Custom home builder in Winnabow, North Carolina, on acreage between the river and US 17.

Here's what the rules decide for your Winnabow lot.

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

• The county must check your septic site before you get a building permit.
• A lot of at least one acre can hold more than one house.
• Where a flood height is on record, the house must sit two feet above it.

At a glance

County

Brunswick County

Jurisdiction

Unincorporated; the county zones and permits it directly

Ultimate design wind speed

140 mph west of US 17, 150 mph east of it (2018 NC Residential Code); the line runs through Winnabow's crossroads

Flood mapping

FEMA's Flood Insurance Rate Map, read at fris.nc.gov

Drive from Southport

About 18 miles, roughly 30 minutes via NC 87 north through Boiling Spring Lakes to the US 17 junction

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

Brunswick County reviews Winnabow permits.

Jurisdiction

Unincorporated; Brunswick County governs Winnabow directly under its Unified Development Ordinance

Adopted code

Brunswick County Unified Development Ordinance (Appendix E to the County Code): Article 4 zoning districts, Article 5 uses and accessory structures, Article 7 flood damage prevention

Permit authority

Brunswick County Central Permitting, Government Center, 30 Government Center Drive NE, Bolivia, NC 28422; Environmental Health, at 25 Courthouse Drive in the same complex, reviews well and septic siting

Flood-map source

FEMA Flood Insurance Rate Map panels and the NC Flood Risk Information System (fris.nc.gov); the county flood ordinance adopts the Flood Insurance Study revision dated December 6, 2019, and its later revisions

Ultimate design wind speed

140 mph west of US 17, 150 mph east of it (2018 NC Residential Code, Table R301.2(4), note c); the parcel's side of the highway sets the zone, and the engineer settles exposure category lot by lot

Winnabow is unincorporated. The same county government that runs the rest of unincorporated Brunswick County answers every regulatory question here. Those questions run from a parcel's zoning district to how deep its setback runs.

A Winnabow mailing address near Leland or Boiling Spring Lakes can still sit inside a town's limits. The county parcel record is the first thing to check.

The county's Unified Development Ordinance decides a Winnabow parcel's zoning district and setbacks. It also sets the outbuildings and second dwellings a lot can carry, and the flood standards a house on it has to meet. The same ordinance governs a lot outside Shallotte or Bolivia.

Brunswick County Central Permitting takes in and coordinates the review. Its office sits at the Government Center, 30 Government Center Drive NE, in Bolivia, the county seat. That's a short drive down US 17 from the crossroads. Central Permitting is the counter a builder deals with day to day. Behind it sit the reviews that decide the application. Planning checks the zoning use and the setbacks the structure has to hold to the property lines. The county's building inspections office issues the construction permit and inspects the work as it goes up. Environmental Health, at 25 Courthouse Drive in the same complex, reviews any lot that will run on a well or a septic system.

The county's flood ordinance sets the freeboard, the extra height it adds above the base flood elevation. That elevation is the water level of a flood with a 1 percent chance each year. Where a parcel's Special Flood Hazard Area has a base flood elevation on record, the regulatory flood protection elevation is that number plus two feet; where no base flood elevation has been established, it's at least two feet above the highest ground next to the house. New construction and any substantial improvement of a residential structure has to bring its reference level, crawlspace or slab included, up to that line. A substantial improvement is work, within any one-year period, that costs at least half the building's market value before the work starts. The rule is countywide: it reaches a Town Creek lot the same way it reaches a lot on the Intracoastal.

The same ordinance carves out one exception that matters on acreage, where outbuildings are ordinary. An accessory structure can qualify for that exemption two ways. Its footprint can be under 150 square feet, or it can represent a minimal investment of $3,000 or less. Either way, it also has to meet the ordinance's accessory-structure criteria, flood openings among them, to stay exempt from the elevation and floodproofing standard. That lets a pump house or a small shed sit where it's useful. A barn, workshop, or detached garage of any real size is held to the standard like any other accessory structure in a flood hazard area. It needs an elevation or floodproofing certification to prove compliance.

A second house on Winnabow acreage is often allowed.

Accessory dwelling

One per lot, attached or built to accessory-structure standards; the primary lot must meet the district minimum area, keep a single-family appearance from the street, and add one off-street parking space; a travel trailer or RV may not serve as one (UDO Sec. 5.4.2)

Multiple dwellings on one lot

Allowed on a lot of at least one acre unless the Planning Director modifies the minimum; capped at three outside the rural (RR) district, where the ladder runs from four residences on 10–19.99 acres to eight on 50 acres or more, subject to a site plan (UDO Sec. 5.4.3)

Accessory structure setback

At least five feet from an adjoining lot line, and no taller than the district height limit, 35 feet in the rural and suburban residential districts (UDO Sec. 5.4.1)

Three kinds of project come up on Winnabow land. One is a custom home on acreage that has never carried one. Another is a renovation or replacement of an older farmhouse or ranch. On the larger parcels, a third is a second dwelling alongside the first. All three answer to the same county UDO and start from the same site analysis. What differs is how much of the parcel is already spoken for. That could be an existing structure, an established drain field, or a driveway that has been there for decades.

New construction on cleared or wooded ground

New construction in Winnabow tends to start from one of two conditions. On a cleared field along NC 87, or one of the county roads feeding it, the site analysis chooses among open options. It decides where to place the house relative to the road, the tree line, and the prevailing wind, with little existing infrastructure to work around. On a wooded acreage parcel, the same analysis chooses where to clear. It weighs which trees give shade worth keeping against which stand between the house and the drain field the soil actually supports. Both answer to the same wind-speed table and flood-map question a new home on a beach lot would face.

Renovating a Winnabow farmhouse or a 1980s ranch

Winnabow's older houses include farmhouses that have passed through a family, and brick ranches put up to an earlier code cycle. Both kinds sit on a well and a drain field sized for them decades ago. Renovating a Winnabow farmhouse starts with the two systems the house can't see. North Carolina's on-site wastewater rules size a septic system by bedroom count. So adding a bedroom is a wastewater question before it is a framing question. Environmental Health confirms whether the existing system can carry it, or has to be repaired or expanded first. The drain field's location also fixes where an addition can go. Above grade, the questions are the ones any older house raises, in a Winnabow order. The roof deck gets resealed and refastened toward FORTIFIED Gold under the canopy. An air barrier gets drawn continuous through walls that never had one. Equipment gets replaced at the load the tightened envelope creates. Where the parcel touches a mapped flood hazard area, the county's substantial-improvement test is run on the scope before it is priced. If the work counts as a substantial improvement, a house in the mapped area has to come up to the regulatory flood protection elevation.

An accessory dwelling unit on Winnabow acreage

Acreage is what makes an accessory dwelling unit a realistic conversation in Winnabow. On a quarter-acre subdivision lot, it is a rare one. Two separate provisions are in play, and they are easy to confuse. The county UDO permits an accessory dwelling in its residential districts. It defines one as a stand-alone dwelling with any or all components of a residence, on a lot that already has a principal dwelling. That use is subject to the conditions in the ordinance's accessory-use section. Separately, the ordinance allows more than one principal dwelling on a lot of at least one acre, unless the Planning Director modifies that minimum. That is capped at three residences everywhere except the rural district. There, the ceiling climbs with the acreage, on a published ladder. One path is an accessory unit tied to the main house. The other is a second principal dwelling, standing in its own right. Which one fits a parcel is a question for the planning office, and for the septic capacity underneath. That question gets settled before a layout is drawn.

What a specific Winnabow parcel will actually carry comes down to septic capacity before it comes down to zoning. A second dwelling or an accessory unit needs an approved wastewater arrangement of its own. Environmental Health tends to set the real ceiling on how many roofs a given acreage supports. The ADU feasibility test on acreage works the zoning path and the septic question together.

Winnabow is farmland and river swamp between Leland and Southport.

Winnabow occupies the crossroads where US 17 meets NC 87, on the west bank of the Cape Fear River. It sits in Town Creek Township, roughly midway between Leland and Southport. The name marks this place on the map, and a stretch of unincorporated Brunswick County ground. It comes from Winnabow Plantation, the Russell family's land here. Daniel L. Russell was born on that land in 1845; he later became the 49th governor of North Carolina. The ground has long been worked as farmland and timber. The parcels still show it: open field, planted pine and river swamp, with platted residential lots the exception.

Four kinds of ground make up most of what a buyer finds in Winnabow. Wooded acreage is common here: ten, twenty, or fifty acres of pine and hardwood. Some of it has stayed in one family for years and is now ready to build on or divide. Open farmland lies along NC 87 and the county roads that feed it, cleared and worked, with a building site still to be chosen. A handful of platted subdivisions have gone in along the corridor, on quarter- and half-acre lots closer to a beach-town scale. Along Town Creek and the Cape Fear itself, a few parcels carry river or creek frontage. Rice-field swamp lies behind them, with a different set of questions attached.

NC 133, the river road, runs south from Winnabow along the Cape Fear's west bank toward Southport. It passes the turnoffs for Brunswick Town and Fort Anderson State Historic Site. That colonial river port was later refortified for the Confederacy, and is now open to the public. It also passes the turnoff for Orton Plantation, which stays in private hands and closed to visitors. Behind the road, Town Creek and its tributaries drain a wide stretch of low, wooded ground back toward the river through old rice-field swamp.

The well and the septic system decide the house first.

Two systems shape a Winnabow house before the design starts: the well that supplies it, and the septic system that serves it. The county ordinance is candid about the split. RR, the rural residential district, is common on this kind of ground. The ordinance expects development there to rely mostly on individual wells and septic tank systems. The same article describes the suburban residential districts, R-7500, R-6000, and SBR-6000, as meant for properties served by public sewer and water systems. Which of those applies to a given Winnabow parcel is a zoning-map question. It also moves the budget. On the acreage side of that line, the ground has to prove it can carry a house before a floor plan exists.

Brunswick County Environmental Health evaluates the proposed septic site before a building permit issues. A registered environmental health specialist walks the parcel. The specialist reads where a drain field would sit, how the soil there drains, and how wet it stays. The specialist also checks how deep a usable layer runs before it meets a restrictive horizon. That horizon can be sand over clay, a seasonal water table, or rock close to the surface. The county runs the customary North Carolina sequence of three permits, each conditional on the one before it. An improvement permit says the site will support a system. A construction authorization covers the system itself. An operation permit follows once it is built and inspected. On land this wooded and low, hydric and poorly drained soils are common. That makes an early soils evaluation the sensible move, before a house site is chosen.

Near Town Creek and its branches, the county's flood maps track the creek the way they track any other named waterway: parcel by parcel. The FEMA Flood Insurance Rate Map panel for an address carries that mapping. The NC Flood Risk Information System serves the same data online. Whether a given lot falls inside a mapped Special Flood Hazard Area is a question the FEMA panel answers for that parcel.

State coastal permitting under the Coastal Area Management Act, or CAMA, enters the picture only at the water. Winnabow has no ocean shoreline. The Ocean Hazard Area of Environmental Concern has no ground here to reach. Neither does the erosion-rate setback that shapes an oceanfront lot on the county's barrier islands. What can attach is the estuarine shoreline and public trust category. That applies to parcels that front the Cape Fear, or a tidal reach of a creek feeding it. The Division of Coastal Management inside NC DEQ administers those areas, and that office decides whether a specific waterfront parcel sits inside one, what limit on impervious surface applies there, and whether a CAMA permit is required.

The same US 17 that gives Winnabow its address also draws a structural line through it. Note c to Table R301.2(4) of the 2018 North Carolina Residential Code sets the county's ultimate design wind speed. It runs 140 mph west of the highway, and 150 mph east of it. At Winnabow, the highway runs through the middle of the community. Two parcels a couple of miles apart, one on each side of the road, carry different numbers. Which side of US 17 the parcel lies on settles that figure. What the structural engineer settles lot by lot is the exposure category. That rating reflects how rough or open the ground around the site is. It reads differently on a house site cleared out of pine canopy than on an open field. The east side of the road carries a second consequence. Section R4601.1 of the same code applies its coastal and floodplain construction chapter to all construction in the 150 mph zone. A parcel east of US 17 meets Chapter 46 on wind speed alone. One to the west meets it only if the flood map places it in a regulatory floodplain. The climate is the same on both sides: hot, humid Cape Fear summers. There's less salt in the air here than at the beach, and less breeze too.

Acreage asks more of a site analysis than a platted lot.

On ten acres, three questions come before a house. They ask which soil will take a drain field, where the well can sit clear of it, and which trees are worth their shade.

A site analysis reads differently on ten wooded acres than on a platted quarter-acre lot whose pad elevation a subdivision engineer set years ago. A finished subdivision lot comes with a graded pad, a utility stub, and a driveway apron. On Winnabow acreage, none of the three exists yet, so the analysis does more of the deciding.

• Where on the parcel the house actually belongs: the high, dry ground, and how far back from the frontage the approach should carry it
• Where the soil will support a septic drain field, and how that site has to sit relative to the well, house, and property line
• Where the well itself goes, upstream of the drain field and clear of any low ground that could carry runoff toward it
• How the driveway reaches the building site from the road frontage, and where the power line, and where available the water line, run alongside it
• Which trees on the parcel are worth keeping for shade and screening, and which stand in the way of the house, drive, or drain field

Each of those is a finding on the specific ground, driven by its soil, its fall and its canopy. The analysis is a written document that settles all five before a floor plan exists, and it goes into the client's project workspace. On Winnabow acreage, the analysis spends real attention on the dirt. The soil decides where the house, the well, and the drain field can each sit. A beach lot's analysis spends most of its attention on flood elevation and wind exposure.

The three decisions depend on each other. Move the drain field to a better soil reading, and the house site often has to move with it. Move the driveway to save a stand of mature pine, and the utility run gets longer. The site read before any design works through that sequence on paper. It lays out the well, the drain field, the drive, and the tree canopy against one plan, before any of them is locked in. A buyer still choosing between two acreage parcels gets the most out of this step.

Utility reach is a real variable on Winnabow acreage. Some parcels along the NC 87 corridor, and inside the platted subdivisions, sit near public water lines. Tying in there is a straightforward decision. Others, particularly the larger wooded tracts back from the highway, are well and septic by necessity. Their nearest main is a long private-line run away. The water provider confirms which case applies to a specific parcel, and what a line extension would involve.

Clearing is the other decision the county has a say in before it looks at a house. On a house lot, Brunswick County's stormwater ordinance, Sec. 1-13-206 of the County Code, has three triggers for a stormwater management plan and permit. The first is any activity that will ultimately disturb an acre or more of land. The second is filling or excavation that changes the ground surface by four inches or more. The third is any disturbance within 30 feet of the banks of a stream or other natural waterway. The first trigger exempts bona fide farm activity and timber harvesting on forestland. The second exempts the excavation Environmental Health approves for a septic system. A house site, a drive, and a drain field cut out of a wooded ten-acre tract can cross the first threshold without trying. A house site chosen close to Town Creek or one of its branches can cross the third. The clearing plan therefore goes to the county's stormwater administrator as part of the site analysis, with the limits of disturbance drawn on the survey.

On a Winnabow acre, the storm arrives through the trees first.

Mature loblolly and hardwood stand within striking distance of most house sites here. In a wind event, the roof answers falling limbs and uprooted trunks before it answers pressure alone. That is the reverse of the problem an open beach lot poses. It is also the local reason the design pursues FORTIFIED Gold, the top tier of the IBHS standard, on a Winnabow house. The standard calls for a sealed roof deck that keeps water out after the covering is stripped. It also calls for every fastener the schedule specifies, protected openings, and a continuous load path from ridge to footing. Each of those is inspected by an evaluator who works for neither the design side nor the construction partner. IBHS issues the designation. The practice pursues it, and an independent evaluator checks the work. Under a canopy, the roof deck is the piece of that list doing the most work.

Airtightness is the other half, and under the pines it's mostly about humidity. Sub-1.0 ACH50 is a design target, the figure the drawings are held to. It becomes a result only when the blower door confirms it, on the finished house before handover. This far inland, the sea breeze has mostly spent itself. The air under the pines holds its moisture through a summer night. Siding on a shaded elevation can go weeks without direct sun. A wall like that depends on what the assembly is built to do. The moisture plan for a shaded wall works through that. An air barrier is traced continuously across every rim joist, window rough opening, and mechanical penetration on the drawings. That keeps humid air from ever reaching a cool surface inside the assembly. A drainage plane behind the cladding carries bulk water down and out. Both are drawn before framing, because neither can be added at the seams once the sheathing is on.

Equipment sizing follows the envelope. A system chosen from a square-footage rule of thumb is oversized for a tight, well-insulated house. It satisfies the thermostat in a few minutes, and shuts off before it has wrung much water out of the air. That leaves a room that reads dry on the thermostat, and feels damp to everyone in it. A system sized to the calculated load runs longer, at lower output, and dehumidifies as it goes. That matters under a canopy that keeps the ground damp. The mechanical sizing method is decided alongside the airtightness target. On wooded acreage, the load calculation is where dedicated dehumidification gets weighed alongside the cooling coil.

Inland, the storm risk changes shape: less surge, more falling limb, and a wall that has to dry without much help from the sun.

Ventilation designed with the air barrier makes the case that a tight house can be a comfortable one too. That holds provided the fresh-air plan is drawn in with the air barrier from the start.

Read a Winnabow parcel by the road it fronts.

Winnabow reads best by corridor. A parcel's road frontage says more about what a buyer is getting than a subdivision name, since most of the ground has none. Zoning district, utility access and flood exposure all track the road a parcel fronts more closely than its compass bearing from the crossroads.

• The US 17 / NC 87 crossroads itself, where Brunswick County's two wind-speed zones meet within a few miles of each other
• NC 133, the river road, south past Brunswick Town and Fort Anderson, with river and Town Creek frontage on some parcels
• The farmland and wooded acreage back from both roads, where most of the community's larger parcels and its well-and-septic housing stock sit
• The few platted subdivisions along NC 87, closer in lot size and utility service to a town lot than to the acreage around them

North on US 17 and NC 87 alike, the corridor runs toward the Town of Leland up the highway. Its zoning code takes over at the town line. South on NC 133, the river road carries open county ground down to Southport at the river's mouth. At the city line, the county ordinance gives way to the city code. Southport is the small city where Tropical Tides is based, about 30 minutes away on NC 87. Carry on past Southport and the shoreline picks up the gated Town of St. James, an incorporated town with its own municipal code.

Shallotte farther down US 17 is another Brunswick County town where farmland has been filling in with houses. The rules change at each of these lines: town code here, county code there, and covenants on top inside a private community. The ground itself crosses those lines freely. Pine flatwoods, river swamp, and well-and-septic acreage run past every municipal boundary.

On any of these corridors, construction is partner-executed under Tropical Tides' direction, under North Carolina Residential Contractor License #109520. We're members of the Brunswick County Home Builders Association, and the number is 910-946-5512.