Siding Installation in the East End / Warm Springs
HPC-compliant siding for East End historic homes — period-appropriate profiles, cedar restoration, James Hardie matching, original detail preservation.
Siding installation in the East End and Warm Springs Avenue is shaped by City of Boise Historic Preservation Commission requirements. HPC reviews exterior siding work in East End and Old Penitentiary Historic Districts and typically requires preservation of original siding where condition allows or replacement with materials matching original profile and aesthetic. Cedar lap or shake siding is original to most pre-1928 East End homes — HPC strongly prefers cedar restoration over wholesale replacement, and where replacement is justified, real cedar matching is often required. In some cases James Hardie fiber cement is HPC-acceptable when profile, exposure, and texture closely replicate cedar. Iron Crest's East End siding work emphasizes restoration of original cedar where condition allows (spot replacement, spot rot repair, comprehensive prep before paint), HPC-acceptable replacement only where restoration isn't viable, period-appropriate detailing for any new work including correct exposure, butt joints, corner detailing, and trim profiles. We work across the East End bungalow belt, Warm Springs Avenue mansions, and Old Penitentiary district homes.
Siding strategy in the East End depends heavily on era and what's currently on the home.
Pre-1900 Warm Springs Avenue mansions
Original siding typically wood lap (cedar, fir, or pine) or wood shake. Significant architectural detailing — corner boards, water tables, frieze boards, decorative trim. Restoration strongly preferred. Where replacement is justified, wood-matching essential.
1900–1925 Craftsman estates and bungalows
Cedar lap or wood shake universal. Original siding when intact often refinishable with proper preparation. Sometimes top one or two clapboards along ground are rotted requiring spot replacement. Premium scope often includes complete cedar restoration with new oil-based primer and paint.
1925–1940 transitional homes
Cedar lap, wood shake, sometimes brick, sometimes stucco. Style-specific siding decisions. Restoration preferred where viable.
Post-1940 East End infill
Sometimes outside Historic District boundaries. Various sidings — fiber cement, vinyl (older), engineered wood. Modern restoration practice appropriate.
East End siding projects cluster into recognizable shapes by era and condition.
1. The Cedar Restoration
Comprehensive restoration of original cedar lap or shake siding. Spot replacement of rotted areas with matching profile and exposure. Surface prep including failing paint scrape, oil-based stain blocker primer. Premium two-coat paint application. Result is preserved original character with renewed protection.
Target homes: 1900–1928 East End homes with original cedar siding in restorable condition. Permit: typically not required for cedar restoration; HPC review for any visible changes.
2. The Selective Replacement
Mostly intact cedar siding with sections that need replacement (often ground-contact lower clapboards or sections with severe weathering). Replacement uses matching cedar profile and exposure. Other areas restored with prep and paint.
Target homes: East End homes with mixed-condition cedar siding. Permit: building permit; HPC review.
3. The HPC-Acceptable Hardie Replacement
Full siding replacement with James Hardie fiber cement matching original cedar lap profile. Used where original cedar is beyond restoration. HPC review and approval required — depends on neighborhood and HPC member preferences. Some HPC members prefer real cedar replacement; others accept Hardie matching.
Target homes: East End homes with cedar beyond restoration. Permit: building permit; HPC review with approval contingencies.
4. The Cedar Replacement
Full siding replacement with real cedar matching original profile and exposure. Used where HPC requires wood matching. More expensive than Hardie replacement. Periodic maintenance painting required.
Target homes: East End homes where HPC requires cedar matching. Permit: building permit; HPC review.
5. The Trim Restoration
Restoration of original architectural trim — corner boards, water tables, frieze boards, decorative trim. Sometimes carved or millwork details. Wood replacement and refinishing. Often combined with cedar restoration or partial siding work.
Target homes: East End homes with substantial original trim worth restoring.
The East End / Warm Springs spans roughly two square miles with distinct sub-neighborhoods, each with its own remodeling personality.
Warm Springs Avenue Historic District
The premier residential corridor along Warm Springs Avenue from approximately Broadway Avenue to Walnut Street, listed on the National Register of Historic Places. Magnificent turn-of-century homes including Queen Anne Victorians, Colonial Revivals, Tudor Revivals, and grand Craftsman estates from 1890–1925. Many homes use geothermal heating drawn from the underlying hot-water aquifer (one of the largest geothermal districts in the United States). Lots typically 0.25–0.75 acre. Home values $1.2M–$5M+.
East End — Bungalow Belt
The dense bungalow neighborhoods between Broadway Avenue and the Foothills, north of Front Street. Predominantly 1908–1928 Craftsman bungalows on smaller lots (50' × 125' typical). Architectural cohesion is strong — built-in cabinetry, exposed rafter tails, low-pitched gable roofs, deep front porches. Locally designated East End Historic District requires Historic Preservation Commission review. Home values $550K–$1.4M.
Old Penitentiary Historic District
The historic neighborhood surrounding the Old Idaho Penitentiary museum, including portions of Old Penitentiary Road and adjacent streets. Mix of late-1800s ranchhand and early-20th-century working-class cottages, plus newer infill from the 1950s–80s. Locally designated historic district with Historic Preservation Commission review. Home values $475K–$950K.
Reserve Street / Park Center area
The corridor along Reserve Street and the Park Center development north of the river. Mix of pre-1925 Craftsman, 1950s-60s ranches, and newer 1990s-2010s infill. No Historic District constraint for most of this area. Home values $475K–$925K.
East Boise — Highlands transitional
The transitional zone between East End and the Foothills, climbing from Warm Springs Avenue up toward Table Rock and the Boise Foothills. Mix of 1920s-30s homes built on the original lower elevations of the Foothills and 1960s-80s ranches and contemporaries. Some properties have geothermal heat extending from the Warm Springs district. Home values $650K–$1.8M.
Reserve / Eastland infill streets
Smaller streets and infill developments throughout the broader East End. Mix of original pre-1925 homes interspersed with 1940s-50s post-war housing and 1960s-80s ranches. Lots vary widely. Sometimes outside formal Historic District boundaries. Home values $475K–$885K.
East End siding pricing reflects HPC requirements, period-appropriate detailing, EPA RRP lead-safe protocols, and the cost difference between cedar matching and Hardie alternative.
East End / Warm Springs siding installation ranges
Trim restoration (Original architectural trim restoration): $8,500–$22,000 / 2–4 weeks
Cedar restoration (Comprehensive restoration of original cedar with prep and paint): $35,000–$65,000 / 3–5 weeks
Selective replacement (Spot replacement of failed sections with cedar matching): $45,000–$85,000 / 5–8 weeks
HPC-acceptable Hardie replacement (Full replacement with James Hardie matching cedar profile): $85,000–$145,000 / 10–14 weeks
Cedar replacement (Full replacement with real cedar matching original): $95,000–$145,000 / 10–14 weeks
Pricing assumes Iron Crest's standard scope: HPC submittal where applicable, EPA RRP lead-safe practices throughout pre-1978 work, comprehensive WRB and flashing detailing, period-appropriate trim profiles and detailing, and a 5-year workmanship warranty + manufacturer materials warranties (typically 30 years on James Hardie, lifetime on cedar with proper maintenance).
The Warm Springs Avenue Historic District is listed on the National Register of Historic Places (since 1980). National Register listing primarily affects federal tax credits and federal-funded projects rather than imposing local design review, but the listing reflects the district's architectural significance and the community expectation that significant homes be preserved respectfully.
The East End Historic District is locally designated and requires City of Boise Historic Preservation Commission (HPC) review for any exterior modification visible from the public right-of-way — siding type and color, window replacement, roof material, porch modifications, additions, accessory structures, fencing. Iron Crest handles HPC submittals as part of standard project management. HPC review timelines: 4–8 weeks.
The Old Penitentiary Historic District is also locally designated with HPC review for visible exterior modifications. Same process as East End District.
EPA Lead Renovation, Repair and Painting (RRP) Program applies to virtually every East End project given the 1900–1928 construction wave. Iron Crest carries RRP certification and follows lead-safe work practices including HEPA containment, wet-paste paint scraping, lead-safe disposal, and final clearance testing where required.
Many East End and Warm Springs Avenue homes use geothermal heating from the City of Boise Geothermal District — heat exchanged from naturally hot underground water (174°F at the source). Geothermal heat affects HVAC scope: existing radiant baseboards, hydronic radiators, or fan-coil units must be properly integrated or replaced with appropriate systems. Iron Crest has experience with the Boise geothermal system specifically.
Asbestos testing required for pre-1980 demolition work — common locations include sheet flooring, mastic, popcorn ceilings, pipe insulation, vinyl asbestos tile, and sometimes roofing felt or building paper. East End homes pre-1925 often have plaster-and-lath walls with horsehair binder rather than later drywall — different demolition and repair practices apply.
Siding material specification for East End homes prioritizes preservation of original character, period-appropriate detailing, and HPC compliance.
Real cedar — restoration or replacement
Original East End siding is universally cedar. Real cedar replacement matches original profile, exposure, butt joints, and corner details. More expensive than Hardie ($35–$55 per square foot installed) but HPC-preferred when restoration isn't viable.
James Hardie fiber cement matching cedar
HardiePlank lap siding (5.25-inch or 7.25-inch exposure) with cedar woodgrain texture replicates original cedar. HardieShingle for shake aesthetic. Only HPC-acceptable when matching is sufficient — varies by HPC member preference. $14–$22 per square foot installed.
Period-appropriate trim profiles
Corner boards, water tables, frieze boards, window/door casings, sometimes decorative trim. Iron Crest fabricates or sources matching profiles. Cedar trim sometimes preferred over fiber cement for visual continuity. Cost: $25–$95 per linear foot for premium trim work.
WRB and flashing — comprehensive details
Tyvek HomeWrap or premium WRB. Proper flashing tape at all transitions, window/door rough openings, and penetrations. Z-flashing at horizontal transitions. Pan flashing at all rough openings.
Color and aesthetic strategy
HPC-compliant colors — Victorian/Colonial Revival mansions on Warm Springs may have rich saturated multi-color palettes. Craftsman bungalows in East End belt typically warm earthtones. ColorPlus pre-finished James Hardie offers stocking colors with 15-year fade warranty. Field-painted cedar with premium acrylic paint and proper primer.
EPA RRP lead-safe demolition
Universal in pre-1978 East End siding work. HEPA containment, wet-paste paint scraping, lead-safe disposal. Cost addition: $4,500–$15,500 depending on scope.
Period-appropriate butt joints and details
Original cedar lap typically had specific butt joint patterns and corner board treatments. Iron Crest replicates original detailing in any replacement work for visual continuity.
Underlayment — period-appropriate
Where appropriate (especially behind cedar restoration), traditional building paper is sometimes specified by HPC. Modern WRB more common but Iron Crest accommodates HPC preferences.
East End siding projects surface specific issues during pre-construction.
- •Universal pre-1978 lead-based paint requiring EPA RRP protocols. Cost addition: $4,500–$15,500.
- •Asbestos in pre-1980 building paper or roofing felt. Sometimes asbestos-containing materials in original construction. Testing $300–$700 per sample. Abatement: $4,500–$15,500.
- •Failed sheathing requiring replacement. Original plywood or board sheathing sometimes shows water damage. Replacement: $8–$15 per square foot.
- •Window and door integration issues. Original window flashing often inadequate. Sometimes warrants window replacement during siding work for proper integration. Window replacement: $1,800–$3,800 per window for HPC-acceptable.
- •Termite or wood-destroying organism damage. Less common in Boise but occasional. Repair: $2,500–$15,000 depending on extent.
- •Foundation transition and capillary break. Original construction sometimes lacks proper capillary break at foundation-to-wall transition. Detailing addition: $1,800–$4,500.
- •HPC review for siding type or profile change. Mandatory for visible exterior changes. Plan revisions: $2,500–$8,500. Timeline addition: 4–8 weeks.
- •Original architectural trim worth preserving. Corner boards, water tables, frieze boards often have substantial period character. Restoration preferred: $25–$95 per linear foot.
- •Cedar shake roof transitions where applicable. Some original East End homes have cedar shake roofs that integrate with siding aesthetic. Coordination: $3,500–$8,500.
Discovery and design (Weeks 1–3)
On-site walkthrough including substrate condition assessment. Lead and asbestos pre-screening. HPC scope verification. Material direction.
HPC submittal and permitting (Weeks 3–8)
HPC submittal with material samples. City of Boise building permit submittal where structural changes. Plan revisions per HPC and City feedback. Permit issued.
Materials ordering (Weeks 6–10)
Cedar or James Hardie ordering 4–8 weeks lead time on premium materials.
Site preparation (Day 1 of work)
Plant and outdoor space protection. Site logistics. Owner property access protocols.
Demolition or restoration prep (Days 1–7)
EPA RRP lead-safe containment. For restoration: pressure wash, scraping with HEPA collection, sanding. For replacement: existing siding removal. Substrate inspection.
WRB and flashing (Days 7–14)
WRB installation. Flashing detail at all penetrations, transitions, and rough openings. Inspection.
Siding install (Days 14–55)
Cedar or James Hardie installation per material requirements. Period-appropriate detailing throughout. Trim install. Sometimes cedar takes longer due to acclimation.
Trim, painting, and finishing (Days 55–75)
Trim installation. Caulking. Field painting (if not factory-pre-finished or for cedar restoration). Final flashing details.
Punch and walkthrough (Days 75–95)
Final inspection. Owner walkthrough. Punch list resolution. Site cleanup. 5-year workmanship warranty begins.
East End siding installation requires HPC compliance fluency, period-appropriate detailing expertise, EPA RRP lead-safe certification, cedar restoration skill, and original character preservation.
- City of Boise Historic Preservation Commission — HPC review process, application requirements, design guidelines for East End and Old Penitentiary Historic Districts.
- Idaho State Historic Preservation Office (SHPO) — State-level historic preservation guidance and federal Section 106 review for federally-funded projects.
- City of Boise Geothermal Heating District — Information on the city geothermal heating system that serves Warm Springs Avenue and parts of East End — service connection, system specifications, billing.
- EPA Lead Renovation, Repair and Painting (RRP) Program — Required certification and work practices for renovation in pre-1978 homes — applies to virtually every East End project.
- Idaho DEQ Air Quality (Asbestos) — Testing and abatement guidance for pre-1980 East End homes.
- Idaho Division of Building Safety — Contractor Search — Verify any contractor's RCE license, bonding, and insurance through the official Idaho database.
- City of Boise Planning & Development Services — Building, electrical, plumbing, mechanical permits.
Can I replace cedar siding with James Hardie in the East End?
Sometimes — depends on HPC review. Some HPC members accept James Hardie matching cedar profile and texture; others require real cedar replacement. Iron Crest verifies HPC scope at consultation and prepares submittals tailored to current HPC member preferences. Cost: Hardie ($85,000–$145,000) versus real cedar ($95,000–$145,000) for typical East End home.
How much does cedar restoration cost?
$35,000–$65,000 for typical East End bungalow. Includes spot replacement of rotted areas, surface preparation including failing paint scrape with HEPA collection, oil-based stain blocker primer, and premium two-coat acrylic paint. EPA RRP lead-safe protocols throughout.
How long does cedar last with proper restoration?
12–15+ years between repaints with proper preparation and premium products. Cedar is durable when properly maintained — original Boise cedar has often lasted 100+ years. The key is regular paint maintenance and spot repair before damage progresses.
What about HPC review for siding work?
HPC reviews exterior siding work in East End and Old Penitentiary Historic Districts. Material samples, profile drawings, and color samples typically required. Iron Crest prepares HPC submittal as part of standard project management. Plan revisions: $2,500–$8,500. Timeline addition: 4–8 weeks.
What if asbestos is found in original building paper?
Some pre-1980 East End homes have asbestos in roofing felt or building paper. Testing first ($300–$700 per sample). Abatement before siding work: $4,500–$15,500. Iron Crest tests pre-1980 substrates before demolition.
How do you preserve original architectural trim?
Original corner boards, water tables, frieze boards, window/door casings often have substantial period character. Iron Crest assesses condition during walkthrough — restoration preferred where viable, sometimes selective replacement of damaged sections. Cost: $25–$95 per linear foot for trim work.
Can you match the original cedar profile?
Yes for both real cedar replacement and James Hardie matching. Iron Crest sources or fabricates matching profiles. Original cedar lap exposure and butt joint patterns replicated in any replacement work.
What about windows during siding replacement?
Sometimes logical to combine siding replacement with window replacement to ensure proper flashing and window upgrade. HPC strongly prefers original window restoration; where replacement is justified, HPC-acceptable simulated divided light replacement: $1,800–$3,800 per window.
Ready to start your East End / Warm Springs siding installation project?
Free in-home consultation, honest contingency-based budgeting, and the experience these older Boise homes require. Iron Crest Remodel — Idaho RCE #6681702, EPA RRP lead-safe certified, $2M general liability, 5-year workmanship warranty.
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