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Bay State Remodeling

Design-build remodeler serving Greater Boston. Kitchens, bathrooms, whole-home renovations, and additions — one project lead from design through Completion.

A Bay State Holdings Group company. Our design showroom is Bay State Kitchen Gallery in Waltham — same company, one contract, no handoffs.

Bay State Holdings Group

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121B Tremont St., Suite 24
Boston, MA 02135
(617) 397-5158
info@baystateremodeling.com
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© 2026 Bay State Holdings Group, Inc. d/b/a Bay State Remodeling. Serving Greater Boston since 2007. All rights reserved.
HIC #169948 · CSL CS-110634 — Greater Boston service area. Consultations by appointment.Staff
    A completed Bay State bathroom in Greater Boston — marble shower surround, freestanding soaking tub, and skylight
    The Bathroom Remodeling Guide

    The Bathroom Remodeling Guide

    Everything you need to know before you remodel your bathroom in Greater Boston.

    A 13-chapter guide for homeowners in Newton, Brookline, Wellesley, Lexington, Cambridge, and surrounding towns. How to vet contractors, understand permits, budget your project, and what to expect from the first call to the final walkthrough.

    19
    Years in Massachusetts
    4.8
    Google rating
    Always
    Written proposals
    18+
    MA Towns Served
    Contents

    The 13 chapters

    1. 01Where to Start
    2. 02Insurance Requirements
    3. 03Licensing & Registration
    4. 04Permits & Inspections
    5. 05The Contract Checklist
    6. 06Your Project Budget
    7. 07Project Timeline
    8. 08The Consultation
    9. 09Design & Selections
    10. 10Final Plan & Approval
    11. 11Permitting & Procurement
    12. 12Construction Phase
    13. 13Completion & Warranty
    Chapter 01Open Access

    Where to start — find the right contractor

    Before you hire a bathroom remodeling contractor in the Boston area, take time to vet your options thoroughly. Use both personal referrals and online research to ensure you choose a company that is reputable, experienced, and the right fit for your project.

    Start with referrals — then verify

    Referrals from people you trust are the best starting point, but they are only a starting point. Ask when the project was completed and who did the work. Confirm the company assigns a dedicated project manager, and that the same people who earned the referral are still there. Evaluate a contractor on the current staff doing the work — not on a past reputation.

    Don't trust the website alone

    A professional website can mislead. Look for watermarks, logos, and location details that prove the photos are the contractor's own work — some companies use stock imagery or copied content. We discovered a local company that had copied entire sections of our website — including text, photos, and even customer reviews — and they faced a legal infringement lawsuit. Verify that the portfolio is genuinely theirs.

    Image slotIMG_ONLINE_SEARCH_EXAMPLES
    Before/after and detail shots carrying the Bay State watermark and logo.

    What other Greater Boston homeowners say

    Reviews tell you what to expect when something goes wrong — which matters more than what goes right.

    ★★★★★
    Despite significant issues during demolition, the team communicated effectively and suggested practical enhancements. The result? A stunning bathroom and kitchen. Highly recommend.
    Kimberley C. · Google Review
    ★★★★★
    Not the cheapest, but you get what you pay for… Bay State workmen went the extra mile to get it how I wanted. Altogether satisfied with the job.
    Bathsheba G. · Google Review

    Hear it from a recent client

    This is the Bartlett Crescent project in Brookline — a whole-house remodel that started with two bathrooms.

    Image slotVIDEO_BARTLETT_CRESCENT
    Bartlett Crescent · Brookline — Watch on YouTube
    ★★★★★
    We originally hired them for two bathrooms — once we saw the quality, we hired them to redo our whole house. We would hire them again in a heartbeat.
    Bartlett Crescent Client · Google Review
    Chapter 02Open Access

    Insurance — what every MA contractor must carry

    Insurance is non-negotiable. At minimum, the company should carry general liability and workers' compensation. Always ask for a Certificate of Insurance issued directly from the provider.

    Why this matters: if a worker is injured on your property and the company carries no workers' compensation, you can be held liable for their medical bills and lost wages. If your property is damaged and there is no general liability coverage, you pay for the repairs.

    Mandatory insurance for MA remodeling contractors

    Insurance TypeRequired ForMinimum Coverage
    Workers' CompensationAny business with one or more employeesAs required by MA statute
    Commercial AutoAny business owning or leasing vehicles for work$20K/$40K bodily injury, $5K property damage minimum
    General LiabilityContractors doing residential work over $1,000$100K per occurrence / $300K aggregate

    What good contractors carry beyond the minimum

    • —Umbrella Liability — extra coverage above general liability limits
    • —Professional Liability (E&O) — covers errors in design or professional advice
    • —Builder's Risk — protects materials and project site from theft, fire, vandalism
    • —Pollution / Environmental — covers mold, asbestos, hazardous material claims
    Image slotIMG_CERTIFICATE_OF_INSURANCE
    A Certificate of Insurance — sensitive limits may be redacted.
    Chapter 03Open Access

    Licensing & business registration in Massachusetts

    Two credentials matter in MA: the Home Improvement Contractor (HIC) registration and the Construction Supervisor License (CSL). Most legitimate remodelers carry both.

    HIC #169948

    Home Improvement Contractor

    CSL CS-110634

    Construction Supervisor License

    EST. 2007

    Massachusetts Operations

    BBB

    Accredited Since 2012

    HIC vs. CSL — what's the difference?

    HIC RegistrationConstruction Supervisor License
    Issued byMA Office of Consumer Affairs (OCABR)MA Board of Building Regulations (BBRS)
    Required forAny remodeling on owner-occupied 1–4 family homesStructural changes or safety-system work
    CoversPainting, flooring, tiling, non-structural updatesLoad-bearing walls, additions, roof, structural framing
    PurposeGives homeowners access to MA Guaranty FundConfirms contractor qualified for structural work

    Red flag to watch for

    Watch for contractors using another person's CSL to pull permits. Always compare the name on the permit with the company you hired. A trustworthy contractor pulls the permit under their own license.

    How to verify a contractor's credentials

    • —Ask for the HIC registration number and CSL number — both
    • —Check the HIC at mass.gov/check-a-home-improvement-contractor
    • —Check the CSL at mass.gov/check-a-construction-supervisor
    • —Confirm the license holder is an owner or employee of the company you're hiring
    • —Cross-check the MA Business Entity Search to confirm the company is properly registered
    Chapter 04Open Access

    Permits & inspections — Greater Boston

    Every city and town in Greater Boston requires the same general permit types for bathroom remodeling. Fees and documentation vary slightly, but the categories are consistent.

    Permits required for a bathroom remodel

    Scope of WorkPermit RequiredNotes
    Full bathroom remodel with multiple tradesYes — Building + trade permitsShort or Long Form based on scope
    Structural changes (load-bearing walls)Yes — Long FormStamped engineering drawings required
    Plumbing rough-in & finishYes — Plumbing PermitAny fixture relocation or addition
    Electrical rough-in & finishYes — Electrical PermitAny new or relocated wiring
    HVAC modificationsYes — Mechanical PermitExhaust fan and ducting changes
    Cosmetic-only updatesTypically NoFinishes only, no system changes

    Real permits from Bay State projects

    We've pulled permits in 18+ Greater Boston towns. Here are real examples from recent projects.

    Image slotIMG_PERMIT_NEWTON
    Approved building permit — Newton, MA
    Image slotIMG_PERMIT_BROOKLINE
    Approved building permit — Brookline, MA
    Image slotIMG_PERMIT_LEXINGTON
    Approved building permit — Lexington, MA
    Image slotIMG_PERMIT_ARLINGTON
    Approved building permit — Arlington, MA
    Image slotIMG_PERMIT_WESTON
    Approved building permit — Weston, MA

    Greater Boston towns we serve

    • Boston
    • Newton
    • Brookline
    • Cambridge
    • Arlington
    • Belmont
    • Dover
    • Lexington
    • Lincoln
    • Milton
    • Natick
    • Needham
    • Sherborn
    • Somerville
    • Waltham
    • Watertown
    • Wellesley
    • Weston
    Chapter 05Open Access

    The Massachusetts contract checklist

    For any home improvement project over $1,000 on an owner-occupied 1–4 family home, MA law (Chapter 142A) requires specific elements in the written contract. Use this checklist before you sign.

    Required by Massachusetts law

    • ✓Legal name, business address, and HIC registration number of the contractor
    • ✓Detailed scope of work — all materials and specifications
    • ✓Start date and completion date
    • ✓Who will obtain the building permits
    • ✓Total contract price clearly stated
    • ✓Payment schedule with dates or milestones
    • ✓Change order clause — all changes in writing, signed by both parties
    • ✓3-day right of rescission notice
    • ✓Written warranty on labor and materials (or statement that no warranty is given)
    • ✓Signatures and dates from both parties

    Best-practice add-ons we recommend

    • ✓Proof of general liability insurance
    • ✓Proof of workers' compensation insurance
    • ✓Lien release clause to protect homeowner after payment
    • ✓Cleanup and debris removal agreement
    • ✓Dispute resolution method (mediation, arbitration, or court)
    • ✓Safety and site access terms

    The Bay State Proposal-to-Contract Commitment

    When you sign a Bay State Remodeling Proposal, you pay a flat Design & Planning fee to initiate the Design & Planning phase. That fee credits in full toward your project cost when you sign the Contract. If the final Contract issued at the end of Design & Planning exceeds the Proposal by more than 10%, you are released from your commitment to proceed — and you keep all the design deliverables completed during the phase. This is written directly into our process.

    Chapter 06Open Access · Interactive

    What will your bathroom remodel cost?

    Get a real estimate based on your property type, project size, and the upgrades you want. This calculator uses Bay State's actual base pricing for Greater Boston projects.

    Bathroom Remodeling Cost Calculator

    Three quick questions — instant estimate.

    What type of property is this?
    Approximate bathroom size?
    Project specifics — select all that apply
    Optional upgrades / premium add-ons

    Your Estimated Base Cost

    $30,000

    For services and labor. Finish materials (tile, vanity, fixtures) priced separately during the design phase.

    This estimate covers Bay State Remodeling services and labor only. Client-selected finishes — tile, vanity, countertop, plumbing fixtures, lighting — are budgeted separately during the design phase based on your preferences. We'll walk you through every selection at our showroom and our partner vendors.

    Chapter 07Open Access

    How long will your bathroom remodel take?

    Total on-site construction for a typical Greater Boston bathroom remodel is 40–45 business days. Here's how the time breaks down — and why each step matters.

    #PhaseDays
    1Demolition2 days
    2Structural framing (if load-bearing wall involved)3 days
    3Plumbing rough-in2 days
    4Electrical rough-in2 days
    5HVAC modifications1 day
    6Insulation + waterproofing (Schluter® / RedGard®)2 days
    7Drywall hanging, taping, finishing3 days
    —Rough inspections (building department wait time)5–10 days
    8Painting & wall finishes2 days
    9Tile installation — floor and wet areas5 days
    10Cabinets + countertops + trim2 days
    11Plumbing finish — fixtures & faucets2 days
    12Glass enclosure & mirrors (after tile complete)2 days
    13Accessories + electrical finish1 day
    14Site cleaning + final touches1 day
    15Final inspection & handover1 day
    Total estimated business days40–45 days

    Important: this is on-site construction only. The Design & Planning phase — measurements, selections, layout development, permits — happens before this timeline begins and typically takes 4–8 weeks depending on the complexity of your selections.

    🔒 Continue to Part 2

    The Bay State process — how we deliver your bathroom from first call to final walkthrough

    You've finished Part 1 — everything a Greater Boston homeowner needs to know about hiring a contractor, understanding permits, and budgeting your project. Part 2 covers our complete process — consultation, design, permits, construction, completion. Tell us a bit about your project and we'll open the rest of the guide and prepare for a consultation.

    No spam, ever · highly rated on Google · Licensed MA contractor since 2007

    Ready to talk about your bathroom?

    Schedule a free consultation with our team. We'll visit your home, take measurements, and give you a clear written estimate within 2–3 business days.

    Schedule Your Free Consultation →Call 617-397-5158