410 properties for sale in Emerald Lake, Emerald Lake Hills San Mateo CCD San Mateo County California

Offers due friday(18th) by 12NOON Rarely does a Belmont Hills home deliver a straight-on view of the San Francisco Bay and East Bay hills alongside a backyard you can actually use. This one does. Tucked on a quiet street with little drive-through traffic, enjoy that view from the. 500 sq. Ft. rear deck, the kitchen, the dining room, and a bedroom. The terraced backyard is thoughtfully leveled into real, usable space rather than narrow hillside strips, plus a private office shed for working from home. Parking is equally rare for the Belmont Hills: a 2-car garage plus driveway space for 5 more vehicles. Inside, vaulted ceilings and a stone fireplace anchor the living room, topped by a coffered, pyramid-detail ceiling. Five specialty skylights feature angled, crown-molded wells with hidden lighting that glows at night. The primary suite includes a jetted soaking tub. Downstairs offers flexible living space with a secondary kitchen, plus a bonus room ready to become a game room, media room

Modern sophistication meets effortless indoor-outdoor living in this beautifully remodeled 4-bedroom, 3-full bath San Mateo Village home on a tree-lined street. Expanded with permits in 2017, the home is filled with natural light from generous windows and a large skylight, while hardwood floors, crown molding, wainscoting, double-pane windows, and thoughtful updates reflect pride of ownership throughout. The open-concept living, dining, kitchen, and family areas create an inviting flow for everyday living and entertaining, featuring a gas-burning fireplace, quartz countertops, stainless steel appliances, abundant cabinetry, and a breakfast island. Hidden pocket doors create separation, sliding glass doors connect the family room to a large patio and landscaped backyard, while the serene primary suite features vaulted ceilings, a walk-in closet & spa-like shower. Dedicated laundry room, central A/C and heat, updated electrical, plumbing, fire sprinkler system, attached garage w/epoxy fl

RARE FLAT CORNER LOT | Experience the best of SAN CARLOS hillside living without sacrificing usable outdoor space. Set on a rare, flat 9,171 square feet corner lot in the sought-after BEVERLY TERRACE neighborhood, this home offers an exceptional combination of privacy, flexibility and room to create. The versatile floor plan features 3 bedrooms, 3.5 bathrooms, a flex room and an internal ADU, creating options for extended family, guests, a private home office or additional living space. The primary bedroom enjoys convenient access to the hot tub, adding a relaxing, retreat-like element to everyday living. Owned solar adds another layer of everyday efficiency & long-term value. The expansive back and side yards are a true blank canvas. Reimagine it as a San Carlos private oasis with outdoor entertaining spaces, gardens, play areas or recreation or explore the possibilities for future expansion. The rare usable land is an especially compelling find in the typically hilly Beverly Terrace

Rare, Radiant & Truly Special: Welcome to 3322 Brittan Avenue #4, a stunningly and lovingly remodeled 3 Bed & 2 Bath residence offering approximately 1,239 sq. Ft. of luminous, artfully designed living space in the coveted San Carlos hills. Reimagined by the current owners with exquisite attention to detail, the home showcases a fresh contemporary aesthetic, elegant designer finishes and a flowing layout that feels both polished and warmly inviting. Every space has been carefully updated to deliver a home that is truly move-in ready. The setting strikes the perfect balance of serene hillside living and everyday convenience. Nestled within top rate San Carlos school district, the property is just minutes from Crestview Park, additional neighborhood parks, scenic trails and lush open spaces. Easy access to Highway 280 makes commuting across the Peninsula effortless. Vibrant downtown San Carlos and charming Laurel Street are also just moments away, offering a delightful selection of resta

Welcome to 213 Estrella Way, ideally situated on one of the premier streets in desirable San Mateo Village. This expanded single-story home blends classic charm, thoughtful updates, and wonderful indoor-outdoor living. Mature landscaping, colorful gardens & a charming covered front porch create an inviting first impression. Inside, hardwood floors flow through the living room, where a classic fireplace creates a warm focal point and double-pane windows bring in abundant natural light. The eat-in dining area opens to the kitchen featuring granite countertops, generous cabinetry, and sun tunnel. Step down to the spacious family room with vaulted ceiling, bar seating, freestanding fireplace, and sliding doors opening to an expansive Trex deck. Three bedrooms feature hardwood floors, including the primary with direct deck access. 2 full bathrooms include an updated bath with decorative tile and frameless glass shower. The spacious backyard offers Trex deck, lawn, mature landscaping, and pl

Unrivaled in contemporary refinement, this expansive 4BR/4BA townhouse is set in one of Bay Meadows premier locations and stands among the communitys most distinguished residences. Architected with the presence, scale, and livability of a single-family home, the intentionally proportioned spaces flow naturally across a highly functional multi-level floor plan. Soaring ceilings, wide-plank floors, sophisticated tile-clad feature walls, modern wainscoting, rich moldings, custom built-ins, and recessed lighting elevate the interiors throughout. Premium appliances, integrated surround-sound ceiling speakers, custom closets, and a whole-home water filtration and softening system further reflect the homes exceptional attention to detail. Generous living and dining areas extend from the kitchen, giving an open, connected feel. Main-level bedroom and full bath offer welcome separation, complemented by a private lower-level ensuite bedroom. Upstairs, two additional bedrooms include a spacious p

A jewel box in Atherton. In a town defined by grand scale, this residence, built by a locally renowned builder and completed in 2022 is uniquely intimate. Set on approximately 0.28 acres behind mature landscaping, the 5,527-square-foot contemporary offers five bedrooms and seven bathrooms across a plan built for effortless living and entertaining. Wide-plank white oak floors, floor-to-ceiling glass, and a sculptural floating staircase anchor interiors bathed in natural light. The pool, spa, and fire pit lounge form an outdoor sanctuary framed by green canopy and privacy. A separate guest house adds rare flexibility for extended family, staff, or a private office. The primary suite is a study in calm, with floor-to-ceiling glass framing treetop views. A fully integrated Savant system commands lighting, climate, and entertainment from a single interface, complemented by built-in multi-room audio flowing from the great room to the pool terrace. Gated, camera-monitored security adds privac

Modern design meets effortless living in this new Hazel Plan on tree-lined Oakdell Drive in Central Menlo Park. Set on a deep lot, the home is designed with indoor-outdoor living in mind. The expansive kitchen features Wolf and Sub-Zero appliances, a butlers pantry, and dining nook, and opens to the great room with stacking glass sliders leading to a covered outdoor living area. The main level offers flexibility, including a private ADU with its own living area, kitchenette, en suite bedroom, and walk-in closet. A separate flex room and an additional secondary bedroom and bath provide even more space for guests, a home office, or everyday living. Upstairs, the primary suite features a large walk-in closet and bath with a freestanding tub and walk-in shower. Two generously sized secondary bedrooms share a bath with dual sinks and a separate tub and toilet area, and the laundry room is conveniently located on the same floor. Located minutes from downtown Menlo Park, Stanford University,

One block from downtown Laurel Street! Wonderful Cape Cod style condo/townhome in a small complex with only 3 units. Kitchen with granite counters, stainless appliances. Living room/dining area features a gas fireplace and opens to the deck. Separate laundry closet includes a washer and dryer. Great floor plan features the living area and ½ bath on the main floor and the bedrooms and beautifully remodeled modern baths upstairs. Oak wood flooring and freshly painted throughout. High ceilings, skylights and extra storage complete this home. Large 2-car garage w EV charging. The inviting common area yard is perfect to entertain or BBQ. Ideally located just. 3 miles to Caltrain, 101 Freeway, dog park, library, and the bustling Laurel Street shops and restaurants. Top-Rated school district. Low $300 HOA dues

STUNNING SOPHISTICATION defines this beautifully appointed residence in San Mateos sought-after Beresford/San Mateo Terrace neighborhood. Set on a 6,000-square-foot lot, this single level, three-bedroom, two-bath home blends timeless character, impressive views, and effortless indoor/outdoor living. Gleaming hardwood floors, beautiful windows, abundant natural light, and a flowing floor plan create an immediate sense of warmth. At the heart of the home, a gracious living room is anchored by a striking stacked-stone fireplace and built-in bookcases, with glass doors opening to the private rear yard. Here, a sparkling pool and spa create an inviting backdrop for entertaining, dining, and relaxation. The well-appointed kitchen features generous cabinetry, stainless steel appliances, granite countertops, skylight, and casual dining area, while the formal dining room connects seamlessly to the outdoors. Three spacious bedrooms include a serene primary suite enjoying views across the pool, g

Top-floor living with the Bay Trail at your doorstep! This refreshed 1-bedroom 1-bath condo pairs easy living with a prime Bay Area lifestyle. Tall ceilings create an airy feel, while new interior paint, new flooring, new kitchen countertops and a new fireplace mantel give the home a fresh, move-in-ready vibe. The eat-in kitchen offers space for casual dining and meal prep. The spacious walk-in closet in the roomy primary bedroom, additional closet space and private full-size laundry room bring the everyday conveniences youll love. Step onto your private balcony to relax, sip your morning coffee, or wind down at the end of the day. Secure gated under-building parking, tons of guest parking, a community pool and tennis courts add to the package. Just across the way, enjoy the beautiful SF Bay Recreational Trail for walking, running, biking, and sunset strolls. Walk to local eats, groceries, parks, and places of worship, with convenient access to major tech employers, Silicon Valley, SF

Panoramic canyon and mountain views define this beautifully updated 3-bedroom, 2-bath top-floor end unit in Brittan Heights. Filled with natural light, the home features a vaulted living room with fireplace, wood laminate floors and direct access to a private balcony overlooking the canyon and mountains. The adjoining dining area shares the scenic outlook, while the updated kitchen offers white shaker cabinetry, quartz counters, subway tile backsplash and stainless-steel appliances. The spacious primary suite includes a walk-in closet and spa-inspired bath with oversized shower and dual-sink vanity. Two additional bedrooms provide flexibility for guests or a home office. An updated second bath, full-size laundry room, central air conditioning, Nest thermostat and extra storage add convenience. Brittan Heights offers multiple pools, clubhouse, tennis courts, playgrounds, walking paths and beautifully maintained grounds. Enjoy highly regarded San Carlos schools, including Carlmont High S

First time on the market in over 70 years! Welcome to this cherished 3-bedroom, 2-bathroom family home in the highly desirable San Mateo Village neighborhood. The inviting living room features beautiful built-in bookshelves, while the dining room showcases an exposed beam ceiling and a warm, welcoming atmosphere. Additional highlights include two updated bathrooms, beautiful hardwood floors, dual-pane windows, and central heating. The well-appointed kitchen features stainless steel double ovens, a gas cooktop, and a convenient breakfast nook that seamlessly opens to the spacious family room, complete with a vaulted ceiling and wet bar. Step outside from the breakfast nook into the expansive, private backyard an ideal setting for entertaining, relaxing, or enjoying time with family and friends. A Trex deck and paver patio provide multiple areas for outdoor dining and gathering. The backyard also features a versatile bonus room/shed with electrical outlets, offering excellent potential f

Welcome to this stunning 2021-built luxury residence, offering modern design and spacious living on an approximately 9,400 sqft lot. Thoughtfully designed for both everyday comfort and entertaining, this 5-bedroom, 4-bathroom home features bright, open interiors and contemporary finishes throughout. The bright, open kitchen features quartz countertops, a spacious center island, stainless steel appliances, and sun tunnels for abundant natural light. The spacious living room with fireplace offers a welcoming space. Engineered wood flooring, Milgard double-pane windows, recessed lighting, and central A/C with smart thermostat add modern comfort. The primary suite offers a walk-in closet, dual vanity, and LED lighted mirror, while additional bedrooms and bathrooms provide flexibility. The private, enclosed front and backyard feature $120K in fencing and yard upgrades, plus a 965 sqft wood deck, ideal for outdoor dining and entertaining. Level 2 EV charger and NEM 2.0 solar system support e

A grand Laurelwood residence with impressive scale and presence, this 5-bedroom, 4-bath home offers approx. 2,610 sq. Ft. on a 13,000+ sq. Ft. lot with a pool and generous outdoor space. Soaring ceilings and a sweeping circular staircase introduce spacious formal and informal living areas. The updated kitchen features a Bertazzoni five-burner range, custom cabinetry, pantry and wine refrigerator, opening with the breakfast area and family room directly to the backyard. An expansive patio and covered pavilion create inviting spaces to dine, gather and relax poolside. The main level includes a flexible fifth bedroom and full bath, ideal for guests or an office. Upstairs, the primary suite with en-suite bath is joined by three additional bedrooms and a spacious dual-vanity bath. Modern upgrades include Tesla solar with Powerwall, EV charging, central A/C, tankless water heater, updated pool equipment, and a recently completed sewer lateral and cleanout. An attached 3-car garage plus pad p

Step inside and discover an unexpected oasis in the heart of San Mateo. Bright, spacious and beautifully updated, this inviting home features generously sized bedrooms, an open and light-filled living room, dedicated dining area and a large renovated kitchen designed for both everyday living and entertaining. A beautifully updated bathroom adds to the move-in-ready appeal, while a private office overlooking the backyard creates an ideal work-from-home retreat. The oversized backyard is truly special, a thoughtfully designed outdoor escape featuring a pergola, firepit, raised planters, decomposed granite, mature citrus trees, storage and multiple spaces to dine, gather, play and relax. Whether hosting friends or enjoying a quiet evening at home, this is a backyard built to be enjoyed. Located in San Mateo Village, the home is close to highly regarded George Hall Elementary and Hillsdale High School, along with neighborhood favorites including Casanova Park, and additional parks and trai

Just steps away from beautiful Flood Park, this charming home combines comfort, versatility, and convenience in an outstanding Menlo Park location. A covered brick porch welcomes you inside to a warm two-level floorplan featuring hardwood floors, crown molding, and abundant natural light. The living room is centered by a fireplace flanked by built-ins, while the dining room leads to a kitchen with granite countertops and appliances from brands including Bosch. Four comfortable bedrooms and a dedicated office provide flexibility, including an upstairs bedroom with its own kitchenette and private outdoor entrance. The backyard is a peaceful setting with a brick patio, colorful plantings, and privacy hedges. Ideally located just minutes from downtown Menlo Park, Palo Alto, and Highway 101, as well as the Meta campus, this home is also served by highly regarded schools including Laurel Elementary, Hillview Middle, and Menlo-Atherton High (buyer to verify eligibility)

Located in The Preserve, this beautifully updated end unit townhome offers a desirable tri-level floorplan with 1,924+/. Square feet of living space and an enviable Redwood Shores location just steps from the Bay Trail. Tall windows fill the home with natural light, while modern updates throughout create a fresh and sophisticated feel. The main level welcomes you with a light filled living room featuring soaring windows and sliding doors opening to a charming front patio. The second level is designed for easy everyday living, with a beautifully updated kitchen featuring an island with seating and pantry, flowing seamlessly into the dining and family rooms. Built in speakers add to the experience, while an updated half bath completes the level. Upstairs, 3 bedrooms include a spacious primary suite with a large walk in closet and private bath featuring Lutron electric shades. Two additional bedrooms share a full bath, and convenient laundry is located on this level. The attached 2 car ga

Spacious and inviting, this 5-bedroom, 3-bath Belmont home offers approximately 2,850 sq. Ft. of living space with a versatile floor plan designed for both everyday living and entertaining. A desirable main-level bedroom and full bath provide flexibility for guests, a home office or multigenerational living, while the upstairs primary suite features a generous walk-in closet. The well-appointed kitchen features granite countertops and opens to comfortable gathering spaces, including separate living and family rooms, each with its own fireplace. Beautiful flooring, abundant natural light and a dedicated dining area add warmth and character throughout the home. Outside, the private backyard is highlighted by a heated in-ground pool perfect for entertaining, relaxing and enjoying the Peninsulas beautiful weather. Additional features include a separate laundry/utility room, central heating and an attached two-car garage. Ideally located in Belmont and served by the highly regarded Belmont-

Welcome to the epitome of Atherton luxury! This beautiful 5BR/4.5BA estate was taken down to the studs in 2001 and lovingly reincarnated into the oasis that you see today. Situated on a private, flat, nearly half-acre lot, this home exudes modern luxury at every turn. Beautiful maple hardwood floors grace the downstairs living area. The stunning chef's kitchen is equipped with a Sub-Zero refrigerator, Wolf double oven, Viking gas cooktop, and has copious amounts of counter space and cabinetry for you to indulge your culinary creations. The layout of this home is perfect for entertaining guests or for just casual living. The living room features soaring ceilings and a cozy fireplace, while the separate family room is ideal for watching the games or catching the latest movie. Two of the four downstairs bedrooms are fully en-suite, and the beautifully appointed primary suite upstairs affords you the ultimate in luxury and privacy. The impeccably landscaped 1/2 acre yard features a private

Step inside to discover beautiful hardwood floors throughout, fresh interior and exterior paint, and a bright, inviting floor plan designed for comfortable everyday living and effortless entertaining. The spacious living and dining areas flow together seamlessly, with views out to the backyard creating a wonderful connection between indoor and outdoor living. The home features three generously sized bedrooms, including a private primary suite, offering plenty of space to relax and recharge. Out back, an expansive yard provides room to play, entertain, garden, or simply unwind. Enjoy sunny afternoons on the deck, gatherings with friends and family, and a large lawn area with endless possibilities. And the location is hard to beat. With Woodside Plazas restaurants, shops, and everyday conveniences just a short stroll away, you can enjoy the charm of a peaceful residential neighborhood with exceptional walkability. Beautiful hardwood floors, spacious living areas, a fantastic backyard, an

Thoughtfully updated with timeless character, 710 7th Avenue offers comfortable single level living in Redwood Citys North Fair Oaks neighborhood. Hardwood floors and abundant natural light create a warm and inviting interior, while grand skylights brighten the open kitchen. The kitchen flows seamlessly into a spacious dining area ideal for gatherings and extends naturally to the backyard for easy indoor outdoor living. Two generously sized bedrooms are conveniently arranged on one level. Outside, the expansive backyard is a true highlight, featuring a large deck, lush mature plantings, colorful flowers, and a generous lawn with plenty of room to relax, dine, and entertain. A large extra deep detached two car garage provides excellent storage and dedicated workspace, complemented by plentiful off street parking. Ideally located near Marsh Manor Shopping Center, Downtown Redwood City, restaurants, cafes, schools, and major commuter routes for easy access throughout the Peninsula

Tucked into a quiet hillside pocket above Belmont, this 5-bedroom home offers something rare on the Peninsula: a commanding, expansive valley view paired with true small-town serenity and still just minutes from everything you need. Set near the top of the hill, this home feels secluded and peaceful, yet it's only 5 minutes to Carlmont Village Shopping Center and close to Waterdog Lake's hiking and biking trail system, Cipriani Park, and Belmont's dedicated dog park. Enjoy year-round evenings on the expansive deck overlooking the valley, or take advantage of flexible downstairs space that works as an entertainment room, game room, or space for hosting family and friends. With 5 bedrooms, there's room for a growing family, including two bedrooms ideal for conversion into home offices, perfect for today's remote-work lifestyle. The neighborhood is ultra-quiet and walkable, with tree-lined streets perfect for evening strolls. Zoned for top-rated Belmont schools: Central Elementary, Ralsto

Tucked away on a quiet cul-de-sac in Redwood City's charming Garden District, within the Centennial neighborhood, this inviting 3-bedroom, 1-bath home offers flexible living spaces, thoughtful updates, and an exceptionally spacious backyard. Fresh interior paint and new carpet create a bright, move-in-ready feel, multi-zone ductless mini-split heating and air conditioning for efficient year-round comfort. The adaptable floor plan allows the home to evolve with your needs, with one bedroom currently styled as a dining room and the enclosed garage offering valuable bonus space ideal for a home office, fitness area, playroom, or creative retreat. Additional improvements include newer washer and dryer, along with new doors throughout the home as well as a new front door. Outside, the generous backyard is surrounded by a beautifully manicured garden and fruit-bearing trees, creating a wonderful setting for entertaining, outdoor dining, gardening, play, or simply relaxing, with exciting poss

Welcome to 2719 Brewster Avenue, a charming Redwood City home where thoughtful updates, flexible bonus space, and an enchanting garden setting come together in one special property. Inside, warm hardwood floors, an updated kitchen and bath, and a dedicated dining room create a comfortable, inviting place to call home. Just beyond, an oversized detached two-car garage adds exceptional flexibility. Fully insulated and climate-controlled, with an epoxy floor, storage, and custom built-ins, it can serve as a home office, gym, studio, workshop, playroom, or hangout space, with potential for a future ADU. The spacious backyard feels like a world of its own, with a generous lawn for play and entertaining, climbing roses along the fences, and an inviting garden retreat with raised beds, strawberries, herbs, flowers, and a peach tree. The redesigned front yard adds curb appeal with drought-tolerant landscaping and handsome pavers along the driveway and entry. Located in Redwood City's Eagle Hil

Tucked away in Woodhill Estates on over a third of an acre, this beautifully updated home blends Tudor character with contemporary design across more than 3,300 square feet. A hedge-lined walkway leads to a single-level floorplan with wide plank hardwood floors, natural stone finishes, soaring ceilings, and abundant natural light. The living room and sunroom share a striking two-way fireplace, while the chef's kitchen features Wolf and Thermador appliances, a casual dining area, and temperature-controlled wine storage. All three bedrooms are en suite, highlighted by a luxurious primary suite with its own fireplace. The backyard offers a spacious patio, manicured lawn, and peaceful views. Additional highlights include air conditioning, a three-car garage, community tennis courts, and a prime location near Berkley Field, Cañada College Athletic Center, Stulsaft Park, and downtown amenities. Served by acclaimed Roy Cloud Elementary and Woodside High School (buyer to verify eligibility)

Built in 2021, this stylish San Mateo residence delivers the rare combination of newer construction, modern design, generous living space, and a private 2-car tandem garage. All in a convenient Peninsula location. This thoughtfully designed three-level home offers nearly 1,600 sq ft of bright, comfortable living with large windows and an open, airy feel. The main living level brings together the kitchen, dining, and living areas for effortless everyday living and entertaining, while a covered deck extends the space outdoors. Upstairs, two spacious bedrooms provide privacy and flexibility, including a generous primary suite with a walk-in closet and private bath. The second bedroom with its own en-suite bath is ideal for guests, a home office, or a private retreat. Contemporary finishes, energy-efficient features, smart-home technology, and an attached garage add to the ease of modern living. Enjoy a beautifully maintained community setting with convenient access to shopping, dining, ma

Welcome to 170 Sand Hill Circle, a beautifully situated 3-bedroom, 2-bath townhouse in the desirable Sharon Heights neighborhood. This sought-after end unit features a comfortable, thoughtfully designed floor plan with inviting living spaces, abundant natural light, and the added privacy of having only one shared side. Set in a peaceful location backing directly to Sharon Heights Golf & Country Club, the home enjoys tranquil views and a wonderful sense of privacy. Its convenient location offers easy access to Highway 280, creating an excellent home base for professionals commuting throughout the Peninsula or traveling north to San Francisco and south to San Jose. Stanford University and Stanford Shopping Center are also nearby, along with the renowned businesses, medical centers, and employment hubs of Silicon Valley. Enjoy convenient access to local shopping, dining, recreation, and Las Lomitas schools. Combining a quiet setting, spacious layout, beautiful surroundings, and outstandin

Welcome to this beautifully updated top-floor residence in the heart of Menlo Park, which offers an exceptional combination of style, comfort, and location. Located across from a beautiful neighborhood park and the Menlo Park Recreation Center, this light-filled home offers serene park views while being only moments from downtown. Thoughtfully updated throughout, the residence features new flooring, a spacious living room with a gas fireplace and custom built-ins, and an inviting dining area filled with natural light. The remodeled kitchen features stone countertops, a subway tile backsplash, and quality GE appliances. Two nicely sized bedrooms and beautifully renovated bathrooms with elegant finishes complete this luxury unit. In-unit laundry and two dedicated parking spaces (one covered and one uncovered), add everyday convenience. Just blocks from downtown Menlo Park and Caltrain, and close to Stanford University and downtown Palo Alto, this inviting residence offers an outstanding

A rare find just minutes from Palo Alto's vibrant downtown, this quality-constructed home seamlessly blends timeless elegance with modern convenience. Thoughtfully designed with sophisticated details throughout, the residence features crown molding, plantation shutters, and custom cabinetry. The main level showcases beautiful hickory hardwood floors and a living room centered around a fireplace with a marble surround. An open-concept dining room flows effortlessly into the spacious family room and chef's kitchen, outfitted with a generous center island and top-tier appliances Upstairs, two luxurious en-suite bedrooms offer peaceful retreats, highlighted by a primary suite with a vaulted ceiling and a spa-inspired bath. Outside, manicured, low-maintenance landscaping and a back patio complement a charming covered porch that extends your living space into the outdoors. Adding exceptional versatility, the detached 2 car garage features an upper-level studio complete with a full kitchen, b