quote →Greenwich permit search and official resources
- Greenwich Building Inspection Division — permits, forms, the fee schedule and the inspection process
- Greenwich permit application process — the group number, the sign-off sheet and the other town agencies involved
- Greenwich Zoning Enforcement — zoning review before the permit and the joint sign-off on certificates of occupancy
- Office of the State Building Inspector — the Connecticut State Building Code, the delayed 2026 edition and code modifications
- Connecticut Department of Consumer Protection — home improvement and new home construction registration, trade licences and the eLicense lookup
- General Statutes chapter 541 — the statutes on the State Building Code, permits, certificates of occupancy and threshold limits
Frequently asked questions
What is a group number?
The number the Building Inspection Division issues in person at the start of an application. It organises the file and tracks the departmental sign-offs the sheet requires.
Does zoning review come before the building permit?
Yes. Every zoning permit and some trade permits are reviewed for compliance with the Building Zone Regulations before the division will accept the application.
Who signs the certificate of occupancy?
Both the building official and the zoning enforcement officer. A certificate is not effective until both have signed.
Which code applies?
The 2022 Connecticut State Building Code, uniform statewide. The 2026 edition is delayed and does not yet apply.
Can I file by email?
Only for a limited set of application types. The rest are filed in person with two sets of plans, and the counter is open from eight to one.
Is there a county building department?
No. Connecticut abolished county government in 1960. The town is the only permitting authority inside its limits, and the state line ends it to the west.
Simplify Greenwich permitting with Alliance Permitting
Greenwich's sign-off sheet rewards a file that arrives already signed. We pull the group number, walk the sheet through zoning, sewer and health, and file two complete sets before the counter closes at one.
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Send us the scope and the parcel. We confirm the review path with the Greenwich Building Inspection Division, assemble the submittal, file it, and track it through issuance — corrections included.
More Connecticut permitting guides
More Connecticut permitting guides
This guide is provided by Alliance Permitting for general information about Greenwich permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.