Custom home builder in Wilmington, North Carolina.

Here's what Wilmington decides for your lot.

We build new homes and remodel existing ones in Wilmington, from our home base in Southport.

• In a historic district, any outside change the street can see needs the city's OK first.
• A historic approval lapses if work has not started within 12 months.
• In listed districts, a house lot can have one ADU, with conditions, no bigger than half the house or 1,200 square feet.

At a glance

Zoning code

The city's own Land Development Code (Chapter 18), inside the city limits

Building permit

Issued by New Hanover County Building Safety, after the city's review

Design wind speed

140 mph west of Hwy. 17, 150 mph east of it (2018 NC Residential Code)

Flood freeboard

The lowest floor sits at least 2 ft above base flood elevation, where one is mapped

Drive from Southport

About 28 miles and 40 minutes to downtown, on NC 133 and the Cape Fear Memorial Bridge

Residential Contractor License #109520 · Member, Brunswick County Home Builders Association

Exterior changes in a Wilmington historic district need approval first.

Jurisdiction

City of Wilmington, New Hanover County: the city Land Development Code governs everything inside the limits, and the county UDO governs the unincorporated county.

Adopted code

City of Wilmington Land Development Code (Chapter 18), adopted August 17, 2021 and in effect since December 1, 2021.

Permit authority

Zoning, site plan and Certificate of Appropriateness review by the city; building and trade permits for every lot in the city issued by New Hanover County, per the city's own permit guidance (LDC Sec. 18-600 sets which work needs a permit).

Historic review

Certificate of Appropriateness from the city's Historic Preservation Commission before exterior work in a locally designated historic district (LDC Sec. 18-597); in a historic district overlay, for work visible from a public right-of-way, with an alley view alone exempt (Sec. 18-101).

Flood-map source

FEMA Flood Insurance Rate Maps and the NC Flood Risk Information System, adopted into LDC Article 4, Division 2, Floodplain Management.

Freeboard

Lowest floor at least 2 ft above base flood elevation where one is mapped (LDC Sec. 18-270(B)(2))

Ultimate design wind speed

140 mph west of Hwy. 17, 150 mph east of it (2018 NC Residential Code, Table R301.2(4), note h). Where a parcel sits between US 17 alignments, the county's Building Safety office confirms which side applies.

Inside the city limits, Wilmington sets its own rules for a lot. Most of them sit in one code: the Land Development Code, Chapter 18 of the city code. It covers zoning, dimensional standards, site plan review, historic districts, conservation resources and building in the floodplain. The city's zoning and planning staff carry that work, with its planning commission and its Historic Preservation Commission. A lot's zoning district, setbacks, tree rules and flood provisions are all read out of Chapter 18. A neighbor two streets over, on unincorporated county ground, answers to a different code.

Site plan review sits ahead of the building permit. Under Sec. 18-588, a building permit for a development project waits until its site plan is approved. The code requires a pre-application meeting with city staff before a site plan goes in. It requires one too for development in the 100-year floodplain. The sequence itself is fixed: the plan is reviewed before construction begins. Some lots carry more: historic-district standing, a mapped flood zone, a conservation resource. On those lots, site plan review is where competing requirements first meet on paper. It is why our design-and-permit sequence opens with a regulatory read alongside the site read.

Who issues the building permit is the part of the process a city owner is least likely to guess. Sec. 18-600 covers construction, plumbing, HVAC, electrical, sign and change-of-use work. None of it may begin inside the city without a permit. The code lets a permit issue only for work that conforms to the Land Development Code. The city's own building-permit guidance names the issuing office: New Hanover County issues all building permits in Wilmington. The city's Zoning Division reviews each proposed structure against the Land Development Code. So a city lot passes through two counters. The first is the city's Zoning Division, at the Skyline Center, 929 North Front Street. The second is New Hanover County Building Safety, at the Government Center, 230 Government Center Drive. Applications there go through the county's COAST portal. A county permit can sit on hold until the city's review is satisfied. The same section requires every application to locate any Areas of Environmental Concern under the state's Coastal Area Management Act (CAMA). And it names the CAMA permit officer: the local permit officer that the NC Division of Coastal Management designates.

In the city's locally designated historic districts, an addition, a replacement or new construction needs approval first. That approval is a Certificate of Appropriateness from the Historic Preservation Commission. It says the exterior plans fit the district's historic character, and it comes before the building permit. Under Sec. 18-597, major work starts with a required pre-application meeting. The application then follows the city's application submittal schedule and adopted fee schedule. The commission secretary can approve a list of minor works administratively. That list includes storm windows and doors, most fences, shutters and paint colors. It also includes garage doors, rear-yard decks, and walkways, driveways and patios. Each of those has to follow the city's published design standards for historic districts and landmarks. A Commission certificate lapses if work has not started within 12 months. A staff-approved one lapses after six months, and one six-month extension is available.

An exterior scope that needs the full Commission is planned around two clocks. The first is the city's submittal schedule for each Commission meeting. The second is the certificate's 12-month window to start work. We plan a historic-district renovation so the work the Commission reviews is drawn, filed and heard while the work inside goes ahead.

Floodplain review runs on the building permit's own clock. Under Sec. 18-269, the city's floodplain administrator approves floodplain compliance at the point of building permit application. The floodplain permit then carries paperwork of its own after the pour. An elevation certificate is due within 21 days of the lowest floor being set. A finished-construction certificate is due before the final zoning inspection. On a creek or riverfront lot, up to three reviews can be live at the same time. One is the floodplain review. Another is the historic-district review, where one applies. The third is the CAMA certification the permit section calls for.

Wilmington's older lots come with a house already on them.

Renovating a pre-war Wilmington house

Downtown and in the streetcar suburbs of Carolina Place, Carolina Heights and Forest Hills, nearly every lot already carries a house. Often it is one worth keeping for its street presence, even where its performance sits decades behind what its owners expect. That is why whole-house renovation of a pre-war house is the usual project. A renovation at that depth usually starts with a gut to the studs. The air barrier and insulation are then planned around framing someone else laid up a century ago. The mechanical system is replaced, sized to the envelope once it is tight. Inside a historic district or overlay, any exterior change the street can see also needs a Certificate of Appropriateness. On a downtown lot the build is often staged from an alley. Specimen trees are protected before the first delivery. The house is made weathertight before the Commission-approved exterior work closes it back up.

New construction in Wilmington usually means a creek lot or a split one.

New construction inside the city limits concentrates on two kinds of ground. The first is creek and sound infill. That means a replacement house, or a build on a long-held family lot along Bradley Creek, Hewletts Creek or Greenville Sound. There, flood elevation, the wind line and any conservation-resource boundary shape the footprint before floor-plan preference gets a vote. The second is new homes on a split urban lot. That is a single parcel divided from a larger one, inside an established in-town block. There, the block-face setback rule and the neighboring structures' scale matter as much as the zoning district's table does. Both start from the site analysis, and both answer to the same Land Development Code a renovation two streets over answers to.

Which of the three a lot is asking for is often plain from standing on it. A house on a Carolina Heights block with an intact roofline and a neighbor's addition two doors down usually argues for renovation. A long, narrow buildable strip left over after a larger parcel was split argues for new construction cut to fit it. A generous rear or side yard behind an existing house is where an accessory dwelling can fit. That works where the code and the utilities both cooperate, and where the lot's access allows it.

An ADU in Wilmington needs a zoning answer first.

The Land Development Code lists an accessory dwelling as a use of its own (Sec. 18-200). A lot with a single-family house can have one. It can stand apart, as a garage apartment or a backyard cottage. It can join the house by a roof and at least one wall. Or it can be an internal unit, partitioned off inside the house with its own outside entrance. It can be built new, converted from an existing building or added on. Its size is capped at half the main house's floor area, or 1,200 square feet, whichever is less. It is permitted with conditions in the R-15, R-10, R-7, R-5, R-3, MD-10, MD-17, RO and historic districts. A lot still zoned in a legacy district, such as R-20, keeps the rules in force on November 30, 2021 (Sec. 18-102). On a larger creek-side or streetcar-suburb lot, an accessory dwelling can be a useful answer, and the forms one can take are varied. On mapped ground the floodplain article adds terms of its own. A detached unit there may not be heated or cooled unless it meets the requirements for a principal building (LDC Sec. 18-270(B)(7)). So a detached unit on a creek lot is a floodplain question as much as a zoning one. Whether it works on a specific Wilmington parcel is a feasibility question. We settle that with city zoning staff and the floodplain administrator before it becomes part of a design.

Wilmington's oldest lots were drawn for a working port.

Wilmington, the seat of New Hanover County, grew as a port on the Cape Fear River. Its downtown and streetcar suburbs were built out before the Second World War, and much of that housing predates air conditioning.

The city grew on the east bank of the Cape Fear River, opposite Eagles Island. That is well upriver of the point where the river reaches the Atlantic. Its oldest ground still reads as a working port. Downtown is a historic district of narrow, deep in-town lots, laid out on a grid drawn before the automobile, let alone the window unit. Beyond it sit the streetcar suburbs, Carolina Place, Carolina Heights and Forest Hills. They filled in along the lines the city ran out from downtown, in the decades after. A house on one of those lots was built for cross-ventilation and shade before it was built for anything else. That still decides what a renovation there is actually solving.

Past the streetcar era, the city grew a different way. Subdivisions platted for the automobile spread out toward the university. Creek and sound frontage filled in later still, once bridges and paved roads made the tidal edge commutable. The Pine Valley area and the neighborhoods around the University of North Carolina Wilmington hold mid-century suburban lots. Those lots are wider and shallower than the downtown grid, and built for the car. Airlie Road runs along the sound past Airlie Gardens toward Wrightsville Beach, and the ground it serves is sound frontage. Inside the city limits, a parcel there answers to the same code as a parcel downtown.

The result is four kinds of ground inside one city limit. A historic urban lot comes with an existing house, an alley or a rear easement. It also comes with a review board that has an opinion about the street elevation. A streetcar-suburb lot is usually smaller and closer to its neighbors than a newer suburban lot. A creek or sound lot brings flood mapping and a conservation-resource boundary. An infill split is one legal lot cut from a larger one. It raises a question of its own: which code governed the parent parcel, the city's or the ordinance for unincorporated New Hanover County?

That last distinction matters because a Wilmington mailing address can extend well past the corporate limit. That is the city line, and it decides which code applies. Outside the city limits, most of New Hanover County answers to the county's Unified Development Ordinance; inside them, the city's own code governs. A postal address reading "Wilmington, NC" covers a great deal of unincorporated ground the county still governs. That is why the first thing a site analysis settles is which side of the corporate line the parcel falls on. Everything downstream changes with that answer: the zoning district, the setback, the tree rules, the review board and the office that takes the application.

Wind and flood rules can change from one Wilmington lot to the next.

Here, the wind-speed line runs through the city itself. Table R301.2(4) of the 2018 North Carolina Residential Code sets New Hanover County's ultimate design wind speed in two zones. Its note h draws the division at the highway: 140 mph west of Hwy. 17, and 150 mph east of it. Around Wilmington, US 17 runs through the city. It crosses the Cape Fear Memorial Bridge, then follows Oleander Drive and Military Cutoff Road up to Market Street. Market Street itself, from downtown to Military Cutoff Road, is signed US 17 Business. Ground seaward of both routes is simply 150 mph. For a parcel between them, New Hanover County Building Safety, which issues the building permit, confirms which side applies. The figure belongs to the wind zone. What the lot decides is exposure, a rating of how open the land around the house is to the wind. The structural engineer settles that before the roof, the openings and the continuous load path are sized to whichever speed governs.

Flood mapping follows the water, and its lines fall very differently across the same ground. Bradley Creek, Hewletts Creek, Greenville Sound and the Cape Fear riverfront are mapped panel by panel on FEMA's Flood Insurance Rate Maps. Three questions follow for any address there. Which flood zone reaches it? Does it carry a published base flood elevation? Does a Coastal A line touch it? The answers come from FEMA's Flood Map Service Center and the NC Flood Risk Information System, read for that specific address. A base flood elevation is the height the water is expected to reach in a flood with a 1 percent chance in any year. Where one is published, the city sets the lowest floor at least two feet above it. That added height is called freeboard. Where none is published, the rule becomes two feet above the highest adjacent grade. Both of those two-foot margins are the city's own, written into its floodplain article. The FEMA map supplies only the base elevation; the two feet are added on top of it.

That elevation rule reaches renovation too. On an older creek-front house, that is the provision that surprises people. The two-foot standard applies equally to new construction and to substantially improved construction. Under the city's code, a substantial improvement is work costing at least half the building's market value. Repair work from the five years before counts toward that cost. An alteration to a historic structure, as the code defines one, is left out, as long as the building keeps its historic designation. Whether a particular remodel crosses into substantial improvement is a determination the floodplain administrator makes. The answer can turn a kitchen-and-baths scope into a conversation about raising the whole house.

A lot can fall in a Coastal High Hazard or Coastal A zone. Both are flood areas where the code expects storm waves on top of the rising water. There, an enclosed area below the flood elevation is built to let water pass through it. The code accepts breakaway walls. It also accepts open latticework or insect screening with an opening ratio of at least 40 percent. It holds the breakaway walls themselves to a safe loading resistance of 10 to 20 pounds per square foot, unless an engineer certifies something stronger. The idea is a wall designed to fail on purpose, so the house above it stands. The space below that elevation is for parking, access and limited storage only, and any enclosure below base flood elevation needs flood openings. A ground-floor garage or storage room on a creek lot is detailed to that from the first plan.

Away from the water, the constant is the canopy. Much of the streetcar-suburb ground, and a good share of the creek-adjacent lots, sit under mature live oak, magnolia and pine. That shade cuts both ways. It lowers the cooling load through the summer. It also slows how fast a wall assembly or a roof deck gives up the water it took on, because less sun reaches either one. Drainage varies with the ground as well, and a soils report settles it for a specific lot. Salt air reaches the sound side as well as the beach. A steady onshore wind carries it across Wrightsville Beach to Greenville Sound and Airlie Road. It does the same to any tidal shoreline in the county. Shade, slow soil and airborne chloride are a durability problem in combination, which is the case moisture planning before it appears is built around.

A site analysis on Bradley Creek or Hewletts Creek reads all of it together. It notes which side of the note-h wind line the parcel falls on, and whether the county's Building Safety office has to confirm it. It reads what the current FEMA panel shows for that address, and whether a Coastal A designation applies. It also reads how deep the canopy sits, and how the ground drains after a heavy rain. Two parcels a few hundred feet apart on the same creek can carry different base flood elevations. Their wind exposure can differ too, so the analysis is drawn from the parcel itself.

On a century-old Wilmington lot, most of the decisions are already made.

Coastal wetlands, primary nursery areas

75 ft setback from the edge of the resource (LDC Sec. 18-286, Table 18-286).

404 wetlands (Army Corps)

30 ft setback from the edge of the resource.

Building into the setback

Up to 25 percent of the setback area, with stormwater treatment, stopping at the buffer (Sec. 18-286(C)(2)).

Undisturbed buffer at the resource edge

Half the setback or 35 ft, whichever is less, measured landward from the resource edge (Sec. 18-287(A)).

Small-lot exemption

A lot of one acre or less recorded before 1985 is exempt from these standards; the exemption does not extend to accessory structures (Sec. 18-284(B)(1)).

On a historic-district lot, a formal site analysis of the parcel starts with a question few suburban lots raise. How much of this parcel did someone else decide a hundred years ago? The analysis maps the boundary of the local historic district or overlay the lot sits in. Inside one, work visible from the public right-of-way needs a Certificate of Appropriateness before it needs a building permit. The analysis records the existing house: which way it faces, its structural condition and its foundation type. Many older in-town houses sit on brick or masonry piers. It also records what the original builder settled about which rooms face the street, and which face the alley.

The analysis also reads the setback, which on many older Wilmington lots follows the block face or the Commission. In the R-5 and R-3 districts, Sec. 18-28(A)(2) lets the front and rear setbacks drop to within five feet of the block face's average. Inside the 1945 corporate limits, a side setback is 10 percent of the lot's average width, or the district minimum if smaller. In the HD, HDR and HDMU historic districts, the Historic Preservation Commission sets the setbacks (Table 18-58). Under Sec. 18-422, a porch may also project up to eight feet into a required front or rear setback. That often leaves room for a period-appropriate front porch.

On many downtown blocks, the required setback is whatever the block already agreed to, a century ago.

Height has exceptions of its own. The code lets certain features rise above a district's height limit. Chimneys, smokestacks and flues may rise up to eight feet above the roofline. Radio and television antennas may rise up to twenty feet above it. Belfries, spires, steeples and cupolas are exempt outright. A parapet wall may rise up to six feet above the district's allowable height. Some houses have a period roofline, a cupola or a chimney older than the current code. On those, the analysis checks the exceptions against the roof itself.

On a creek-front lot, the analysis also finds the conservation resource, where one is present. That may be a coastal wetland, a wetland the Army Corps regulates, or a primary nursery area. It also finds the setback and undisturbed buffer the code attaches to that resource. Inside that setback and buffer the code is explicit about trees. A permit is required to remove any tree within the setback or the buffer (Sec. 18-317). Otherwise, work in the buffer is held to narrow pathways, water-dependent structures and a short list of management activities. Elsewhere on the lot, which trees the city protects, and when removing one needs a permit, are questions for city zoning staff. Before design begins, the analysis also finds any easement, alley or rear access, all common on older in-town lots.

Whether the parcel is downtown or on the water, the analysis usually settles:

• the local historic district or overlay the lot falls in, if any, and whether the planned work needs a Certificate of Appropriateness
• the setback rule for the lot: the block-face average in R-5 and R-3 (Sec. 18-28), or the Commission's figure in a historic district
• the flood zone and base flood elevation for the parcel, and how high the code then sets the lowest floor
• whether a conservation resource is associated with the lot, and the setback and buffer that attach to it
• which side of the Hwy. 17 wind line applies, confirmed with the county's Building Safety office where the parcel sits between US 17 alignments
• on a renovation, which way the existing house faces, its foundation type and its structural condition
• how sun and shade move through the canopy across the year, and which views earn their glazing
• access: alley, easement or shared drive, and what it means for construction staging

You receive that document in writing before any design work starts, in the private client workspace. For the rest of the project, it stays the reference point that the building standard we publish is checked against. On a lot with this much already decided, the analysis works as an inventory. Some decisions are fixed. Others can be negotiated through the Commission. The rest are simply the conditions of the parcel.

FORTIFIED Gold works under a historic roofline too.

FORTIFIED Gold reads differently on a century-old Wilmington house than it does on a new one. On a renovation, it is a roof-first standard. The roof deck, the covering, the connections and the openings are brought up to the same tier IBHS applies to new construction. That work happens underneath a roofline the Historic Preservation Commission has already approved for its visible form. New construction here means a creek-front replacement, or an infill house on a split downtown lot. There, FORTIFIED Gold is the design basis from the first drawing. It covers the roof, the walls, the openings and the continuous load path that ties them together. Either way, we pursue the designation, and an evaluator credentialed by IBHS inspects and documents the work. That is why many insurers recognize it, and a builder cannot simply assert it.

The airtightness target is the same wherever the house sits: sub-1.0 ACH50. It is written into the drawings, carried into construction and tested by blower door before handover. It stays a design target until that test reports the number. On a gutted-to-the-studs renovation of a balloon-framed house, that target is harder to reach than on new construction. Balloon framing runs continuous stud cavities from the sill to the roofline, with no fire blocking to slow air movement. And every junction where new framing meets the original structure can break the air barrier, unless it is detailed and inspected deliberately.

The Commission reviews what you can see from the street. What the blower door tests is what you cannot see at all.

Drying potential matters more under a mature canopy than it does on an open lot. Much of Wilmington's older housing stock sits under exactly that kind of shade. So a wall assembly is chosen for two things. One is how quickly it can dry to at least one side. The other is how well it resists water on day one. Together they make a durability decision suited to a shaded, humid site. The same logic applies to the mechanical system on a renovation. Replacement equipment is sized to the house's actual load once the envelope is tightened. That way, it runs long enough to pull humidity from the air, and avoids short-cycling into a house that feels damp.

Each of those decisions is written into the drawings and held through construction. That is what building and testing the air barrier amounts to on a project like this. The essay on tight houses that breathe lays out why airtightness on the coast is a moisture and comfort question first. That carries the same weight on a century-old house as on a new one built two lots down from it.

The Commission's remit stops at the surface. Its authority under the Land Development Code reaches the appearance of what the street can see: materials, massing, window proportions and roof form. A house can hold its Certificate of Appropriateness and still fail badly at controlling moisture. The reverse is just as true: an airtight, correctly flashed wall can sit behind almost any facade the Commission is likely to approve. We treat those as two separate questions, answered by different people for different reasons. That keeps a historic renovation from turning into a trade between how the house looks and how it works.

Where a Wilmington lot sits says as much as its zoning.

Wilmington reads as a string of distinct areas. Where a lot sits says almost as much about the project ahead as its zoning district does. Downtown and the historic district hold the oldest housing stock and the closest Commission review. Farther out, the streetcar suburbs of Carolina Place, Carolina Heights and Forest Hills mix historic-overlay blocks with ordinary ones. Farther still, the college-area neighborhoods around UNCW and the Pine Valley area give way to mid-century suburban lots. Little historic review reaches them.

Read as project conditions, the city divides roughly like this:

• downtown and the historic district, where a Certificate of Appropriateness applies to most visible exterior work
• the streetcar suburbs of Carolina Place, Carolina Heights and Forest Hills, with historic-overlay ground mixed in among ordinary blocks
• the Pine Valley and college-area neighborhoods around UNCW, mid-century suburban lots mostly outside historic review
• the Bradley Creek and Hewletts Creek corridors, tidal frontage carrying its own flood and conservation-resource questions
• Airlie Road and the Greenville Sound shoreline, running past Airlie Gardens toward the Wrightsville Beach bridge

South of the creek neighborhoods, the sound frontage runs on toward the Masonboro Sound shore. Wilmington's limits run through that community. Much of Masonboro lies outside them, under the county's UDO. So along the same tidal creeks, the conservation-resource questions can fall under the county's code a street or two from city ground. East across the Intracoastal Waterway is the barrier island at Wrightsville Beach, the nearest beach to the sound neighborhoods.

North along Market Street, the city gives way to the Market Street corridor at Ogden. That is unincorporated ground of platted subdivisions and older lots, under the county's code. Further up the Northeast Cape Fear River sit the larger parcels of Castle Hayne. There, the ground opens into more rural lots. West across the Cape Fear, our own county begins at the Brunswick County town of Leland. Its newer subdivisions sit on flat, poorly drained flatwoods.

These places share Wilmington's climate and, mostly, its wind-speed table. The code changes at each line. Chapter 18 applies inside the city. The county UDO applies in Ogden and Castle Hayne, and Leland's own code applies across the river.

Tropical Tides is based in Southport. The drive to downtown Wilmington is about 28 miles, roughly 40 minutes, on NC 133 and over the Cape Fear Memorial Bridge. We design and direct Wilmington projects from there. Wherever the lot falls, vetted building partners build under our direction and North Carolina Residential Contractor License #109520. We belong to the Brunswick County Home Builders Association, and the number is 910-946-5512.