🏗 Licensed NC General Contractor · Cape Fear Region
Tiny Homes, ADUs, Shops Garages & Storage
BTL Buildings designs, permits, and builds tiny homes, accessory dwelling units, guest houses, in-law suites, custom shops, detached garages, pole barns, and storage buildings across Wilmington, Leland, Hampstead, Jacksonville, and the rest of the Cape Fear region. One licensed general contractor, start to finish — zoning review through final inspection.
We are not a jack-of-all-trades remodeler. BTL Buildings is a specialist general contractor focused on accessory dwelling units, custom shops, detached garages, and storage buildings — the structures that add usable square footage and real value to a property in southeastern North Carolina.
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Tiny Homes, ADUs & Guest Houses
Foundation-built tiny homes, detached accessory dwelling units, backyard cottages, guest houses, in-law and mother-in-law suites, granny flats, casitas, and garage apartments. Full kitchen, full bath, private entrance — a complete second home on the land you already own.
Single-bay and multi-bay shop buildings, mechanic and fabrication shops, woodworking shops, insulated shops with bathrooms and mezzanines, engineered metal shop buildings, and post-frame shops in every common size from 24x30 to 60x100.
One-car, two-car, three-car, and oversized detached garages. Tall-door RV garages, boat garages, garages with lofts, garages with bathrooms, and garage apartments with finished living space above. Slab, pier, or monolithic foundations.
Post-frame pole barns, equipment and implement storage, agricultural and horse barns, utility buildings, lean-to additions, covered work areas, and fully enclosed boat and RV storage buildings sized to your equipment.
Technically it stands for accessory dwelling unit. Practically, it is a second, fully independent home built on a lot you already own — kitchen, bathroom, private entrance, its own address in the eyes of a tenant or a family member.
You will hear a dozen names for the same thing: tiny home, guest house, backyard cottage, in-law suite, mother-in-law suite, granny flat, casita, garage apartment, carriage house, secondary suite. They all describe the same asset. The difference is only how you intend to use it.
“Tiny home” describes the size. “ADU” describes the legal classification. A small second dwelling on your lot is an ADU in the eyes of the county no matter which word you use — and building it on a permanent foundation instead of a trailer is what makes it legal to live in, financeable, and worth something later. More on tiny homes →
It is also the single highest-leverage thing most Wilmington homeowners can build. You already own the most expensive input — the land. Adding permitted, livable square footage to a lot you already hold is the shortest path from a mortgage payment to an income stream.
If you have been searching any of these terms in Wilmington, Leland, or Hampstead — you are looking for what we build.
The Case For Building
Why Build a Tiny Home or ADU in Wilmington?
The Cape Fear region keeps growing and lot prices keep climbing. Whether you want rental income, a place for aging parents, or simply more usable space, adding a permitted structure to land you already own is the most strategic upgrade available to a New Hanover, Brunswick, or Pender County property owner.
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Rental Income From Land You Already Own
Wilmington pulls year-round demand — tourism near Wrightsville Beach and downtown, UNCW students, travel nurses, and a tight long-term rental market. A permitted ADU turns unused backyard into monthly cash flow without buying another lot.
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Permitted Square Footage Drives Appraisal Value
Livable, permitted square footage is the number one driver of appraised value. A properly permitted ADU or finished garage apartment adds equity in a way a kitchen remodel simply does not — it is an asset, not an expense.
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Multi-Generational Living Without Losing Privacy
An in-law suite or mother-in-law suite keeps aging parents or adult children close while everyone keeps a front door of their own. Far cheaper than assisted living and far easier than moving.
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Shops and Garages Solve the Space Problem
Not every property needs a second dwelling. Sometimes you need a real workshop, a garage that fits the boat, or a pole barn for equipment. Same permitting expertise, same coastal engineering, same contractor.
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Flexible and Future-Proof
What starts as a home office becomes a guest suite, then a rental, then a place for a parent. A detached structure built to code gives you options a bump-out addition never will.
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Engineered for the Coast
Wind zones, salt air, humidity, and flood setbacks are not optional considerations in southeastern NC. We build for them on purpose instead of discovering them at inspection.
Beyond ADUs
Shops, Garages & Storage Buildings
Roughly half of what we build has no kitchen in it at all. Property owners across the Cape Fear region come to us for the outbuilding they have been putting off for years — the shop, the third garage bay, the pole barn, the enclosed boat storage.
These are simpler projects than an ADU, but they are not simple. Wind rating, slab thickness, door headers, electrical service capacity, setbacks, and impervious surface limits all still apply. We treat a 40x60 shop with the same engineering discipline as a dwelling.
Shops: mechanic, fabrication, woodworking, hobby, insulated, heated, with bathroom or mezzanine
Metal & steel buildings: engineered clear-span structures, coastal wind rated
Garages: 1-car through 4-car, oversized, tall-door RV, boat, with loft or apartment above
Pole barns: post-frame construction for equipment, agriculture, and covered work areas
Real ranges for southeastern North Carolina. These are starting benchmarks, not quotes — site conditions and finish level move them. Full breakdowns are in the pricing guide.
What is not in a per-square-foot number: lot clearing and grading, utility and septic connections, impact and permit fees, driveway work, surveys, and any variance process. These vary enormously by parcel and municipality — which is exactly why we do a site visit before quoting. Request a written estimate.
How It Works
From Zoning Question to Finished Building
Most people stall out before they start because they cannot get a straight answer about what is allowed on their lot. That is step one for us, not an afterthought.
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Site & Zoning Assessment
We evaluate your parcel against City of Wilmington or county regulations — setbacks, lot coverage, impervious surface, height limits, flood zone, utility and septic capacity. You find out what actually fits before you pay for design.
02
Scope & Written Proposal
Size, layout, foundation type, finish level, and every allowance in writing. Our $250 paid estimate covers the site visit and the itemized proposal, and it is credited back to your project at signing.
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Permits & Plan Review
We prepare the submittal, manage plan review comments, and pull the permits in New Hanover, Brunswick, Pender, or Onslow County. You do not sit in a permitting office.
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We Build It
One general contractor managing the subs, the schedule, and the inspections. Coastal wind detailing, moisture management, and corrosion-resistant hardware are standard, not upgrades.
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Final Inspection & Handoff
Certificate of occupancy where applicable, a walkthrough, and a building that will still be square in twenty years. If it is a rental, we can point you toward setup and management resources.
Why BTL Buildings
High Standards. No Excuses.
You do not need the most expensive contractor in Wilmington. You need the one who shows up, prices honestly, and builds it right the first time.
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Written, Itemized Pricing
No vague verbal ranges that drift upward after demo. You get a detailed written scope with allowances spelled out before anyone swings a hammer.
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NC Licensed & Insured
Verifiable license, real insurance. Ask us for it and you will have it the same day. Unlicensed outbuilding work is a very expensive way to save money.
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Coastal NC Experience
Wind zones, salt air, humidity, flood setbacks, and county-specific permitting across New Hanover, Brunswick, Pender, and Onslow. We build here, not from a catalog.
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You Get a Call Back
The most common complaint about contractors in this market is silence. One point of contact, and you will know where your project stands.
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Specialists, Not Generalists
ADUs, shops, garages, storage buildings. We build the same handful of structures over and over, which is why the schedules and the numbers hold.
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Permits Handled
Zoning research, plan submittal, review comments, inspections. Included in scope, not billed as a surprise line item at the end.
Client Results
Real Builds, Real Cape Fear
★★★★★
We wanted a guest house for my mother and had no idea whether our lot could even take one. BTL ran the zoning first, told us exactly what would fit, and built a 600 square foot in-law suite in the backyard. She has her own front door and we still have a yard.
Sandra M.
Leland, NC — ADU / In-Law Suite
★★★★★
Two other outfits gave me a phone ballpark for a 40x60 shop and both numbers were fantasy. BTL charged the $250, came out, measured, and handed me a real proposal. Finished shop came in on that number. Insulated, bathroom, three bays.
Derek P.
Hampstead, NC — Custom Shop
★★★★★
Needed a detached garage tall enough for the boat plus storage for the tractor. They did a garage with a lean-to on the side and handled the permit with the county. Wind rating and everything. Straightest process I have had with a contractor.
James K.
Wilmington, NC — Garage & Storage
Common Questions
Tiny Home, ADU, Shop & Garage FAQ
The questions we field every week from property owners in Wilmington, Leland, Hampstead, Jacksonville, and across the Cape Fear region.
An ADU — accessory dwelling unit — is a second, fully independent living space built on a lot that already has a primary home. It has its own kitchen, bathroom, and entrance. People also call them guest houses, in-law suites, mother-in-law suites, backyard cottages, granny flats, casitas, or garage apartments. ADUs are permitted in much of Wilmington, New Hanover County, Brunswick County, and Pender County, but setbacks, lot coverage, impervious surface limits, and utility connections all vary by zoning district. BTL Buildings runs a site and zoning review on your specific parcel before you spend a dollar on design.
Detached ADU construction in southeastern North Carolina generally runs $180–$260 per square foot of finished living area, which puts a 400–800 sq ft stick-built ADU in the $75,000–$200,000 range. Garage conversions and above-garage apartments often come in lower per square foot because the shell already exists. Site work, utility runs, impact fees, and septic capacity are priced separately because they vary enormously lot to lot. We give you a written, itemized number after a site visit — not a phone guess.
Functionally very little — the terms describe the same asset used different ways. A detached ADU or backyard cottage is a standalone structure. A guest house is usually a detached ADU used for visitors or short-term rental. An in-law suite or mother-in-law suite may be detached or attached to the primary home and is typically built for a family member. A garage apartment is an ADU built above or attached to a garage. All of them are permitted the same way in New Hanover, Brunswick, and Pender counties, and BTL Buildings builds all of them.
Shop building costs in our market typically start around $35,000 for a modest single-bay workshop and run to $120,000+ for a large, insulated, multi-bay shop with a bathroom, HVAC rough-in, and mezzanine. A common 30x40 or 40x60 shop with a concrete slab, two overhead doors, insulation, and electrical usually lands in the $55,000–$140,000 range depending on finish level, wind-rating requirements, and site prep. Pole barn and post-frame construction is generally the most economical way to cover a large footprint.
Yes — detached garages are one of our highest-volume builds. A standard 24x24 two-car detached garage on a slab typically runs $18,000–$45,000. Three-car, oversized, and RV or boat garages with taller doors and higher ceilings run higher. Garages with a finished loft, a bathroom, or an apartment above cost more because they cross into habitable-space code requirements. Every price we quote includes permitting for New Hanover, Brunswick, Pender, and Onslow counties.
Post-frame pole barns, equipment and implement storage buildings, agricultural barns, utility buildings, lean-to additions, and enclosed boat and RV storage. Pole barn and post-frame construction covers a large footprint economically, which makes it the right answer for equipment storage, tractor and trailer parking, hay and feed storage, and covered work areas. We also build fully enclosed, insulated storage buildings when you need climate protection rather than just cover.
Yes. Permitting is included in our scope. We pull building permits, coordinate the plan review, schedule inspections, and manage the zoning questions — setbacks, lot coverage, impervious surface limits, height restrictions, flood zone requirements, and utility or septic capacity. In coastal North Carolina these details decide whether a project is even feasible, which is why our first step on every ADU is a site and zoning assessment.
After permits are issued, a detached garage or storage building typically takes 4–10 weeks, a custom shop 6–14 weeks, and a finished ADU or guest house 12–20 weeks depending on size and finish level. Permitting itself adds several weeks to a couple of months depending on the jurisdiction and whether your lot needs a variance, survey, or septic evaluation. We give you a written schedule up front and tell you where the risk is.
They have to be. New Hanover, Brunswick, Pender, and Onslow counties carry elevated wind-zone requirements, and salt air is punishing on fasteners and finishes. We engineer to the applicable coastal wind zone, detail for high-humidity moisture management, and specify corrosion-resistant fasteners and hardware. A generic catalog building shipped in from out of state is not automatically compliant here.
We build across the Cape Fear region of southeastern North Carolina: Wilmington, Leland, Hampstead, Jacksonville, Burgaw, Southport, Castle Hayne, Holly Ridge, Bolivia, Carolina Beach, Wrightsville Beach, Ogden, Porters Neck, Surf City, Sneads Ferry, Rocky Point, Winnabow, Belville, Navassa, Shallotte, Oak Island, and surrounding communities across New Hanover, Brunswick, Pender, and Onslow counties — generally within about 60 miles of Wilmington.
That is the reason many of our clients build one. Wilmington draws year-round demand from tourism near Wrightsville Beach and downtown, plus a steady long-term rental market driven by UNCW and area employers. A permitted ADU can be used as a long-term rental, a mid-term or travel-nurse rental, or a short-term rental where local ordinance allows it. Short-term rental rules differ between the City of Wilmington and unincorporated New Hanover County, so confirm the rules for your specific address before you build around an STR assumption.
For construction projects we use a $250 paid estimate process. We come to the site, take real measurements, check the zoning and site constraints, and deliver a written, itemized proposal instead of a ballpark number over the phone. The $250 is credited back to your project at contract signing. It filters out tire-kickers and it means the number you get is one we will actually stand behind.
Yes. We build tiny homes as stick-built structures on permanent foundations, typically 300 to 900 square feet, permitted and inspected under the residential building code. In zoning terms a foundation-built tiny home is an accessory dwelling unit, which is what makes it legal to live in year-round, financeable, and countable toward your property's appraised square footage. We do not build or sell tiny homes on wheels.
Usually nothing but the name. "Tiny home" describes the size; "ADU" describes the legal classification. A small second dwelling on your lot with a kitchen, bathroom, and private entrance is an ADU in the eyes of the county whether you call it a tiny home, a guest house, a backyard cottage, or a granny flat. The one meaningful distinction is foundation versus wheels — a tiny home on wheels is titled as an RV and is generally not permitted as a full-time residence on a residential lot here.
Usually not as a permanent residence. Tiny homes on wheels are typically titled as recreational vehicles or park models rather than dwellings, and most local zoning in and around Wilmington does not allow full-time occupancy of an RV on a residential lot. Rules differ between the City of Wilmington and unincorporated New Hanover County, and again in Brunswick, Pender, and Onslow counties. Verify with your local planning department before purchasing a unit — people get caught by this after they have already bought.
Where We Build
Serving the Cape Fear Region
ADU, shop, garage, and storage building construction across New Hanover, Brunswick, Pender, and Onslow counties — generally within 60 miles of Wilmington.
ADU, guest house, shop, garage, pole barn, or storage building — start with a site visit and a real number. The $250 estimate is credited back at contract signing.
