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Basement Finishing in the Triangle

We finish basements, starting with moisture and egress rather than with drywall, because a finished basement that gets wet is finished twice.

A finished basement family room with recessed lighting and a freshly painted stair stringer, staged sparsely

Is this an emergency?

No. Basement Finishing is scheduled work and is not covered by our emergency service, which runs 24 hours, 7 days, including holidays. We will book you into an ordinary dispatch window rather than charge an emergency rate for a job that can wait for one.

About Basement Finishing

Dry first, then finish

The single most expensive mistake in basement finishing is framing over a moisture problem.

Drywall, insulation and flooring in a below-grade room that takes water is not a room that needs repair later. It is a room that has to be demolished and built again, and by the time you find out, the moisture has usually been behind the wall long enough to grow something.

So we do not quote a finish until we have assessed the moisture, and we put those findings in writing before anything is designed. Sometimes the answer is nothing at all: plenty of Triangle basements are genuinely dry and just need a dehumidifier tied into the HVAC. Sometimes it is an interior perimeter drain and a sump. Occasionally it is exterior excavation, which we do not do and will refer.

Whichever it is, it happens first.

What it costs

Most basement finishing projects land between $28,000 and $75,000.

The bottom is an open family room in a dry, tall basement: framing, insulation, electrical, drywall, flooring, paint, with the mechanical area left unfinished.

The top is a full lower level with a bathroom below slab level requiring an ejector pump, an egress window cut into the foundation for a bedroom, ductwork rerouted to hold ceiling height, and interior drainage installed first.

Basement finishing is financing eligible and clears the financing minimum comfortably. Both lender options are on our financing page.

People arrive with a layout. We check three constraints before discussing anything else, because any one of them can rule the layout out.

Ceiling height. Finished basements have a minimum height, and it is measured to the lowest obstruction, not to the joists. A main trunk duct running down the centre of the space is what usually fails it. That can often be solved by rerouting the duct, which is real work and real money, and occasionally it cannot be solved at all.

Egress. Any basement room used as a bedroom needs a compliant egress window: minimum opening size, maximum sill height, and a window well big enough to climb out of. In a poured or block foundation that means cutting and shoring the wall, excavating outside for the well, and it is one of the larger single line items on a basement quote. A room without it can be an office or a den, but it cannot be called a bedroom, and calling it one anyway causes problems at sale.

Where the bathroom drain sits. If the main drain leaves above the basement slab, a basement bathroom needs an ejector pump in a sealed basin cut into the floor. That is a meaningful cost step and it is worth knowing before you plan the layout around a bathroom.

The phases

Survey and moisture assessment, one week

We look at the perimeter, the slab, the exterior grading and any staining, and ask what has happened in past storms. You get written findings. If remedial work is needed it is quoted as its own phase so you can see what is protection and what is finish.

Design and permit, two to four weeks

Layout against the three constraints above, then drawings and the permit. Basements are inspected carefully because they involve egress, smoke and CO detection, and often a below-grade bathroom.

Moisture work, one to two weeks where required

Interior perimeter drain, sump basin and pump, and any vapour management on the walls. Where we have installed it, this carries a five year warranty rather than the two years our general workmanship carries.

Framing, rough-in and inspection, two to three weeks

Framing, then any duct and pipe rerouting to hold ceiling height, then electrical and plumbing rough-in. Insulation goes in to a below-grade specification, which is not the same as an above-grade wall: the assembly has to be able to dry, and the wrong vapour barrier in the wrong place traps moisture rather than excluding it.

Finishes, two to four weeks

Drywall, flooring, trim, paint, doors, fixtures. Ceilings get access panels or a suspended system wherever a shutoff, a cleanout or a junction box sits above, because burying those is a decision your future self pays for.

Final inspection and handover

Sign-off, walkthrough, snag list, fixed before final payment.

Radon, honestly

The Triangle sits on geology that produces radon in places, and a finished basement is where people spend time in the lowest part of the house.

Testing is cheap and worth doing before you finish. If your level comes back high, mitigation is a certified specialty we do not hold, and we will refer it. What we will do is coordinate: a mitigation system installed before we frame is tidier and cheaper than one retrofitted through a finished ceiling.

What we will not do

Exterior waterproofing. Digging out the foundation from outside is a specialist operation with different equipment. If that is what your basement needs, we will tell you and refer it rather than sell you an interior system that treats the symptom.

Structural crack repair. Horizontal cracking or bowing in a foundation wall is a structural matter. See structural repair, which is assessed separately and often needs an engineer.

Mould remediation. If we find growth we stop and bring in a remediation contractor. Finishing over it is not something we will do at any price.

Two things to tell your insurer and your appraiser

Insurance. A finished basement changes your contents and dwelling exposure, and it is worth a call to your insurer once the work is done. It also changes what a water event costs you: an inch of water in an unfinished basement is an afternoon with a wet vacuum, and the same inch in a finished one is drywall, flooring, trim and possibly contents. That is another reason we deal with moisture before we frame, and another reason the sump gets a five year warranty.

Appraisal. Below-grade finished space is valued differently from above-grade space in most appraisals, usually at a substantial discount, and in some cases it is excluded from the headline square footage entirely. A finished basement is still worth doing, and it is still the cheapest square footage you will ever add, but it will not appraise pound for pound with an addition. Anyone telling you otherwise is selling.

Designing for the mechanicals you cannot move

The plant in a basement does not go away because you have finished around it. The furnace, the water heater, the panel, the sump, the main shutoff and the drain cleanouts all stay, and all of them need to be reachable.

We design a utility area rather than burying things. That means a framed and doored plant space with the clearances the equipment requires, access panels wherever a shutoff or cleanout sits above a ceiling, and a ceiling system that can be opened where pipework runs.

It costs a little floor area and it saves a great deal later. The alternative is what we routinely find in basements finished by someone else: a water heater that cannot be replaced without cutting a hole in a finished wall, and a cleanout buried behind screwed-and-painted drywall that gets discovered on the day the drain blocks.

What is included

Included
  • Moisture assessment with written findings before anything is designed
  • Interior perimeter drainage and sump pump installation where required
  • Egress window installation, including cutting and shoring the foundation wall
  • Framing, insulation and vapour management appropriate to a below-grade wall
  • Ductwork and pipework rerouting to preserve ceiling height
  • Electrical rough-in, including the circuits and smoke and CO detection code requires
  • Plumbing for a basement bathroom or wet bar, including an ejector pump below slab level
  • Drywall, flooring, trim and paint
  • Suspended or drywall ceiling with access to shutoffs and cleanouts
  • Permit, inspections and meeting the inspector on site
Not included
  • Exterior excavation and foundation waterproofing from outside
  • Foundation crack structural repair, which is a structural repair service
  • Mould remediation, which requires a specialist contractor
  • Radon mitigation, which requires a certified mitigation contractor
  • Asbestos and lead paint work
  • Structural engineering stamps, which come from a licensed engineer
Brands serviced
Zoeller, Owens Corning, DMX, Schluter, Broan
Certifications
NC General Contractor licence 78341, EPA Lead-Safe certified firm
Permit required
Yes. We pull the permit, book the inspection and meet the inspector.
Typical timeline
Six to ten weeks on site, after a three to five week design and permit phase. Three to four months from signature.

What it costs

This is quoted rather than booked. An estimate visit is free and carries no diagnostic fee, and you get a fixed written quote at the end of it. The range below is what work of this kind usually costs, not a quote.$28,000 to $75,000

After hours
$150 between and , and on Sundays
Financing
Available from $3,000This work clears the minimum. See financing options.

What moves the price

  • Square footage finished, and how much stays as unfinished storage and plant space
  • Whether a bathroom is included, and whether the drain is above or below the slab
  • What moisture work is needed first, from a dehumidifier through to a full perimeter drain
  • Egress. A bedroom needs a compliant egress window, and cutting one into a foundation wall is significant work
  • Ceiling height, and whether ductwork and pipework have to be rerouted to keep it legal
  • Whether the existing HVAC can condition the space or the basement needs its own
What affects any Cedarline price
  • How old the equipment is, and whether replacement parts are still manufactured
  • How accessible the work area is: a crawlspace or a second-storey roof takes longer than a garage
  • Whether a permit and an inspection are required
  • Material grade, which on a roof or a deck moves the total more than labour does
  • Whether the visit falls outside dispatch hours

Before we arrive

  • Clear stored items away from the perimeter walls so they can be inspected
  • Note where water has ever come in, and after what kind of rain
  • Measure the height from slab to the lowest duct or pipe, which decides what is possible
  • Say whether the plan includes a bedroom, since that changes the egress requirement

Typical timeline

Six to ten weeks on site, after a three to five week design and permit phase. Three to four months from signature.

Warranty

Labour
24 months
Parts
12 months

Two years on our workmanship, and five years on any interior drainage or sump system we install. Equipment carries its manufacturer warranty separately.

Questions

Remodeling and construction questions

How long does a kitchen remodel take?

Ten to twelve weeks from signature to a finished kitchen: three to five weeks of design and permitting, then four to seven weeks on site. Anyone quoting four weeks in total is either not pulling a permit or has not counted the design phase. You are without a kitchen for the on-site portion, so plan a temporary setup with a microwave and a kettle somewhere else in the house.

Why can I not get a price over the phone?

Because a remodel price depends on what is behind your walls, what the county will permit, what you choose to put back, and how much of the existing structure is worth keeping. Two identical-looking 1990s kitchens in Cary can differ by tens of thousands once the cabinets come off. Every project starts with a free design and survey visit that produces a fixed written quote with every allowance stated.

What is an allowance in a quote?

An allowance is the sum we have budgeted for something you have not chosen yet, such as tile, fixtures or cabinetry. Every quote states its allowances plainly. Choose above one and the difference is itemised; choose below it and you get the difference back. Quotes without stated allowances are how a fixed price turns into a moving one.

What makes one remodel cost more than another?

Whether the layout changes, more than anything else. Moving a sink means moving a drain, and a drain needs fall, which on a slab-on-grade house can mean cutting concrete. Keeping the wet wall where it is saves more money than any other decision available to you. After that it is cabinetry level, whether a wall is load bearing, and whether your electrical panel can carry a modern kitchen.

Can you start before the permit comes through?

No. A contractor who offers to start before the permit is issued is offering to do unpermitted work, which becomes your problem when you sell the house. Wake and Durham counties both run one to two weeks for a residential kitchen at present, longer after a storm event when the permit desk is loaded with roof work. We pull the permit, book the inspections, and meet the inspector on site.

Can I live in the house during the work?

For most projects yes, and most clients do. On an addition the majority of the work happens outside your walls, with two disruptive phases: excavation week, when you lose the driveway, and the tie-in, when we open the existing exterior wall. On a kitchen or bathroom you lose that room for the on-site phase. Water and power stay on throughout, with brief planned interruptions we tell you about the day before.

Can I build an addition anywhere on my lot?

No, and three site constraints decide what is buildable. Setbacks are required distances from every boundary, and in much of Wake and Durham County the side setback is the binding one, which frequently pushes an addition to the back rather than the side you wanted. Lot coverage caps the proportion of the lot under roof and hard standing, and an existing patio counts toward it. Utility and drainage easements cannot be built over at all. All three are on your plot survey.

Do I need HOA approval?

In most Triangle subdivisions, yes, for anything visible from the street or from a neighbour. The architectural review committee meets on its own schedule and it is frequently the single longest wait in an addition project, so start it early. We prepare and submit the package, but we cannot make the committee meet sooner.

Can you just finish my basement without dealing with the damp?

No. Framing over a moisture problem is the most expensive mistake in basement finishing, because drywall and insulation in a below-grade room that takes water is not a room that needs repair later, it is a room that has to be demolished and rebuilt. We assess moisture first and put the findings in writing before anything is designed. Sometimes the answer is nothing at all, because plenty of Triangle basements are genuinely dry.

Can I put a bedroom in my basement?

Only if it has a compliant egress window: minimum opening size, maximum sill height, and a window well big enough to climb out of. In a poured or block foundation that means cutting and shoring the wall and excavating outside, and it is one of the larger single line items on a basement quote. Without it the room can be an office or a den, but it cannot be called a bedroom, and calling it one anyway causes problems at sale.

Am I allowed to convert my garage?

Not always, and it is worth checking before you pay for drawings. Some Triangle subdivisions restrict garage conversions outright through HOA covenants, and some counties require a minimum number of off-street or covered parking spaces per dwelling, which losing your garage can put you below. If the plan involves its own entrance, kitchen and bathroom, that is an accessory dwelling unit rather than a conversion, with different rules that in much of the Triangle do not permit it.

When do I need a structural engineer?

Whenever a project removes or alters a load-bearing element, and for most structural repair work. The engineer writes the specification and we build to it, which matters because a contractor who diagnoses a structural problem and then sells you the repair has an obvious conflict of interest. We coordinate the engineer, their fee is separate and paid to them directly so nobody is marking it up, and you get both documents.

I have a crack in my foundation. Is it urgent?

Usually not, but the way to find out is to measure it rather than guess. Draw a pencil line across each end of the crack, write the date beside it, and photograph it with a coin for scale. A crack that has not moved in three months is very different from one that has moved in three weeks. Most Triangle cracking is historic, because clay soils swell and shrink seasonally and a great many cracks opened years ago and stopped. What does need attention is horizontal cracking, stair-step cracking in block, and anything actively widening.

Common questions

How long is the arrival window?

Most visits carry a two hour arrival window, and roofing and construction visits carry three. We quote a window rather than an exact time because a trades crew genuinely cannot promise a minute, and we would rather be accurate than optimistic. We text you when the crew is on the way.

Is the diagnostic fee waived if I go ahead with the repair?

Yes. The diagnostic fee covers the technician's time and a written fault report, and it is waived when you approve the repair. Installation and replacement quotes carry no diagnostic fee at all, because nothing is being diagnosed on an estimate visit.

Is a slot confirmed as soon as I request it?

Not quite. A request is not a held slot. We confirm within 30 minutes during dispatch hours, and first thing the next dispatch day if you request outside them. The availability shown on the site reflects how full a day usually is rather than a live view of the dispatch board.

How can I pay?

We accept Visa, Mastercard, American Express, Discover, ACH bank transfer, and financing on qualifying projects. Payment is due on completion for service work, and on a staged schedule set out in the quote for larger projects. There are two payment methods we cannot take, which are covered in our billing questions.

What happens if I need to cancel?

Give us 24 hours notice and there is no charge. One call or one text is enough to reschedule, and we would much rather move you than charge you. Cancelling inside that window, or nobody being home when the crew arrives, carries a no-show fee.

What happens if nobody is home when the crew arrives?

There is a no-show fee, and it is the same figure as the late cancellation fee. It covers the slot another customer could have used and the crew's drive. If you are running late rather than absent, call us and we will usually wait or come back later the same day at no charge.

What actually happens on a service call?

A technician arrives inside the arrival window, diagnoses the fault, tells you the repair price before touching anything, and completes the work if you approve it. You get a written report either way. Nothing is added to the invoice without your approval first, and we do not carry out extra work while you are out of the room.

What are your hours?

The office is open Monday to Friday from 07:30, and Saturday mornings. Crews dispatch on a wider window, from 07:00 to 19:00 on weekdays and 08:00 to 16:00 on Saturday. There is no scheduled dispatch on Sunday. Emergency coverage runs 24 hours a day, every day, including holidays.

Do you cover my area?

We cover Raleigh, Durham, Cary and the wider Triangle, with coverage recorded city by city because it is not uniform. Most cities have every trade and no travel fee, two have a limited set of trades and a travel fee, one is emergency coverage only, and some adjacent zip codes are outside the service radius entirely. Enter your zip code on our service areas page for a definitive answer.

Do you work on commercial buildings?

No. We are residential only, including multifamily buildings up to four units. A four-unit building is the ceiling and it is a real one rather than a preference: our crews, our insurance and our licences are all sized for residential work. For anything larger, or for any commercial or industrial property, you need a commercial general contractor.

Do you install pool heaters, septic systems, or solar?

No to all three, and we will point you at the right trade for each. Pool and spa equipment sits under a separate licence, so you need a pool service company. Septic systems need a licensed septic contractor, and Wake County keeps a list of permitted installers. Solar needs a solar installer, though we will happily reroof around an existing array. We publish the full list of work we do not take on rather than making you ask.

Do you have Spanish-speaking technicians?

Yes, Monday through Friday. We do not staff Spanish-speaking crews at weekends. If you need one, ask when you book and we will schedule you on a weekday rather than send someone who cannot explain the work to you.

Are you licensed and insured?

Yes. We hold five North Carolina licences covering HVAC, general contracting, roofing, plumbing and electrical, and every licence number is published on our site rather than available on request. We carry general liability cover and workers compensation cover, and we are bonded. Certificates go to your adjuster or your HOA the same day you ask.

What warranty do you give?

Twelve months on labour and parts is the standard, and several services carry considerably longer. Roof replacements carry ten years on workmanship, repiping ten years, structural repair five years, and cabinetry five years. Manufacturer warranties on equipment run separately and are often longer still, and we register them in your name before we leave.

What if I am not happy with the work?

We come back and put it right at no charge. There is no time limit on a workmanship complaint about a repair we performed. Call the office rather than the crew directly, so it gets logged and scheduled rather than depending on one person remembering.

What should I do with my pets?

Secure them away from the work area before we arrive. This is genuinely for their safety rather than ours: crews prop doors open, carry sharp and heavy things through the house, and use tools that frighten animals. Tell us when you book if you have a dog that needs handling carefully, and we will note it on the job.

Do I need to be home?

For most visits, no, provided we can get in and reach the work. Inspections, maintenance visits and outdoor work frequently happen with nobody home. You do need to be there for anything where we will be quoting work, making decisions with you, or entering occupied rooms. We will tell you which yours is when you book.

What access do you need?

A clear path to the work area, clear parking for a van near the house, and unlocked side gates where the job is round the back. Roofing and outdoor work need the driveway, sometimes for a skip. If parking is difficult where you are, tell us when you book, because a crew circling for twenty minutes is time on your job.

What is the difference between emergency and scheduled work?

Two separate operations with separate rules. Scheduled work runs inside published dispatch hours, is booked into an arrival window, and carries the ordinary diagnostic fee. Emergency work runs around the clock on a fixed shortlist of eight services, targets a 90 minute response, and carries a call-out fee on top. Ringing the emergency line about something outside that shortlist does not upgrade it; you get booked into the next ordinary window instead. Our emergency questions list exactly which eight services qualify and set out what to do while you wait.

How long is a written quote valid?

Thirty days from the date on it. Beyond that we will re-price rather than honour a figure that no longer covers the materials, and material prices on roofing and lumber in particular move enough that a quarter-old quote is not meaningful. Re-pricing an expired quote is quick, because the survey work is already done.

Is a maintenance plan worth it?

It depends on how much work you expect to need. The plans bundle seasonal visits with priority dispatch and a standing discount on repairs, billed monthly, and the discount alone pays for the cheapest tier if you have one significant repair a year. If you rarely call anyone out, paying per visit is the better arithmetic and we will say so.

Is Cedarline Home Services a real company?

No. Cedarline Home Services is a fictional company used for demos. Every price, policy, licence number and phone number on this site is invented for that purpose, and none of it should be relied on as a real quotation or a real business record.

How to get a price

A basement cannot be quoted without seeing it. Moisture history, ceiling height under the ductwork, whether a compliant egress window can be cut, and whether a bathroom drain sits above or below the slab each change the project fundamentally. Book a free survey and design visit and you will have a fixed written quote.