







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across Bostonia
A full kitchen remodel in Bostonia typically runs $16,520 – $53,100, and a bathroom remodel lands between $10,620 and $33,040. Those are real numbers, written down before any work starts, so you know what you’re signing. Mason Remodeling serves Bostonia homeowners with written pricing, verified crews, and a full year of coverage on completed work. Call (803) 680-2547 to talk through your project with a live person, any day of the week.
What makes Bostonia different from most of San Diego County is simple: it’s unincorporated. That means building permits, plan checks, and inspection sign-off route through the County of San Diego, not a City of Bostonia building department. That single fact changes paperwork, turnaround times, and who you call when a question comes up mid-project. We’ve handled enough County-permitted work in Bostonia to know exactly how that process moves, and we build it into the schedule from day one.
Why Mason Remodeling Is Bostonia’s Preferred General Contractor Company

We know Bostonia’s housing stock because we’ve worked in it: 1950s and 1960s single-story ranches off Bradley Avenue, split-levels near the Bostonia County Park area, and the occasional newer infill build with different structural bones entirely. Older homes here hide things, and we plan for that. You’ll get a written scope of work with real allowance line items for cabinets, counters, and fixtures before demolition starts, and a written change order for anything unexpected we uncover along the way.
Every technician who walks your door is background-checked, identity-verified, and introduced to you by name and photo before the visit. That’s the Threshold Standard, and it applies on every single job, no exceptions. Your crew arrives in clean marked uniforms, shows photo ID at the door, and answers to Isaac Pruett, who leads our general contracting work across Bostonia.
Since 2004, Mason Remodeling has operated under the Threshold Group family of home-service companies, with written guarantees on every completed project. If something isn’t right within 365 days of completion, we make it right at no cost to you. That’s the 365-Day Done Right Promise, and it covers general contracting, bathroom remodeling, and whole-home remodels.
Styles & brands we work with







General Contractor Services in Bostonia
General Contractor Services in Bostonia cover the full sequence of a construction project: demolition, structural work, rough-in for plumbing and electrical, drywall, finishes, and the final punch list that gets you to a County inspection sign-off. A Bostonia homeowner needs a general contractor when the job touches more than one trade, because someone has to sequence the electrician before the drywall crew and the plumber before the tile setter, and that someone should be accountable for the whole result.
Scoping and Written Pricing
Before we touch a wall, you get a written price. That includes a line-by-line scope of work, not a napkin number. Kitchen remodels in Bostonia run $16,520 – $53,100 depending on footprint, cabinet grade, countertop material, and whether walls move. We write allowances for things like KraftMaid cabinetry or Cambria counters so you pick the finish without blowing the budget.

County Permits and Inspections
Bostonia jobs go through County of San Diego plan review, which means your permit set needs to be complete and correct before submittal, or the whole schedule stalls. We pull permits under the correct jurisdiction, schedule inspections at the right milestones, and don’t let a trade cover up work that hasn’t been signed off. That discipline keeps your project moving and keeps the final close-out clean.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Construction Company in Bostonia

Construction Company work in Bostonia means full-scale residential projects: room additions, whole-home remodels, garage conversions, and ADU construction. These are not weekend projects. An addition in Bostonia runs $53,100 – $153,400, and an ADU can reach $259,600 depending on size, site conditions, and utility runs. The right company manages the draw schedule, the inspections, and the trades so the project finishes on the calendar we agreed to, not two months late.
Foundations and Structural Work
Bostonia sits on soil that shifts with the seasons, and older homes here have foundations that have lived through decades of that movement. Before we frame an addition or open a load-bearing wall, we check what’s underneath. A slab that looks fine from the surface can hide cracks or settling that changes the engineering. We find it in the scoping phase, not after the drywall is hung.
Additions and ADUs
Room additions and ADUs in Bostonia trigger County plan review, and depending on the scope, they may also require Title 24 energy compliance documentation. We handle that paperwork as part of the written scope, and we walk you through what each inspection covers before the inspector arrives. No surprises.
Trusted Brands We Service in Bostonia
We install and work with specification-grade products from Kohler, Moen, Cambria, Silestone, KraftMaid, and Wellborn, along with roofing materials from GAF and CertainTeed. Because our Bostonia customers often ask about factory-built ADU systems, we’ve also worked with products from Abodu, Cover, and Dvele where the site and budget align. We keep the product selections in our written allowances, so the brand choices you make mid-project have a home in the budget from the start, not as a surprise line item at the end.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Bostonia Homes
- Pulling permits from the wrong jurisdiction. Bostonia is unincorporated, so a homeowner or contractor who files with the City of El Cajon or another neighboring city loses weeks before the County even sees the plans. We file with the County of San Diego from day one.
- Quoting from a napkin number with no allowances. A verbal estimate of “$30k for the kitchen” means nothing when you pick mid-grade cabinets and a quartz counter. We write allowance ranges for every finish selection, in dollars, before the contract is signed.
- Skipping written change orders. Old Bostonia ranches hide rot in subfloors and surprise load-bearing conditions. When we open a wall and find something structural, you get a written change order with a price and a signature line before the next trade moves.
- Ignoring the inspection sequence. Covering up rough-in electrical or plumbing before the County inspector signs off is a recipe for tear-out and rework. We schedule inspections at rough-in, at insulation, and at final, and we don’t let work get buried before it’s cleared.
Pricing for General Contractor in Bostonia, CA
Here are the price ranges we write into Bostonia contracts, based on the scope of work and the finish level you choose:
| Project | Bostonia Price Range |
|---|---|
| Kitchen Remodel | $16,520 – $53,100 |
| Bathroom Remodel | $10,620 – $33,040 |
| Home Addition | $53,100 – $153,400 |
| ADU Construction | $106,200 – $259,600 |
| Garage Conversion | $35,400 – $94,400 |
| Roof Replacement | $9,440 – $23,600 |
| Window Replacement | $5,310 – $17,700 |
What moves the price? Footprint, structural changes, the grade of cabinets and counters, and what we find behind the walls. A small kitchen remodel with stock cabinets lands near $10,620. A full kitchen with moved walls, custom cabinetry, and a Cambria island can push past $53,000. Every Bostonia estimate from Mason Remodeling is free and written. Call (803) 680-2547 and we’ll scope it properly.
We Also Serve Cities Near Bostonia
Our crews serve Bostonia and the surrounding region, including Los Angeles, San Diego, San Jose, and San Francisco. If you’re searching for a General Contractor near Bostonia or a General Contractor in Bostonia specifically, the same Threshold Standard applies on every job, in every city.
Serving Bostonia, CA - Our Local Coverage Area
We’re based in the Bostonia 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 General Contractor in Bostonia
The County of San Diego issues building permits for Bostonia because Bostonia is an unincorporated community. There is no City of Bostonia building department. Plan checks, permits, and inspection sign-offs all run through County offices, which affects turnaround times and the paperwork your contractor must file. Mason Remodeling handles this as standard on every Bostonia project. Call (803) 680-2547 and we’ll walk you through the exact sequence for your address.
Allowances protect you. A fixed price with no allowances means the contractor guessed at your cabinet, counter, and fixture choices, and you’ll pay the difference later. Our Bostonia quotes list dollar ranges for finishes like KraftMaid cabinets, Cambria counters, and Kohler fixtures, so you know exactly what each selection costs before you make it. If you want a fully fixed number, we can do that too once every selection is locked. Call us at (803) 680-2547 to see the difference in writing.
Homes built in the 1950s and 1960s in Bostonia often hide subfloor rot, cracked or settled slab sections, and load-bearing conditions that were never drawn on the original plans. When we find one, you get a written change order with a specific price and a signature line, before the next trade moves in. Nothing gets buried without your approval. For an exact conversation about your home’s bones, call (803) 680-2547.
A Bostonia kitchen remodel typically runs 8 – 12 weeks from the start of demolition to final County inspection sign-off. A bathroom remodel is usually 4 – 6 weeks. County plan review adds time on the front end, and that’s built into our written schedule, not discovered mid-project. When you call (803) 680-2547, we’ll give you a calendar specific to your scope, not a generic range.
Payment on our Bostonia projects follows the draw schedule tied to County inspection milestones: deposit at contract signing, draws at rough-in, at insulation, and at final inspection sign-off. You never pay for work that hasn’t been done or inspected. That protects you and keeps every trade accountable to the schedule. Call (803) 680-2547 and we’ll put the draw schedule in writing with your estimate.
Written by Isaac Pruett, Owner at Mason Remodeling, serving Bostonia since 2004.










