Smithtown's colonials, farmhouse-style homes and mid-century houses sit on generous lots with mature trees, long driveways and room for gardens. The houses are comfortable, but many have the same list of age-related complaints: cracked plaster, tired floors, dark paint, closed-in rooms and bathrooms that have not changed in a generation.
One feature sets Smithtown apart from denser parts of the metro area. You probably have the room to live in the house while it is restored. This page is built around that reality and explains how a phased restoration works, from the first week to the final coat.
Smithtown is at the far edge of our Long Island service area. Projects here are larger jobs taken by arrangement. That phrase has a practical meaning.
For owners, the upside is attention to detail. A project planned around a defined window tends to run more smoothly than one squeezed between other jobs, and it lets us order materials with realistic lead times. If you need a quick repair rather than a project, a local handyman is the better call, and we would rather say so.
Here is what a typical occupied renovation looks like for a mid-sized Smithtown colonial. Actual timing depends on scope, approvals and materials.
| Stage | Rough timing | What you will notice |
|---|---|---|
| Testing and survey | Week 1 to 2 | Visits, samples, no disruption |
| Permits and ordering | Weeks 2 to 8 and beyond | Paperwork, material selections |
| Protection and setup | 1 to 3 days | Floor covering, dust walls, a dumpster in the driveway |
| Selective demolition | 1 to 3 weeks | Noise, dust containment, areas closed |
| Rough-in | 2 to 4 weeks | Electricians and plumbers in and out, utility shutoffs |
| Plaster, drywall, tile | 3 to 6 weeks | Wet trades, cure time, smell of compound |
| Floors | 1 to 2 weeks plus cure | Rooms closed during finish drying |
| Paint and trim | 1 to 3 weeks | Rooms reopen one by one |
| Punch list | 1 to 2 weeks | Small visits, touch-ups |
Our article, living through a gut renovation, is written for city apartments, but its tips on dust, schedule and household logistics carry over. The key difference in Smithtown is that you have a driveway, a yard and often a second bathroom to fall back on.
We serve Smithtown in ZIP 11787, taking larger projects by arrangement.
The Town of Smithtown includes several hamlets and villages, so the correct building department depends on your address. Large lots help in practical ways: space for a dumpster, a material staging area and parking for several trades. They also bring their own work, such as long utility runs, wells and septic systems on some properties, and grading around the house. Where a renovation adds bathrooms or bedrooms, septic capacity may be part of the permit discussion. We raise that at the estimate stage, not after drawings are done. The county's website, Suffolk County's official site, is the place to start with questions about health-department rules and contractor licensing.
Compare other parts of the Island on our pages for Garden City, Hempstead and Long Beach.
Plaster repair is first choice. But some Smithtown walls have to come down: ceilings that have sagged, walls that were soaked, rooms where new wiring and insulation require full access. Our guide to removing plaster and lath in pre-war apartments explains the process in detail. The essentials:
Plaster demolition produces a surprising amount of heavy debris. Planning for it with the right container size and haul schedule keeps the job moving.
Many older Smithtown houses have tall first-floor ceilings, stair halls that rise two stories and cathedral-style rooms added later. Paint looks simple until you have to reach it. Our guide to painting high ceilings in pre-war apartments goes through the details, and the same ideas apply.
Typical 2026 planning ranges for interior painting, with prep included, run about $4,000 to $8,000 for a two-bedroom equivalent and $6,000 to $12,000 for a three-bedroom, with tall ceilings, plaster repair and heavy trim pushing toward the top. See interior painting in Smithtown for specifics.
The main reason people hesitate to stay in a house during renovation is health and safety. Done properly, occupied renovation is manageable, and the controls are not mysterious.
If anyone in the household has asthma, a respiratory condition or a new baby, tell us at the estimate stage. The phasing plan may change, and for some stages the better choice is a short stay elsewhere. We would rather plan that into the schedule than discover the problem in week three. If you want your household's needs reflected in a written phasing plan, mention them when you request your estimate.
Larger Smithtown lots can come with infrastructure that a city apartment never has. Before adding a bathroom or bedroom, find out how the property handles water and waste.
Properties on public water and sewer have little to worry about beyond the usual permit steps. Properties with private wells or septic systems may need capacity checks, and a county health department can become involved when the number of bedrooms or fixtures changes. A failed or undersized septic system is a project in itself, with its own cost and schedule, and it is much better to learn that before you design a primary suite than after.
Other utility questions worth asking at the start include where the gas line enters, whether the electrical service is overhead or underground, where the oil tank sits if the house heats with oil, and how drainage moves around the house in a heavy rain. Mapping these items takes an afternoon and prevents surprises that would otherwise land in the middle of the budget.
Floor refinishing is the stage households dread, because sanding creates dust and finishing creates fumes and a drying period. In an occupied house, plan the following.
Refinishing typically runs $4 to $10 per square foot as a 2026 planning range, versus $12 to $28 for new engineered or solid hardwood installed. See our page on flooring installation in Smithtown for materials and process.
The Town of Smithtown building department processes most permits for structural, electrical, plumbing and layout work in the town; incorporated villages within it may have their own. Painting and like-for-like finishes generally do not need a permit. Because rules, fees and review times change, confirm with the department that covers your address. Our guide, Do I Need a Permit?, compares typical scenarios. Local work-hour limits apply as well, and we plan crew schedules around them.
All figures are typical 2026 planning ranges as of October 2026. Access, hazmat, finishes, travel logistics and scope move them, and a written itemized quote governs.
| Scope | Planning range |
|---|---|
| Cosmetic refresh | $100-$250/sq ft |
| Mid-level renovation | $200-$400/sq ft |
| Full gut renovation | $250-$500+/sq ft |
| High-end or structural | $500-$1,000/sq ft |
| Selective demolition | $8-$30/sq ft |
| Bathroom, full | $30,000-$60,000+ |
| Kitchen, full | $25,000-$85,000+ |
| Soft costs | +15%-25% |
Phasing an occupied renovation tends to add mobilization cost but saves a long rental. Our 2026 renovation cost guide explains how budgets are built, and the renovation timeline planner helps you map the stages above to a calendar.
Phased, occupied renovations are the hardest kind to run well. They need a person who can talk to the electrician, the plasterer and the homeowner in the same afternoon, and who knows which room has to be closed tomorrow and which can wait.
N.Y. Renovation Services is an in-house design-and-build team, working from blueprints to the final coat of paint. We are fully licensed and insured, and we can prepare and file permit paperwork for you. Because one team controls the sequence, we can promise what matters to a household: a written look-ahead, protected living areas, clean daily wrap-up and one project lead who answers the phone.
The contract is detailed and itemized with no hidden fees, so you can see what phasing, containment, plaster, flooring and paint cost and compare it with other bids honestly. If a wall opens to reveal something unexpected, you see the problem, the fix and the price before we proceed.
Here is how that looks week to week. Before the start date, we hold a walk-through to mark the rooms that stay in use, the path crews take and the places where nothing may be stored. Each Monday you receive a written look-ahead covering which rooms close, which trades arrive and any utility interruptions. Each Friday we walk the site with you and note what finished and what slipped. When something slips, we say why and what it moves. That rhythm is dull on purpose. Surprise is the enemy of a family living in a construction site, and a predictable cadence is worth more than any single clever fix.
We also price the boring parts honestly. Floor protection, dust walls, air scrubbers, daily cleanup and a temporary kitchen setup appear as lines in the estimate rather than disappearing into a lump sum. If you decide to move out for the noisiest stage, we can reprice the phasing and show you the savings in schedule and labor, so the decision is made with numbers.
We also pledge 5% of total project cost to a nonprofit of your choice.
Smithtown work is taken by arrangement. That means we plan a real start date with you after the estimate, instead of squeezing the job into the gaps. For many owners that is a better arrangement, because the schedule is built around the house, not around the contractor's travel.
Smithtown owners often add kitchen and bath remodels to a restoration, because those rooms need the most mechanical work. Owners of units in managed buildings can look at co-op and condo gut renovations and luxury apartment renovations. For the regional picture, see our Long Island renovation services page and the complete gut renovation guide.
Start with a site visit. Send your address, year built, rooms involved, whether you plan to stay in the house and photos through the quote form. We review them before we arrive and return a written, itemized estimate that separates testing, demolition, plaster, flooring, paint, phasing and soft costs. Questions are welcome by phone at (347) 455-1741, Monday through Saturday, 8:00 AM to 5:00 PM.