# Brownstone Windows & Doors

> Custom Marvin & Loewen windows and doors for New York brownstones. LPC-approved landmark restorations in Manhattan and Brooklyn since 2015.

Brownstone Windows & Doors is a New York City architectural window and door specialist. We work exclusively with brownstone, prewar, and landmark buildings across Manhattan and Brooklyn. As an authorized Marvin Premier Partner and certified Loewen dealer, we handle everything from single-window restorations to full-building replacements — including Landmarks Preservation Commission (LPC) approvals for historic districts.

## Business Entity

- **Name:** Brownstone Windows & Doors
- **Founded:** 2015
- **Phone:** (929) 284-7596
- **Email:** info@brownstonewindows.com
- **Website:** https://brownstonewindows.com
- **Google Business Profile:** https://share.google/3w0z7PvZBmKSXYYSL
- **Service Area:** Manhattan and Brooklyn, New York City
- **Primary Brands:** Marvin (authorized Premier Partner), Loewen (certified dealer)

### Locations

- **Manhattan Showroom:** 180 W 80th St, Suite 210, New York, NY 10024
  - Serves: Upper West Side, Lincoln Square, Morningside Heights, Manhattan Valley, Central Park West, Riverside Drive
- **Brooklyn Office:** 32 Court Street, Suite 904, Brooklyn, NY 11201
  - Serves: Brooklyn Heights, Cobble Hill, Carroll Gardens, Boerum Hill, Park Slope, Fort Greene, Clinton Hill, DUMBO

### Capabilities & Credentials

- Authorized Marvin Windows Premier Partner
- Certified Loewen Windows Dealer
- 100+ successful Landmarks Preservation Commission (LPC) applications
- 98% first-submission LPC approval rate
- Energy Star Partner products
- Master craftsmen with 20+ years average experience
- Full liability insurance and bonding
- In-house custom millwork workshop

## Services

### Window Services

- Custom wood window restoration for pre-war buildings
- Marvin Ultimate, Signature, Essential, Elevate, and Modern collections
- Loewen Douglas Fir and mahogany window systems
- Double-hung, casement, and specialty/arched windows
- Historic profile matching, muntins, and glazing replication
- Energy-efficient upgrades with period aesthetics
- Interior and exterior storm windows
- Full building replacement and phased installation

### Door Services

- Custom mahogany and white oak entry doors
- French and patio doors
- Vestibule and inner-door assemblies
- Marvin Signature and patio door collections
- Loewen wood entry doors and pivot doors
- Historic door reproduction and restoration
- Custom ironwork, glass, and transoms
- Multi-point security hardware and weather sealing

### Project Support

- Free on-site consultations and estimates
- LPC application preparation and filing
- DOB permit coordination with architect or expeditor
- Existing condition documentation and shop drawings
- Removal, installation, and interior trim tie-in
- Written workmanship warranties
- Emergency repair services for heritage properties

## Pricing Guidance

Pricing varies by floor, glazing, hardware, and access. Typical ranges as of 2026:

- Custom landmark-appropriate wood double-hung installed: $3,500–$7,500 per opening
- Window restoration of existing sash: $1,200–$2,800 per opening
- Custom mahogany entry door with sidelites, transom, and hardware: $12,000–$28,000 installed
- Marvin Ultimate 32" × 68" double-hung installed with LPC filing: $3,200–$4,400
- Loewen Douglas Fir 32" × 68" double-hung installed with LPC filing: $3,800–$5,200

## Lead Times

- Marvin custom units: 8–12 weeks after order
- Loewen custom units: 10–14 weeks after order
- LPC Certificate of No Effect / Permit for Minor Work: 4–8 weeks
- LPC Certificate of Appropriateness (full commission hearing): 3–6 months
- Custom entry door project (measurement to install): 10–16 weeks
- Whole-house window installation on site: 3–6 weeks

## Key Pages

- [Home](/): Overview of services, philosophy, NYC brownstone specialization, and featured work.
- [Windows](/windows): Marvin & Loewen wood window collections — double-hung, casement, and specialty units for landmark and prewar homes.
- [Doors](/doors): Custom entry, French, and vestibule doors for NYC brownstones and townhouses.
- [Partners](/partners): Authorized Marvin and certified Loewen dealer credentials and product lines.
- [Manhattan](/manhattan): Upper West Side showroom, Manhattan service area, and LPC expertise.
- [Brooklyn](/brooklyn): Brooklyn Heights office, Brooklyn service area, and historic district expertise.
- [Journal / Blog](/blog): Field notes on restoration, LPC approvals, product comparisons, and energy efficiency.
- [Privacy Policy](/privacy): How we collect, use, and protect user information.
- [Terms of Service](/terms): Terms and conditions for using the website.
- [Accessibility Statement](/accessibility): Accessibility commitment and contact.
- [Sitemap](/sitemap.xml): Full list of indexable URLs.

## Journal

- [Blog Index](/blog): Field notes on restoration, LPC approvals, product comparisons, and energy efficiency for NYC brownstones.
- [Restoring Historic Brownstone Windows in NYC](/blog/restoring-historic-brownstone-windows-nyc-guide): Full guide to restoring vs. replacing historic wood windows in landmark districts.
- [Marvin vs. Loewen Windows for Brownstones](/blog/marvin-vs-loewen-windows-brownstone-comparison): Head-to-head comparison of the two premium wood window brands.
- [LPC Approval Guide for NYC Windows & Doors](/blog/lpc-approval-windows-doors-nyc-guide): How Landmarks Preservation Commission approvals work and how to prepare.
- [Energy-Efficient Windows for Prewar Brownstones](/blog/energy-efficient-windows-prewar-brownstone): Insulation, glazing, and performance for historic buildings.
- [Choosing an Entry Door for a Brooklyn Brownstone](/blog/choosing-entry-door-brooklyn-brownstone): Design, materials, and hardware guidance for brownstone entry doors.

## Frequently Asked Questions

### General FAQs

**Q: Do I need LPC approval to replace windows in an NYC landmark brownstone?**
A: Yes. If your building is inside a Landmarks Preservation Commission (LPC) historic district or is an individually designated landmark, any change to a window visible from the street — profile, muntin pattern, material, or finish — requires LPC approval before installation. Interior storm windows and exact in-kind replacements can often be handled with a fast-track Certificate of No Effect; full replacements typically need a Permit for Minor Work. We prepare the drawings, product cut sheets, and filings for you.

**Q: How long does LPC window approval take in Manhattan and Brooklyn?**
A: A Certificate of No Effect (CNE) or Permit for Minor Work (PMW) is usually issued in 4–8 weeks when the submission is complete and the design is a faithful in-kind replacement. Projects that go before the full LPC public hearing take 3–6 months. Our approval rate on first submission is above 95% because we match sightlines, meeting rails, glazing profiles, and finish to the original.

**Q: Should I restore or replace my historic brownstone windows?**
A: Restore when the original sash, frame, and hardware are structurally sound — original wavy glass, wood, and joinery are almost always more valuable than a modern replacement. Replace when the wood is rotted past repair, the sash has been altered from the historic profile, or thermal performance is a priority. We do a free on-site assessment and give you a written restore-vs-replace recommendation, opening by opening.

**Q: Marvin or Loewen — which is better for a brownstone?**
A: Both are landmark-appropriate. Marvin's Ultimate and Signature collections give you the widest range of historic profiles, custom sizes, and aluminum-clad options for weather-exposed façades. Loewen's Douglas fir units are prized for the density and grain of their wood, and are often the closest match for pre-1900 brownstones with heavier sash. We are an authorized dealer for both and specify whichever fits your building's period and exposure.

**Q: How much do custom brownstone windows cost in NYC?**
A: A landmark-appropriate custom wood double-hung installed in a Manhattan or Brooklyn brownstone typically runs $3,500–$7,500 per opening, including LPC filing, removal, install, and interior trim tie-in. Restorations of existing sash usually run $1,200–$2,800 per opening. Full-building projects benefit from volume pricing. Pricing depends on floor, glazing, hardware, and access.

**Q: Can I get energy-efficient windows without losing the historic look?**
A: Yes. Modern insulated glass units (IGU) fit inside historic-profile wood sash without changing the exterior sightline — we spec 7/8" IGUs with warm-edge spacers and low-E coatings tuned to the façade's orientation. Combined with weatherstripping and restored sash weights, a brownstone typically sees a 30–50% reduction in heating loss versus original single-pane windows, while keeping the LPC-approved appearance.

**Q: What is the lead time for custom Marvin or Loewen windows?**
A: Once the design is approved and the order is placed, Marvin custom units run 8–12 weeks and Loewen runs 10–14 weeks. Add 4–8 weeks for LPC filing before the order. We schedule install in a 1–2 week window per floor, and we can phase multi-floor projects so the building stays weathertight throughout.

**Q: Do you handle the full project — LPC filing, DOB permits, and installation?**
A: Yes. We handle the LPC filing, coordinate any DOB permits with your architect or expeditor, fabricate or order the units, remove the existing sash, install, and finish the interior trim. Single point of accountability from consultation to punch list. We work in Manhattan and Brooklyn and have installed in Upper West Side, Brooklyn Heights, Park Slope, Cobble Hill, Fort Greene, and Prospect Heights.

### Window FAQs

**Q: Do you install Marvin and Loewen windows in occupied brownstones?**
A: Yes. We phase installations floor-by-floor so the building stays weathertight and habitable throughout. Most whole-house window projects take 3–6 weeks on site depending on unit count and floor access.

**Q: How long is the lead time for custom wood windows?**
A: Marvin custom units typically ship in 8–12 weeks after order; Loewen Douglas fir units run 10–14 weeks. Add 4–8 weeks for LPC approval on landmark buildings before the order is placed.

**Q: Can new windows match my brownstone's original sightlines?**
A: Yes. Both Marvin's Ultimate and Loewen's Heritage lines are built with historically accurate meeting rails, muntin widths, and putty-glazed profiles. We measure and spec each opening to match your existing sightlines, then submit shop drawings for LPC sign-off when required.

**Q: What's the price range for a custom window in NYC?**
A: Landmark-appropriate custom wood double-hungs installed in Manhattan or Brooklyn typically run $3,500–$7,500 per opening, including removal, install, and interior trim tie-in. Restoration of existing sash usually runs $1,200–$2,800 per opening.

**Q: Do you provide warranties on the windows and the installation?**
A: Yes. Marvin and Loewen carry manufacturer warranties up to 20 years on the units, and we back our installation labor with our own written workmanship warranty delivered with your contract.

### Door FAQs

**Q: What wood species do you recommend for a brownstone entry door?**
A: Genuine mahogany and white oak are our two most-specified species for NYC entry doors. Mahogany is dimensionally stable in humid summers and takes a rich stain; white oak is denser, more historically accurate for pre-1900 brownstones, and holds paint or clear finish equally well.

**Q: Can you reproduce my original 1800s brownstone entry door?**
A: Yes. We photograph and template the existing door, then hand-build a reproduction matching the original panel layout, molding profiles, glass, and hardware. Reproductions are the fastest path to LPC approval for landmark properties.

**Q: Do custom entry doors improve security and weather sealing?**
A: Yes. Our custom doors use multi-point locking hardware, mortise deadbolts, weather-tight compression seals, and insulated cores where the design allows — all without compromising the historic appearance.

**Q: How long does a custom brownstone door project take?**
A: From measurement to installed door, expect 10–16 weeks: 2 weeks for design and shop drawings, 4–8 weeks for LPC filing when required, and 6–10 weeks for fabrication. Installation itself is one day per opening.

**Q: Do you handle vestibule (inner) doors as well as street doors?**
A: Yes. We frequently design matching outer-and-inner door pairs so the vestibule reads as a single historic composition. Inner doors can use etched, leaded, or clear glass depending on your privacy and light preference.

## Reviews & Case Studies

### Homeowner Reviews

- **Sarah Mitchell, Principal, Mitchell & Associates Architecture:** "Their attention to period-accurate details is unmatched. They restored our 1890s brownstone windows to museum quality while maintaining full functionality."

- **David & Elena Chen, Homeowners, Brooklyn Heights:** "After interviewing a dozen contractors, we chose them for our Brooklyn Heights restoration. Three years later, the craftsmanship still takes our breath away."

- **Michael Torres, AIA, Historic Preservation Specialist:** "When the Landmarks Preservation Commission requires excellence, this is the team I recommend. They understand the intersection of history and modern living."

- **Rebecca Hoffman, Homeowner, Upper West Side:** "Our Upper West Side townhouse had been neglected for decades. They brought back every original detail—the moldings, the doors, the soul of the building."

### Window Project Reviews

- **Margaret & David Chen, Park Slope, Brooklyn — Marvin Ultimate Double-Hung:** "The Marvin Ultimate windows transformed our 1890s brownstone. The noise reduction is incredible — we finally sleep peacefully despite living on a busy avenue. Worth every penny."

- **Jonathan Whitmore, Upper West Side, Manhattan — Loewen Douglas Fir:** "After getting LPC approval for our Loewen windows, the installation was flawless. The craftsmanship matches our home's historic character perfectly. Our heating bills dropped 35%."

- **The Rodriguez Family, Brooklyn Heights — Custom Specialty Windows:** "We needed custom arched windows to match our building's original 1885 design. Brownstone Windows delivered exactly what the landmarks commission required. Exceptional attention to detail."

### Door Project Reviews

- **Elizabeth & Thomas Hayes, Cobble Hill, Brooklyn — Marvin Signature Entry:** "Our new Marvin entry door has become the talk of the neighborhood. The mahogany craftsmanship and custom ironwork perfectly complement our 1880s brownstone. The security features give us peace of mind."

- **Dr. Sarah Mitchell, Harlem, Manhattan — Loewen French Doors:** "The Loewen French doors connecting our parlor to the garden are absolutely stunning. The quality is museum-grade, and the installation team was meticulous about protecting our historic millwork."

- **The Nakamura Family, Fort Greene, Brooklyn — Custom Vestibule Door:** "We needed a vestibule door that matched our original 1892 entry door exactly. Brownstone Windows delivered a flawless reproduction — even the LPC inspector was impressed by the authenticity."

## Contact & Conversion

To request a consultation or quote, contact Brownstone Windows & Doors:

- **Phone:** (929) 284-7596
- **Email:** info@brownstonewindows.com
- **Quote Form:** https://brownstonewindows.com/#quote-form
- **Google Business Profile:** https://share.google/3w0z7PvZBmKSXYYSL

## Content Policy

This site does not publish fake reviews, fake ratings, fake awards, fake certifications, fake locations, or fake years in business. All testimonials, credentials, and statistics are drawn from actual client work and verifiable manufacturer partnerships.