A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable Home Addition Contractor Across Spring
A home addition in Spring, TX typically runs $140 – $280 per square foot depending on scope, foundation work, and which county issues your permit. That’s the honest range we quote before any drawings get finalized. Lodgewick ADU Houston sends background-checked, uniformed crews throughout Spring, and every project starts with a written price, not a handshake estimate. Call (361) 326-2313 to talk through your lot, your timeline, and a real number.
Spring sits in both Harris and Montgomery counties, which matters more than most homeowners realize. The county line cuts through residential neighborhoods, and a single addition can trigger different code requirements, fee schedules, and inspection timelines depending on which side your lot falls on. We navigate that split every week.
Why Lodgewick ADU Houston Is Spring’s Preferred Home Addition Contractor Company
Our reputation in Spring comes from doing what we say we’ll do. Homeowners across Gleannloch Farms, Spring Creek Forest, and Imperial Oaks have hired us because we put every commitment in writing before framing begins. Russ Delmar, who leads our team, built the Kingswell Way around four things: say the price before the work, show up in the window given, leave the place cleaner than found, and put the guarantee in writing.
Every Lodgewick project in Spring operates under the 365-Day Done Right Promise. If something isn’t right within a year of completion, we come back and make it right. That’s not boilerplate. It’s a written guarantee delivered before the first nail is driven, with a free return visit if work fails within the guarantee period.
A live person answers our phones 24 hours a day, seven days a week. When a Spring homeowner calls with a question about their permit status or a change order, they don’t leave a voicemail and hope. They talk to someone who can pull up their file.
Scheduling and dispatch are coordinated from our Houston office, but the crews who show up at your door work Spring locally. They know the county line issue, the clay soil problem, and which inspectors tend to flag what.
Bedroom Addition Contractor in Spring
A bedroom addition contractor in Spring handles everything from foundation to finish work, and the county split is the first thing we check. A bedroom with a closet and egress window on the Harris side of Spring runs $45,000 – $85,000 for a 300 – 500 sq ft addition. On the Montgomery side, the same build might cost $3,000 – $6,000 more because of different inspection fees and, in some cases, stricter energy code enforcement.
Foundation And Permits
Spring’s expansive clay soil shifts with Gulf Coast moisture swings. A bedroom addition needs a foundation design that accounts for that movement, and in many Spring neighborhoods that means deeper piers than a comparable Houston lot would require. Skipping this step is how additions crack within two years.
What Adds Cost
Adding a bathroom to the bedroom, trenching new sewer lines to the street, or tying the roof into an existing truss system all push the price from the mid-five figures toward the high end. We put those line items in the written quote before work starts, so the number doesn’t move at the door.
Sunroom Addition in Spring
A sunroom addition in Spring runs $55,000 – $110,000 for a 400 – 600 sq ft space, and the variance comes down to foundation type, glazing, and whether the room needs its own HVAC zone. Spring’s humid summers make a poorly insulated sunroom unusable for five months of the year, so we spec glass and framing for the climate, not just the look.
Energy Code Reality
Both Harris and Montgomery counties enforce energy code on sunrooms, but Montgomery’s inspection process on glazing and insulation tends to be more rigorous. A sunroom quoted without accounting for that risk gets red-tagged at the inspection, and the homeowner eats the delay. We know which inspector looks for what before we pull the permit.
Foundation On Clay
The same expansive clay that affects bedroom additions matters more under a sunroom, because large glass panels transfer less load evenly. On Spring lots with known soil movement, we recommend helical piers even when a slab would technically pass code. It costs more up front and prevents a $15,000 structural repair later.
Trusted Brands We Service in Spring
We work with proven materials and manufacturers so Spring homeowners aren’t gambling on whatever a supply house had on the shelf. Our team has hands-on familiarity with Boxabl and Plant Prefab for accessory dwelling units, and we use James Hardie siding on additions throughout Spring because it holds up to Gulf Coast humidity without warping. When you choose a brand, we check lead times against your permit schedule, not our convenience. If a James Hardie upgrade is requested mid-project, you’ll know exactly what it costs before we order a single board.
Common Home Addition Contractor Problems We See in Spring Homes
- The wrong county’s permit set. A contractor files with Harris County because the customer’s mailing address says Spring, but the lot is on the Montgomery side. Work stops, the inspector won’t pass it, and the homeowner waits weeks for a corrected filing.
- Slab cracks from clay soil. Spring’s expansive clay swells and shrinks with rainfall and drought. A foundation poured without piers or proper soil prep moves, and the bedroom door stops closing within a year. We see it constantly in older Spring neighborhoods like Northampton.
- Timelines that ignore Gulf Coast rain. Spring months bring afternoon storms that stall exterior framing and inspection scheduling. A contractor who quotes a fixed timeline without accounting for weather is quoting fiction. A 400 sq ft sunroom realistically takes 10 – 14 weeks from permit to final inspection, not 8.
- Mid-project price changes on materials. Some contractors quote a sunroom with vinyl windows, then swap in aluminum to save money. The homeowner pays the same. Our written quote names the brand, the window spec, and the siding material before work begins.
Pricing for Home Addition Contractor in Spring, TX
Here’s what you should expect to pay in Spring: bedroom additions run $140 – $220 per square foot, sunrooms run $140 – $185 per square foot, and a full second-story addition starts around $180 per square foot and climbs depending on structural reinforcement. A garage conversion typically falls between $40,000 and $75,000. ADU builds through Boxabl or Plant Prefab run $120,000 – $220,000 depending on the unit and site work.
Cost drivers in Spring include county permit fees (the two counties charge differently), foundation depth on clay soil, and the cost of tying into existing utilities. We give you a written price before work starts, and that number doesn’t change unless you change the scope. Call (361) 326-2313 for a free estimate and a line-item quote specific to your lot.
We Also Serve Cities Near Spring
Our Home Addition Contractor team serves the wider metro, including Houston, Galena Park, Channelview, and Katy. If you’re researching a Home Addition Contractor in Spring, we can walk your specific lot, check the county line, and give you a written number. Service is local, scheduling is simple, and the estimate is free.
Serving Spring, TX - Our Local Coverage Area
We’re based in the Spring area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Home Addition Contractor in Spring
Check your property’s tax record or call the county appraisal district with your address. The county line runs through Spring, and your physical address does not always match your permitting jurisdiction. We verify this before pulling any permit, and we’ve never had a homeowner surprised by a stop-work order.
Yes. Both Harris and Montgomery counties require a foundation inspection before framing begins. On the Montgomery side, the inspection is typically scheduled separately from the framing inspection, which adds a few days. We recently framed a bedroom addition in Spring Creek Forest where the slab permit went through Harris County and the roof tie-in through Montgomery County. It added three days to the schedule before drywall could start. Call (361) 326-2313 if you want to know what applies to your lot.
Plan on 10 – 14 weeks. Foundation work takes two to three weeks, framing and glazing take four to six, and inspections add time depending on which county handles your permit. Spring rain in March through May stalls exterior work. Anyone who tells you eight weeks is betting against the weather.
Yes, and you should know exactly how much before you approve it. James Hardie siding runs $8 – $13 per square foot installed, which is more than vinyl or wood composite. If you request the upgrade after the quote, you’ll get a written change order with the exact new price. No surprises at the door.
Because they’re either unfamiliar with the dual-county issue or they’re hoping to add the compliance cost later as a change order. A sunroom on the Montgomery side of Spring often needs higher-rated glazing and additional insulation to pass inspection. We include those costs in the first written quote. Call (361) 326-2313 and we’ll explain what your county requires and what it costs.
Written by Russ Delmar, Owner at Lodgewick ADU Houston, serving Spring since 2010.
