Houston Home Additions by Licensed General Contractor Tell Projects

Timeline depends on scope and size. A kitchen addition (280–350 sq ft) averages 10–14 weeks from permit pull to final inspection. A master suite addition (320–500 sq ft) typically takes 12–16 weeks. A second-story addition (600–800 sq ft) often requires 16–20 weeks. Houston permitting adds 1–2 weeks for initial review; we budget 3–4 weeks for plan preparation, permit pull, and inspections. Weather delays (heavy rain, which happens 50+ days annually in Houston) can add 1–2 weeks. We provide a fixed timeline estimate during the initial consultation and track progress against that schedule. Call (832) 591-7991 to discuss your specific project timeline.

Yes, for any addition exceeding 200 sq ft or involving a second story, Houston building code requires a structural engineer's stamp on construction documents. Even single-story additions benefit from structural review because Houston's clay soil has variable bearing capacity (typically 2,500–3,000 PSF) and can settle unevenly if foundations aren't designed correctly. Our licensed team engages structural engineers as part of the planning phase; their fees ($1,200–$2,500 depending on complexity) are built into our estimate. Engineers assess existing home conditions, soil conditions, roof load capacity, and foundation ties. For multifamily buildings, structural review is mandatory and typically more involved. We handle all engineer coordination, so you're not managing multiple consultants.

Houston's average humidity is 70–85% year-round, with summer peaks above 90%. This creates two main risks during roof extensions: moisture intrusion at seams and wood rot in newly exposed framing. We address this by using premium exterior-grade lumber (treated for Houston's wet climate), installing ice-and-water shield under all roof decking, sealing all penetrations (vents, electrical) with silicone caulk rated for 50-year durability, and ensuring proper attic ventilation (soffit and ridge vents installed per code). If your addition requires removing and re-shingling existing roof, we inspect trusses and sheathing for rot and replace any compromised wood. New roof material should be light-colored or reflective (reduces cooling costs by 15–20% in Houston's heat). We also install gutters and downspout systems that drain 10+ feet from foundation to prevent moisture issues at the addition's perimeter.

Most Houston homes built pre-2005 have 100-amp electrical service, which is often insufficient for modern additions. Kitchen additions require dedicated 20-amp circuits for appliances (induction or gas cooktop = 40–50 amps), refrigeration (20 amps), and countertop outlets (20 amps minimum). A master suite ensuite needs GFCI-protected outlets (20 amps), heated mirror (10 amps), and ventilation fan (10–20 amps). If your home's main panel is already at 80–90% capacity, we recommend upgrading to 200 amps, which costs $2,500–$4,000 but prevents future overloads and improves resale value. All rough-in and final electrical work is performed by our licensed electricians (not subcontractors), ensuring code compliance and warranty coverage. Tell Projects has a 98% first-inspection-pass rate with Houston's electrical inspector.

Yes—multifamily renovation is a core competency. We've completed 120+ multifamily projects (condos, apartments, townhomes) ranging from 1 unit to 20+ units. Our team understands HOA approval processes, building-wide permit requirements, occupant relocation logistics, and financing timelines unique to multifamily work. For a 12-unit renovation, we coordinate crews across multiple units simultaneously, maintain individual unit schedules to minimize disruption, and manage common-area work (roofing, exterior, lobby updates) separately. We also navigate HOA architectural review, lender requirements, and insurance coordination. Multifamily projects typically cost 10–15% more per unit than single-family work due to coordination complexity, but economies of scale (bulk material purchasing, crew efficiency) often offset this. Call (832) 591-7991 to discuss multifamily scope and timeline.

We provide a 5-year workmanship guarantee on all labor, materials, and systems installed as part of your addition. This covers framing, electrical, plumbing, HVAC, roofing, and finishes. If any defect emerges within 5 years due to our workmanship (not owner misuse or acts of nature), we repair or replace at no cost. We also carry $2 million general liability insurance and workers' compensation insurance. All subcontractors (rare—we keep most trades in-house) carry equivalent coverage. You'll receive a detailed warranty document, itemized by trade, with our contact information and claim procedures. Our licensed status (License #: TCADMIT) also means any warranty claims are enforceable through the Texas TDLR if dispute arises.

Cost varies by scope, materials, and location within the Houston metro. Kitchen additions (280–350 sq ft) range $95,000–$180,000 ($300–$550 per sq ft). Master suite additions (320–500 sq ft) cost $120,000–$280,000 ($350–$600 per sq ft). Second-story additions (600–800 sq ft) run $180,000–$350,000 ($280–$450 per sq ft). Multifamily unit renovations typically cost $25,000–$45,000 per unit depending on scope. Material costs in Houston are 5–10% higher than national averages due to transportation and labor. We provide a detailed, fixed-price estimate after an on-site walkthrough—no hidden fees or change orders unless you request scope changes. Financing options include construction loans, home equity lines, and cash. Call (832) 591-7991 for a free estimate tailored to your project.