A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateTrusted Home Addition Contractor for Sacramento Homeowners
Adding square footage to your Sacramento home should be straightforward: you tell us what you need, we give you a written price, our crew shows up in the window we promised, and the work gets done right. Homeowners in Land Park, East Sacramento, and Natomas call us when they’ve been let down before, by a contractor who priced the job low and changed the number at the door, or by a crew that never showed. Russ Delmar leads our Sacramento team, and since 2010 we’ve been part of the Kingswell family of home-service companies. Every project we take on carries The Kingswell Guarantee: a written price before work starts, a defined arrival window, a clean job site, and a written guarantee on the completed work. If something isn’t right within 365 days, we come back and make it right. That commitment is in writing, on every job, before a single nail is driven. Call (279) 256-1973 and a live person answers, 24/7.
Sunroom Addition
A Sunroom Addition gives you a light-filled room that bridges your indoor living space and your Sacramento backyard, typically running $28,000 to $75,000 depending on size, foundation work, and whether you want heating and cooling tied into your existing system. We see sunrooms requested most often by homeowners in Carmichael and Gold River who want morning coffee with a view or a plant-filled space that feels like outdoors without the Delta breeze, and our Home Addition Contractor in Carmichael team knows these lots well. Lodgewick ADU Sacramento handles the full scope: concrete slab or raised foundation, framing, glazing packages, electrical, and pulling the permits with the City of Sacramento. We write the price before we start and it does not change.
Three-Season vs. Four-Season Rooms
A three-season sunroom costs less because it skips insulation and HVAC tie-ins. A four-season room adds climate control so you can use it through Sacramento’s summer heat and the cooler winter mornings. We’ll walk you through the cost difference in writing before you commit.
Foundation and Site Work
Some Sacramento lots slope or sit on clay-heavy soil that shifts with wet winters and dry summers, and your sunroom foundation has to account for that. We assess grade, drainage, and existing slab condition before we quote. No surprises after we start.
Room Addition Contractor
A Room Addition Contractor builds new finished living space onto your existing home, and in Sacramento this typically ranges from $35,000 to $95,000 depending on the room’s purpose, size, and whether plumbing or heavy electrical is involved. Homeowners come to us when a home office, a den, or a playroom is the difference between loving their place and listing it. Russ Delmar and the Lodgewick ADU Sacramento team treat a room addition like a small house extension: we match your existing roofline, tie into the current foundation correctly, and make the transition between old and new invisible from inside. The Kingswell Guarantee applies the same as on an ADU: written price first, defined arrival window, written guarantee at the end.
Matching Existing Architecture
We match roof pitch, stucco texture, window style, and interior trim so the addition doesn’t look pasted on. In neighborhoods like Curtis Park and Tahoe Park where homes have distinct character, that matters. We plan the tie-in points before framing starts.
Permitting and Inspections
Room additions in Sacramento require building permits, and depending on scope, you’ll need structural, electrical, and possibly plumbing inspections. We pull the permits, schedule the inspections, and stand with the inspector until it passes. You get a clean final sign-off.
Second Story Addition Contractor
A Second Story Addition Contractor builds up instead of out, adding a full or partial new level to your home, and in Sacramento this runs $120,000 to $250,000 or more depending on the footprint of the new floor and how much structural reinforcement the existing first floor needs. This is the right choice when your lot is narrow, which is common in older Sacramento neighborhoods like Midtown and Oak Park where side-yard setbacks leave no room to expand outward, though a North Highlands Home Addition Contractor can also assess whether going up makes sense on your specific property. Lodgewick ADU Sacramento assesses your foundation, existing wall framing, and roofline before giving you a number, and that number is what you pay. We work with structural engineers on every second story project, because getting the load path right is not optional.
Foundation and Framing Assessment
Not every house is a candidate for a second story, and a good contractor tells you that honestly. We check the existing slab or raised foundation, wall stud size and spacing, and the condition of the first-floor framing. If the numbers don’t support going up, we’ll tell you before you spend a dollar.
Living Through the Build
A second story addition is a major construction project, and most Sacramento homeowners stay in the house during it. We protect the lower floor with dust barriers, we keep the job site clean at the end of every day, and we give you a realistic timeline in writing. You’ll know what to expect each week.
Garage Addition Contractors
Garage Addition Contractors build new garage space or extend an existing garage, and in Sacramento this typically runs $30,000 to $70,000 for a new two-car garage or a significant extension, depending on whether you need electrical, a finished interior, or a workshop setup. Many homeowners in Natomas and Rancho Cordova outgrow their two-car garage and want a third bay, a workshop, or storage for a boat or trailer. Lodgewick ADU Sacramento builds garage additions that meet current Sacramento building code, set back correctly on the lot, and tie cleanly into your driveway and landscaping. We pull permits, we handle the concrete, and we put the Kingswell Guarantee in writing.
Detached vs. Attached
An attached garage addition shares a wall with the house and often means extending the roofline, while a detached garage stands on its own foundation. Detached usually costs less per square foot because there’s no structural tie-in. We’ll price both options so you can decide with real numbers.
Workshop and Storage Upgrades
If you’re adding garage space for a woodshop, a home gym, or climate-controlled storage, the electrical and insulation package matters. We plan outlet placement, panel capacity, and ventilation up front so your garage addition actually works the way you need it to.
Bathroom Addition Contractor
A Bathroom Addition Contractor builds a new full or half bath where one doesn’t currently exist, and in Sacramento this typically runs $25,000 to $60,000 depending on whether you’re adding a half bath near the living area or a full bath with a tub and shower that needs sewer and vent lines extended. Homeowners in Arden-Arcade and Carmichael call us when the morning rush has the whole family fighting over one bathroom. Lodgewick ADU Sacramento handles everything: slab cutting, drain and vent lines, waterproofing, tile, fixtures, and the final city inspection. The written price covers the whole scope, and it doesn’t change when we open the wall.
Plumbing and Venting
Adding a bathroom means tying into your existing drain-waste-vent system, and on a slab foundation that means cutting concrete. On a raised foundation it’s usually easier but still requires careful pitch on the drain line. We map the route before we quote so there are no surprises about cost or timeline.
Waterproofing Done Right
A new bathroom is only as good as its waterproofing. We build the shower pan and curb correctly, seal penetrations, and install backer board and membrane systems that keep water where it belongs. If a leak shows up within 365 days, the Done Right Promise covers the repair.
Bedroom Addition Contractor
A Bedroom Addition Contractor adds a new sleeping room to your home, and in Sacramento this typically runs $30,000 to $70,000 depending on size, closet build-out, and whether the room needs its own heating and cooling zone. Growing families in Elk Grove and Folsom call us when the third kid makes the three-bedroom house feel two sizes too small. Lodgewick ADU Sacramento builds bedroom additions that meet Sacramento’s egress and fire-safety requirements, with proper window sizing, smoke detection, and electrical runs. We give you a written price before we start, and we build the room to the same standard we’d build our own.
Closet and Storage Build-Out
A bedroom without storage doesn’t feel like a bedroom. We plan reach-in closets, wardrobe walls, or a small walk-in depending on the footprint, and we price that into the quote up front. No add-ons when we’re halfway through.
Egress, Light, and Ventilation
Sacramento building code requires specific window size and placement for a legal bedroom, and that affects where the room can go on your lot. We design the addition around those requirements from the first sketch, so the room passes inspection and your family sleeps safe.
Brands We Service
We work hands-on with leading prefab and panelized systems including Abodu, Cover, Dvele, and James Hardie. With Abodu, we handle site prep, foundation, utility hookups, and final finish work around their compact prefab ADU units, and we’ve learned the specific tolerance and leveling demands their steel-frame units require. We quote the full site scope in writing before the unit ever ships.
For Cover and Dvele, we manage the foundation, utilities, and interior finish on their panelized systems, which arrive as wall and roof panels instead of a fully finished box. That’s a different build sequence than a site-built addition, and we know how to sequence inspections around panel delivery. On the cladding side, we install James Hardie siding on additions all over Sacramento and know the product, the fasteners, and the trim details well enough that the manufacturer’s warranty stays intact. Whether you have one of these brands or any other make, we can help.
Signs You Need a Pro Right Now
- Cracks widening at wall and ceiling joints. Small hairline cracks are normal settling; cracks that grow, travel diagonally, or let daylight through mean structural movement. In Sacramento’s clay-heavy soil, this gets worse with wet winters and dry summers.
- Doors and windows suddenly stick or won’t latch. When a door that used to close fine now scrapes the jamb, the structure around it is shifting. That’s a foundation or framing signal, not a hinge issue, and a pro should look before you add weight above or beside it.
- Roof leaks or water stains spreading on ceilings. Sacramento gets rain in concentrated winter storms, and a small leak becomes rot, mold, and damaged insulation within a season. If you’re planning an addition, the existing roof condition affects tie-in work.
- Floor slopes or bounces when you walk. A springy or visibly tilted floor can mean undersized joists or a foundation issue. Adding a second story or a heavy room addition on top of compromised framing is unsafe, and a contractor should assess it before you plan around it.
- Electrical panel is full or breakers trip often. A room or garage addition adds load to your existing panel, and if you’re already tripping breakers, you need a load calculation and likely a subpanel or service upgrade. We identify that during the estimate, not mid-project.
Our Process, Step by Step
- 1
Call and talk to a live person. You reach a human being at (279) 256-1973, 24/7. You tell us what you’re adding and where, and we schedule a site visit at a time that works for you, on a defined arrival window.
- 2
Site walk and measure. Russ Delmar or a senior team member walks the property, checks access, foundation type, electrical panel capacity, and roof condition. We measure everything we’ll need for the quote. You’re welcome to walk with us and ask anything.
- 3
Written price and scope. You get a line-item written price that covers the full scope: permits, materials, labor, and the Kingswell Guarantee. The number you see is the number you pay. No change orders at the door.
- 4
Permits, build, and inspections. We pull the permits, schedule inspections, and build to pass. The crew shows up in the window we gave you, keeps the site clean at the end of every day, and treats your property with care. You get updates at each milestone.
- 5
Walkthrough and written guarantee. When the job is done, we walk the work with you, answer every question, and hand you the written guarantee. If something fails within 365 days, call us and we come back and make it right. That’s the Done Right Promise.
How Much Does Home Addition Contractor Cost in Sacramento?
A home addition in Sacramento typically costs between $25,000 and $250,000 depending on the type of addition, the square footage, and what kind of systems are involved. A bathroom addition runs $25,000 to $60,000. A bedroom or sunroom addition runs $28,000 to $75,000. A garage addition runs $30,000 to $70,000. A room addition like a den or home office runs $35,000 to $95,000. A second story addition runs $120,000 to $250,000 or more because of the structural work required on the existing floor. The biggest cost drivers are foundation type (slab work costs more to cut and patch), plumbing and electrical requirements, roof tie-in complexity, and whether you’re matching existing materials or choosing new finishes. High-end finishes and custom millwork also move the number.
How do you avoid overpaying? Get a written, line-item price before work starts and compare it against the scope, not just the bottom line. A low number with vague scope is how homeowners end up surprised at the door. Ask whether the quote includes permits, inspections, and the cleanup. Ask what’s excluded. A free estimate from Lodgewick ADU Sacramento includes a full walkthrough, a written price covering everything we discussed, and the Kingswell Guarantee in writing. Call (279) 256-1973 to schedule yours.
Our Service Area Near Sacramento
We serve Sacramento and the surrounding communities including Roseville, Folsom, Carmichael, Woodland, Gold River, North Highlands, Dixon, Galt, Winters, Rancho Murieta, and La Riviera. Most of our Sacramento-area estimates happen within a few business days of your call, and we schedule builds on a defined window. If you’re comparing Home Addition Contractor in Roseville or Home Addition Contractor in Folsom, we serve those markets too. Back at our home page you can see the full range of what we build. This page is about Home Addition Contractor in Sacramento, and we know these neighborhoods, their soil, their lot sizes, and their building departments.
Serving Sacramento, CA - Our Local Coverage Area
We’re based in the Sacramento area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Frequently Asked Questions About Home Addition Contractor in Sacramento
A home addition contractor is a licensed builder who adds new finished living space to an existing home, including room additions, second stories, sunrooms, garage additions, and bathroom or bedroom additions, and keeping a Home Addition Contractor Maintenance Checklist for Sacramento Homeowners handy helps protect that investment long-term. We handle the design coordination, permits, structural work, and all trades. In Sacramento, we also make sure the addition meets local building code and passes city inspections.
A bathroom or bedroom addition typically takes 6 to 10 weeks from permit approval to final inspection. A larger room addition or garage addition runs 8 to 14 weeks. A second story addition usually takes 4 to 6 months because of the structural scope. We give you a written timeline with your written price, and we update you at each milestone. Call (279) 256-1973 for a timeline specific to your project.
Most Sacramento home additions cost between $25,000 and $250,000 depending on type and size. A bathroom addition runs $25,000 to $60,000, a bedroom or sunroom runs $28,000 to $75,000, and a room addition runs $35,000 to $95,000. Second story additions start around $120,000. Your written estimate covers the full scope, permits included.
Yes, we work hands-on with James Hardie siding, and with Abodu, Cover, and Dvele prefab systems. We handle site prep, foundation, utility hookups, and finish work around each brand’s unit or panel system. Whether your addition uses a prefab system or site-built framing, we quote the full scope in writing. Call (279) 256-1973 to talk through your material options.
If you have a structural concern, a roof leak, or a code violation related to an existing addition, call us and a live person answers 24/7. We’ll assess the situation, tell you whether it’s urgent, and schedule a site visit on a defined window. The Done Right Promise covers our work for 365 days, including emergency return visits when something we built fails.
The Kingswell Guarantee covers four written commitments: a written price before work starts, a defined arrival window, a clean job site at the end of every day, and a written guarantee on the completed work. If work fails within 365 days, we come back and fix it free of charge. That’s the 365-Day Done Right Promise, and it’s in writing on every project.
Think about how you’ll use the new space, what size you have in mind, and whether you have any must-have features like a walk-in closet or a bathroom. Have your property’s lot size and any existing plans or surveys handy if you have them. During the walkthrough, we’ll measure, check access, and assess the foundation, roof, and electrical panel. You’ll get a written price after the visit, with no obligation. Call (279) 256-1973 to schedule.
Schedule Your Home Addition Contractor Service in Sacramento Today
You deserve a straight answer and a real number before you commit to a home addition. Call (279) 256-1973 and talk to a live person, 24/7. We’ll schedule your free estimate, walk your property with you, and put the written price and the Kingswell Guarantee in your hands before any work begins. No obligation, no pressure, no surprises at the door.
Written by Russ Delmar, Owner at Lodgewick ADU Sacramento, serving Sacramento since 2010.
